diff --git a/GNUmakefile b/GNUmakefile
index 7845cfc..3f80746 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -4,8 +4,8 @@ AS= $(CONFIG_TARGET_CC)
 # NOTE(dinosaure): we must use [aarch64-none-elf-gcc] to compile assembly code
 # to be able to include some files and define some macros.
 LD= $(CONFIG_TARGET_LD)
-AR= aarch64-none-elf-ar # TODO
-OBJDUMP= aarch64-none-elf-objdump # TODO
+AR= aarch64-linux-gnu-ar # TODO
+OBJDUMP= aarch64-linux-gnu-objdump # TODO
 OBJCOPY= $(CONFIG_TARGET_OBJCOPY)
 
 export TOPDIR := $(abspath .)
@@ -37,7 +37,7 @@ CFLAGS += -std=c11 -ffreestanding -fstack-protector-strong -nostdlib \
 
 LDFLAGS += -nostdlib -static -Wl,--no-warn-rwx-segments \
 	-Wl,--section-start=.init=0x80000 -Wl,--build-id=none \
-	-Wl,--start-group -L . -lgilbraltar -L nolibc -lnolibc -L openlibm -lopenlibm -lgcc -Wl,--end-group
+	-Wl,--start-group -L lib/$(CONFIG_TARGET_TRIPLE) -lgilbraltar.rpi5 -L nolibc -lnolibc -L openlibm -lopenlibm -lgcc -Wl,--end-group
 
 SRCS= kernel.c timer.c led.c interrupt_handler.c exception_handler.c \
 	mbox.c clock.c crt.c serial.c log.c power.c tag.c coherent_page.c dtb.c \
@@ -50,6 +50,23 @@ ASMS:=$(addprefix kernel/,$(ASMS))
 
 OBJS= $(SRCS:c=o) $(ASMS:S=o)
 
+bin:
+	@test ! -d $@
+	@mkdir -p $@
+
+bin/$(CONFIG_TARGET_TRIPLE)-%: toolchain/%.in | bin
+	@echo "SUBST $@"
+	@sed -e 's!@@CONFIG_TARGET_ARCH@@!$(CONFIG_TARGET_ARCH)!g'             \
+	    -e 's!@@CONFIG_TARGET_TRIPLE@@!$(CONFIG_TARGET_TRIPLE)!g'          \
+	    -e 's!@@CONFIG_TARGET_CC@@!$(CONFIG_TARGET_CC)!g'                  \
+	    -e 's!@@CONFIG_TARGET_CC_CFLAGS@@!$(CONFIG_TARGET_CC_CFLAGS)!g'    \
+	    -e 's!@@CONFIG_TARGET_CC_LDFLAGS@@!$(CONFIG_TARGET_CC_LDFLAGS)!g'  \
+	    -e 's!@@CONFIG_TARGET_LD@@!$(CONFIG_TARGET_LD)!g'                  \
+	    -e 's!@@CONFIG_TARGET_LD_LDFLAGS@@!$(CONFIG_TARGET_LD_LDFLAGS)!g'  \
+	    -e 's!@@CONFIG_TARGET_OBJCOPY@@!$(CONFIG_TARGET_OBJCOPY)!g'        \
+	    $< >$@
+	@chmod +x $@
+
 %.o: %.S
 	@echo "AS $@"
 	@$(AS) $(AFLAGS) -c -o $@ $<
@@ -58,11 +75,18 @@ OBJS= $(SRCS:c=o) $(ASMS:S=o)
 	@echo "CC $@"
 	@$(CC) $(CFLAGS) -c -o $@ $<
 
-kernel/libgilbraltar.a: $(OBJS)
+lib/$(CONFIG_TARGET_TRIPLE):
+	@test ! -d $@
+	@mkdir -p $@
+
+lib/$(CONFIG_TARGET_TRIPLE)/libgilbraltar.rpi5.a: $(OBJS) | lib/$(CONFIG_TARGET_TRIPLE)
 	@echo "AR $@"
 	@rm -f $@
 	@$(AR) cr $@ $^
 
+lib/$(CONFIG_TARGET_TRIPLE)/libgilbraltar.stub.a: | lib/$(CONFIG_TARGET_TRIPLE)
+	@$(AR) cr $@
+
 .PHONY: phony-openlibm
 phony-openlibm: include/$(CONFIG_TARGET_TRIPLE)
 	@$(MAKE) -C openlibm \
@@ -79,11 +103,12 @@ ocaml:
 	fi
 
 ocaml/Makefile.config: | ocaml
-	PATH="$$PWD/$(TOOLDIR_FOR_BUILD):$$PATH" ;
+	PATH="$$PWD/bin/:$$PATH" ; \
 	cd ocaml && \
 		./configure \
-		--target="$(MAKECONF_TARGET_ARCH)-gilbraltar-ocaml" \
-		--prefix="$(MAKECONF_SYSROOT)" \
+		--host="$(CONFIG_HOST_ARCH)-unknown-none" \
+		--target="$(CONFIG_TARGET_TRIPLE)" \
+		--prefix="$(CONFIG_SYSROOT)" \
 		--disable-shared \
 		--disable-systhreads \
 		--disable-unix-lib \
@@ -91,7 +116,7 @@ ocaml/Makefile.config: | ocaml
 		--disable-debug-runtime \
 		--disable-ocamltest \
 		--disable-ocamldoc \
-		--disable-zstd \
+		--without-zstd \
 		$(MAKECONF_OCAML_CONFIGURE_OPTIONS)
 
 OCAML_IS_BUILT := _build/ocaml_is_built
@@ -111,13 +136,15 @@ phony-nolibc: include/$(CONFIG_TARGET_TRIPLE)
 nolibc/libnolibc.a: phony-nolibc
 
 .PHONY: all
-all: kernel/libgilbraltar.a
+all: kernel/libgilbraltar.rpi5.a
 
 .PHONY: clean
 clean:
 	$(RM) -f kernel/*.o kernel/*.a *.elf *.bin *.img *.map
-	$(RM) -rf include/$(CONFIG_TARGET_TRIPLE)
+	$(RM) -rf include/$(CONFIG_TARGET_TRIPLE)/
 	$(RM) -rf _build
+	$(RM) -rf bin/
+	$(RM) -rf lib/$(CONFIG_TARGET_TRIPLE)/
 	if [ -d ocaml ] ; then $(MAKE) -C ocaml clean ; fi
 	$(RM) -f test/*.o
 	$(MAKE) -C openlibm clean
@@ -132,7 +159,7 @@ test/%.o: test/%.c
 	@echo "CC $@"
 	@$(CC) $(CFLAGS) -c -o $@ $<
 
-kernel_2712.img: kernel/libgilbraltar.a nolibc/libnolibc.a openlibm/libopenlibm.a test/test.o
+kernel_2712.img: lib/$(CONFIG_TARGET_TRIPLE)/libgilbraltar.rpi5.a nolibc/libnolibc.a openlibm/libopenlibm.a test/test.o
 	@echo "LD ${@:img=elf}"
-	@$(LD) test/test.o -o ${@:img=elf} $(LDFLAGS) -Wl,-Map ${@:img=map} -Wl,-T gilbraltar.ld
+	@$(LD) test/test.o -o ${@:img=elf} $(LDFLAGS) -Wl,-Map ${@:img=map} -Wl,-T gilbraltar.rpi5.ld
 	@$(OBJCOPY) ${@:img=elf} -O binary $@
diff --git a/configure.sh b/configure.sh
index 0f6a0eb..2a9423f 100755
--- a/configure.sh
+++ b/configure.sh
@@ -18,9 +18,9 @@
 # NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 # CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-TARGET_CC="${TARGET_CC:-aarch64-none-elf-gcc}"
-TARGET_LD="${TARGET_LD:-aarch64-none-elf-gcc}"
-TARGET_OBJCOPY="${TARGET_OBJCOPY:-aarch64-none-elf-objcopy}"
+TARGET_CC="${TARGET_CC:-aarch64-linux-gnu-gcc}"
+TARGET_LD="${TARGET_LD:-aarch64-linux-gnu-gcc}"
+TARGET_OBJCOPY="${TARGET_OBJCOPY:-aarch64-linux-gnu-objcopy}"
 
 prog_NAME="$(basename $0)"
 
@@ -424,7 +424,7 @@ fi
 echo "${prog_NAME}: Using ${TARGET_LD} for target linker"
 echo "${prog_NAME}: Using ${TARGET_OBJCOPY} for target objcopy"
 
-TARGET_TRIPLE="${TARGET_ARCH}-gilbraltar-none-static"
+TARGET_TRIPLE="${TARGET_ARCH}-gilbraltar-none"
 echo "${prog_NAME}: Target toolchain triple is ${TARGET_TRIPLE}"
 
 #
diff --git a/gilbraltar.ld b/gilbraltar.rpi5.ld
similarity index 100%
rename from gilbraltar.ld
rename to gilbraltar.rpi5.ld
diff --git a/gilbraltar.stub.ld b/gilbraltar.stub.ld
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/gilbraltar.stub.ld
@@ -0,0 +1 @@
+
diff --git a/libgilbraltar.a b/libgilbraltar.a
deleted file mode 100644
index 2ef3e95..0000000
Binary files a/libgilbraltar.a and /dev/null differ
diff --git a/patches/5.2.1/0001-Fix-two-small-issues-with-preprocessor-directives-13.patch b/patches/5.2.1/0001-Fix-two-small-issues-with-preprocessor-directives-13.patch
new file mode 100644
index 0000000..6895757
--- /dev/null
+++ b/patches/5.2.1/0001-Fix-two-small-issues-with-preprocessor-directives-13.patch
@@ -0,0 +1,49 @@
+From 189d0adbdcbc480fe3c9c79abf4b3f1df584e0c1 Mon Sep 17 00:00:00 2001
+From: shym <samuel@tarides.com>
+Date: Thu, 4 Jul 2024 18:01:17 +0200
+Subject: [PATCH 01/14] Fix two small issues with preprocessor directives
+ (#13281)
+
+* Add missing `defined` in preprocessor test
+
+When `HAS_CLOCK_GETTIME_NSEC_NP` is not defined,
+`#elif HAS_CLOCK_GETTIME_NSEC_NP` triggers a warning
+
+* Include `caml/config.h` before `HAS_GETTIMEOFDAY` is tested
+
+Also remove a duplicate `errno.h`
+---
+ runtime/unix.c | 5 ++---
+ 1 file changed, 2 insertions(+), 3 deletions(-)
+
+diff --git a/runtime/unix.c b/runtime/unix.c
+index b5fd4de17b..c0677e09ac 100644
+--- a/runtime/unix.c
++++ b/runtime/unix.c
+@@ -27,13 +27,12 @@
+ #include <errno.h>
+ #include <sys/ioctl.h>
+ #include <sys/types.h>
++#include "caml/config.h"
+ #ifdef HAS_GETTIMEOFDAY
+ #include <sys/time.h>
+ #endif
+ #include <sys/stat.h>
+ #include <fcntl.h>
+-#include <errno.h>
+-#include "caml/config.h"
+ #if defined(SUPPORT_DYNAMIC_LINKING) && !defined(BUILDING_LIBCAMLRUNS)
+ #define WITH_DYNAMIC_LINKING
+ #ifdef __CYGWIN__
+@@ -47,7 +46,7 @@
+ #endif
+ #ifdef HAS_POSIX_MONOTONIC_CLOCK
+ #include <time.h>
+-#elif HAS_CLOCK_GETTIME_NSEC_NP
++#elif defined(HAS_CLOCK_GETTIME_NSEC_NP)
+ #include <time.h>
+ #endif
+ #ifdef HAS_DIRENT
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0002-Detect-and-use-CC-.-_FOR_BUILD-to-build-sak.patch b/patches/5.2.1/0002-Detect-and-use-CC-.-_FOR_BUILD-to-build-sak.patch
new file mode 100644
index 0000000..91ede64
--- /dev/null
+++ b/patches/5.2.1/0002-Detect-and-use-CC-.-_FOR_BUILD-to-build-sak.patch
@@ -0,0 +1,311 @@
+From acd2f9c4ae0ee5dd550796b547e781794eb9b58c Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Wed, 21 Feb 2024 18:47:12 +0100
+Subject: [PATCH 02/14] Detect and use {CC,...}_FOR_BUILD to build sak
+
+---
+ Makefile                          |   9 +-
+ Makefile.config.in                |   4 +
+ aclocal.m4                        |   1 +
+ build-aux/ax_prog_cc_for_build.m4 | 155 ++++++++++++++++++++++++++++++
+ configure                         | Bin 647326 -> 682393 bytes
+ configure.ac                      |  10 +-
+ 6 files changed, 172 insertions(+), 7 deletions(-)
+ create mode 100644 build-aux/ax_prog_cc_for_build.m4
+
+diff --git a/Makefile b/Makefile
+index 71d41cd2d6..df191af79c 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1284,11 +1284,10 @@ runtime/caml/jumptbl.h : runtime/caml/instruct.h
+ 	sed -n -e '/^  /s/ \([A-Z]\)/ \&\&lbl_\1/gp' \
+ 	       -e '/^}/q' > $@
+ 
+-# These are provided as a temporary shim to allow cross-compilation systems
+-# to supply a host C compiler and different flags and a linking macro.
+-SAK_CC ?= $(CC)
+-SAK_CFLAGS ?= $(OC_CFLAGS) $(CFLAGS) $(OC_CPPFLAGS) $(CPPFLAGS)
+-SAK_LINK ?= $(MKEXE_VIA_CC)
++SAK_CC ?= $(CC_FOR_BUILD)
++SAK_CFLAGS ?=\
++  $(OC_CFLAGS) $(CFLAGS_FOR_BUILD) $(OC_CPPFLAGS) $(CPPFLAGS_FOR_BUILD)
++SAK_LINK ?= $(SAK_CC) $(SAK_CFLAGS) $(OC_EXE_LDFLAGS) $(OUTPUTEXE)$(1) $(2)
+ 
+ $(SAK): runtime/sak.$(O)
+ 	$(V_MKEXE)$(call SAK_LINK,$@,$^)
+diff --git a/Makefile.config.in b/Makefile.config.in
+index 559738f6ed..4243bebad9 100644
+--- a/Makefile.config.in
++++ b/Makefile.config.in
+@@ -65,11 +65,13 @@ LIBTOOL = $(TOP_BUILDDIR)/libtool
+ ### Which C compiler to use
+ TOOLPREF=@ac_tool_prefix@
+ CC=@CC@
++CC_FOR_BUILD=@CC_FOR_BUILD@
+ 
+ CC_HAS_DEBUG_PREFIX_MAP=@cc_has_debug_prefix_map@
+ AS_HAS_DEBUG_PREFIX_MAP=@as_has_debug_prefix_map@
+ 
+ LDFLAGS?=@LDFLAGS@
++LDFLAGS_FOR_BUILD=@LDFLAGS_FOR_BUILD@
+ 
+ ### How to invoke the C preprocessor through the C compiler
+ CPP=@CPP@
+@@ -160,7 +162,9 @@ UNIX_OR_WIN32=@unix_or_win32@
+ INSTALL_SOURCE_ARTIFACTS=@install_source_artifacts@
+ 
+ CFLAGS=@CFLAGS@
++CFLAGS_FOR_BUILD=@CFLAGS_FOR_BUILD@
+ CPPFLAGS=@CPPFLAGS@
++CPPFLAGS_FOR_BUILD=@CPPFLAGS_FOR_BUILD@
+ OCAMLC_CFLAGS=@ocamlc_cflags@
+ 
+ OCAMLC_CPPFLAGS=@ocamlc_cppflags@
+diff --git a/aclocal.m4 b/aclocal.m4
+index cb73385dda..d2e58a45f6 100644
+--- a/aclocal.m4
++++ b/aclocal.m4
+@@ -30,6 +30,7 @@ m4_include([build-aux/ax_check_compile_flag.m4])
+ 
+ # Macros from the autoconf macro archive
+ m4_include([build-aux/ax_func_which_gethostbyname_r.m4])
++m4_include([build-aux/ax_prog_cc_for_build.m4])
+ m4_include([build-aux/ax_pthread.m4])
+ 
+ # OCaml version
+diff --git a/build-aux/ax_prog_cc_for_build.m4 b/build-aux/ax_prog_cc_for_build.m4
+new file mode 100644
+index 0000000000..1db8d73f96
+--- /dev/null
++++ b/build-aux/ax_prog_cc_for_build.m4
+@@ -0,0 +1,155 @@
++# ===========================================================================
++#   https://www.gnu.org/software/autoconf-archive/ax_prog_cc_for_build.html
++# ===========================================================================
++#
++# SYNOPSIS
++#
++#   AX_PROG_CC_FOR_BUILD
++#
++# DESCRIPTION
++#
++#   This macro searches for a C compiler that generates native executables,
++#   that is a C compiler that surely is not a cross-compiler. This can be
++#   useful if you have to generate source code at compile-time like for
++#   example GCC does.
++#
++#   The macro sets the CC_FOR_BUILD and CPP_FOR_BUILD macros to anything
++#   needed to compile or link (CC_FOR_BUILD) and preprocess (CPP_FOR_BUILD).
++#   The value of these variables can be overridden by the user by specifying
++#   a compiler with an environment variable (like you do for standard CC).
++#
++#   It also sets BUILD_EXEEXT and BUILD_OBJEXT to the executable and object
++#   file extensions for the build platform, and GCC_FOR_BUILD to `yes' if
++#   the compiler we found is GCC. All these variables but GCC_FOR_BUILD are
++#   substituted in the Makefile.
++#
++# LICENSE
++#
++#   Copyright (c) 2008 Paolo Bonzini <bonzini@gnu.org>
++#
++#   Copying and distribution of this file, with or without modification, are
++#   permitted in any medium without royalty provided the copyright notice
++#   and this notice are preserved. This file is offered as-is, without any
++#   warranty.
++
++#serial 21
++
++AU_ALIAS([AC_PROG_CC_FOR_BUILD], [AX_PROG_CC_FOR_BUILD])
++AC_DEFUN([AX_PROG_CC_FOR_BUILD], [dnl
++AC_REQUIRE([AC_PROG_CC])dnl
++AC_REQUIRE([AC_PROG_CPP])dnl
++AC_REQUIRE([AC_CANONICAL_BUILD])dnl
++
++dnl Use the standard macros, but make them use other variable names
++dnl
++pushdef([ac_cv_prog_CPP], ac_cv_build_prog_CPP)dnl
++pushdef([ac_cv_prog_cc_c89], ac_cv_build_prog_cc_c89)dnl
++pushdef([ac_cv_prog_cc_c99], ac_cv_build_prog_cc_c99)dnl
++pushdef([ac_cv_prog_cc_c11], ac_cv_build_prog_cc_c11)dnl
++pushdef([ac_cv_prog_gcc], ac_cv_build_prog_gcc)dnl
++pushdef([ac_cv_prog_cc_works], ac_cv_build_prog_cc_works)dnl
++pushdef([ac_cv_prog_cc_cross], ac_cv_build_prog_cc_cross)dnl
++pushdef([ac_cv_prog_cc_g], ac_cv_build_prog_cc_g)dnl
++pushdef([ac_cv_c_compiler_gnu], ac_cv_build_c_compiler_gnu)dnl
++pushdef([ac_cv_exeext], ac_cv_build_exeext)dnl
++pushdef([ac_cv_objext], ac_cv_build_objext)dnl
++pushdef([ac_exeext], ac_build_exeext)dnl
++pushdef([ac_objext], ac_build_objext)dnl
++pushdef([CC], CC_FOR_BUILD)dnl
++pushdef([CPP], CPP_FOR_BUILD)dnl
++pushdef([GCC], GCC_FOR_BUILD)dnl
++pushdef([CFLAGS], CFLAGS_FOR_BUILD)dnl
++pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl
++pushdef([EXEEXT], BUILD_EXEEXT)dnl
++pushdef([LDFLAGS], LDFLAGS_FOR_BUILD)dnl
++pushdef([OBJEXT], BUILD_OBJEXT)dnl
++pushdef([host], build)dnl
++pushdef([host_alias], build_alias)dnl
++pushdef([host_cpu], build_cpu)dnl
++pushdef([host_vendor], build_vendor)dnl
++pushdef([host_os], build_os)dnl
++pushdef([ac_cv_host], ac_cv_build)dnl
++pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl
++pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl
++pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl
++pushdef([ac_cv_host_os], ac_cv_build_os)dnl
++pushdef([ac_tool_prefix], ac_build_tool_prefix)dnl
++pushdef([am_cv_CC_dependencies_compiler_type], am_cv_build_CC_dependencies_compiler_type)dnl
++pushdef([am_cv_prog_cc_c_o], am_cv_build_prog_cc_c_o)dnl
++pushdef([cross_compiling], cross_compiling_build)dnl
++
++cross_compiling_build=no
++
++ac_build_tool_prefix=
++AS_IF([test -n "$build"],      [ac_build_tool_prefix="$build-"],
++      [test -n "$build_alias"],[ac_build_tool_prefix="$build_alias-"])
++
++AC_LANG_PUSH([C])
++
++dnl The pushdef([ac_cv_c_compiler_gnu], ...) currently does not cover
++dnl the use of this variable in _AC_LANG_COMPILER_GNU called by
++dnl AC_PROG_CC. Unset this cache variable temporarily as a workaround.
++was_set_c_compiler_gnu=${[ac_cv_c_compiler_gnu]+y}
++AS_IF([test ${was_set_c_compiler_gnu}],
++    [saved_c_compiler_gnu=$[ac_cv_c_compiler_gnu]
++    AS_UNSET([[ac_cv_c_compiler_gnu]])])
++
++AC_PROG_CC
++
++dnl Restore ac_cv_c_compiler_gnu
++AS_IF([test ${was_set_c_compiler_gnu}],
++  [[ac_cv_c_compiler_gnu]=$[saved_c_compiler_gnu]])
++
++_AC_COMPILER_EXEEXT
++_AC_COMPILER_OBJEXT
++AC_PROG_CPP
++
++dnl Restore the old definitions
++dnl
++popdef([cross_compiling])dnl
++popdef([am_cv_prog_cc_c_o])dnl
++popdef([am_cv_CC_dependencies_compiler_type])dnl
++popdef([ac_tool_prefix])dnl
++popdef([ac_cv_host_os])dnl
++popdef([ac_cv_host_vendor])dnl
++popdef([ac_cv_host_cpu])dnl
++popdef([ac_cv_host_alias])dnl
++popdef([ac_cv_host])dnl
++popdef([host_os])dnl
++popdef([host_vendor])dnl
++popdef([host_cpu])dnl
++popdef([host_alias])dnl
++popdef([host])dnl
++popdef([OBJEXT])dnl
++popdef([LDFLAGS])dnl
++popdef([EXEEXT])dnl
++popdef([CPPFLAGS])dnl
++popdef([CFLAGS])dnl
++popdef([GCC])dnl
++popdef([CPP])dnl
++popdef([CC])dnl
++popdef([ac_objext])dnl
++popdef([ac_exeext])dnl
++popdef([ac_cv_objext])dnl
++popdef([ac_cv_exeext])dnl
++popdef([ac_cv_c_compiler_gnu])dnl
++popdef([ac_cv_prog_cc_g])dnl
++popdef([ac_cv_prog_cc_cross])dnl
++popdef([ac_cv_prog_cc_works])dnl
++popdef([ac_cv_prog_cc_c89])dnl
++popdef([ac_cv_prog_gcc])dnl
++popdef([ac_cv_prog_CPP])dnl
++
++dnl restore global variables ac_ext, ac_cpp, ac_compile,
++dnl ac_link, ac_compiler_gnu (dependant on the current
++dnl language after popping):
++AC_LANG_POP([C])
++
++dnl Finally, set Makefile variables
++dnl
++AC_SUBST(BUILD_EXEEXT)dnl
++AC_SUBST(BUILD_OBJEXT)dnl
++AC_SUBST([CFLAGS_FOR_BUILD])dnl
++AC_SUBST([CPPFLAGS_FOR_BUILD])dnl
++AC_SUBST([LDFLAGS_FOR_BUILD])dnl
++])
+diff --git a/configure b/configure
+index 49d5bff6495b2f38d91d97ec777a4212e3c23677..9f16ca87352a88b5e995631c15fd8914f6b2ebfc 100755
+GIT binary patch
+delta 6754
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+z!|S)m;Q!@XF6Pa&<JcUzY{p^{Hki(y0rhCJx5zLKy=bu-@x5<jG>UofuV%kt{}1NX
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+zbY#2$-Xf|kzdS~q_`^cDyHdY|p63JM*t@=!)dzo41O;xLvF!OiIoFWGYe~&2XjEm&
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+z(^4MM)h1%|U*Y7)AZN`mO~RRV)@+=ygLSFCoJSOKw3OIJZgAD;{u)<1vOPH$Px+Fw
+z@VE%&Su7_N&Zpwsb*^6F#HW9gY}Xt@XeHF>cn%N!t8_jJ>m2Z6x^Y{0<|AtkcJ8xs
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+z_y$Y&mB2<5U5Ha9@R$b7of3FbYkHhexJ2JRKRkBZhoesLvGbcMVVlOkrW8DJ6m9s1
+z3$nD4@07v@cG9P=I7aW6!fRPZg#8s2IN^r3GtJ$YwV$xi53Gg)CWJO5I1N5QiwG1c
+zIJO#G+HNkdh9P!0`^$`wP}%^=wX!%Qt~K*OGPDMcvGN#5B-cWaoOUe;Ns${~)3*Ay
+z8z!{o%jHn2THKrE_pbJP<#Dw$*BaFxU29aE(uMfR+PEd;R>akQx?&!+sU>9Kx0?u$
+zmnxup0RWCyE(E}bl?wv!mB-@%eD-)8fD2D(0Bly%Q0iCw>(;CFA)!xpF9}Hv>k5tL
+zP*@emWqTEDeB=r=o7KBxti#X(O)Pr4hZ>Ahamn{M)LM*5lKj5mk!{JHIFbSB__vvq
+z>geu|$+WdtU05wL(dR~f=#)1wmSU>cvB3hG$Hl=ka79Ngu#MQ+xw5wmhUDpL=|LHb
+zewqZkEx9aTtTds@^{2o(^}<9?q`)1E)~0J5)!t9cN{9N?xCG2BfFku?9ZZL6wNNOj
+z+t&+=D(!KowcF@;I#hy|kVoe-VOW#>i}!BsA$VmO<i)b}yUU<7*0yJZ5Np?E!_{PE
+z6HYgdJ!`E&zYTWbd0H98vo^?x@f}JB0Y9`srsf4wm&1CzJpt?RGpB{aL(8FciK<Je
+z<=H?F&b?x(i3%&=FQ94uNiO_~XzEfHY&yZ&@O(aO(gdazz)DqpcL5ZxW@JTl^%dEX
+znEGlR8{KEgibw9=XsFapaaZ@~PoEO5sgc}XIqP7H_Ik<6(CtagRoGeh)oCtosfxB*
+zRBOb#AJD+>=hNJ#a(!ii*36A*j^L^nO<hsTCGM4^euK0|8rZQ5D&Z(~kZhmf>S(pS
+z#>QA6$y~emm{}-w19A-89*ndKc(N$Ty@Xi+<(l78rlY|Zt(oOgIrgpCbd76y<g6%1
+gJqnZ0r0y3lK54m3_+z})O8;c~r$l*c>Pu7q0nJy5)&Kwi
+
+delta 62
+zcmbPvS##b&^$i_<&20YdZ2pWu%ml>DK+Lk8&7U=4`}CCy*!ib_XJZp-XX|GJVs;?r
+L*v{6^Ir$a<qSX}Z
+
+diff --git a/configure.ac b/configure.ac
+index dff57a2782..2e3a11f60c 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -784,8 +784,14 @@ dnl nefarious single quotes which may appear in any of the strings.
+ 
+ AS_IF(
+   [test x"$host" = x"$target"],
+-    [cross_compiler=false],
+-    [cross_compiler=true])
++    [cross_compiler=false
++    CC_FOR_BUILD='$(CC)'
++    CFLAGS_FOR_BUILD='$(CFLAGS)'
++    CPPFLAGS_FOR_BUILD='$(CPPFLAGS)'
++    LDFLAGS_FOR_BUILD='$(LDFLAGS)'],
++    [cross_compiler=true
++    AC_MSG_NOTICE([detecting the C toolchain for build])
++    AX_PROG_CC_FOR_BUILD])
+ 
+ # Checks for programs
+ 
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0003-Use-target-instead-of-host-to-detect-the-C-toolchain.patch b/patches/5.2.1/0003-Use-target-instead-of-host-to-detect-the-C-toolchain.patch
new file mode 100644
index 0000000..94a1301
--- /dev/null
+++ b/patches/5.2.1/0003-Use-target-instead-of-host-to-detect-the-C-toolchain.patch
@@ -0,0 +1,112 @@
+From 204dd050b9d50013eeb4137dc84e7cb678a7315a Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Thu, 22 Feb 2024 13:37:28 +0100
+Subject: [PATCH 03/14] Use `target` instead of `host` to detect the C
+ toolchain
+
+When building a cross-compiler, the runtime will run on the target, not
+the host so:
+- set `cross_compiling` by comparing `build` to `target` (rather than to
+  `host`), as this variable will be used later
+- use `target` to set up the tool prefix,
+- as the libtool configuration will configure a `build` to `host`
+  toolchain, temporarily assign `host*` values to `target*` values
+---
+ configure    | Bin 682393 -> 682949 bytes
+ configure.ac |  18 ++++++++++++++++++
+ 2 files changed, 18 insertions(+)
+
+diff --git a/configure b/configure
+index 9f16ca87352a88b5e995631c15fd8914f6b2ebfc..f81f4ca213b710395b61b64d1380318d4d80867d 100755
+GIT binary patch
+delta 1998
+zcmZ`(drVbz9N+yt?u9D~^12Qaj&QXR!UV#QN5pXGe6e(h`QUQ6_W&nu=Unc&0<{Wr
+zD<>GO8vK+s2i9!ONBq(FHF{hNafq|VoH5JU!?YZcjAl&@>UX)nUodan?QEa>`F_s#
+z{XIu7rw)#$?*GVC)z(thsCd1qOOc#j-7p+Z{W*{7R<&A5)?AY8bog}L?eKV&8nsz!
+zl)b84?N$uQP&KC_`RWv@L<%UJb+W2Ss$or$_8E$caZ;_KDPGyfRI;~L@kvgd1!<~N
+zG^u)@>UPb9kerEusLU3Ks(7txjpS1dpVXXepHY#uX0tt(X$v*os<;hBvde};(>>O=
+zdymC~8kGz+TUI=jXQ4e9(jmK5*+{q6sB}-8>Ch7ioYsxGab`&J;7ijZcm~ph0aI~I
+z5R;zYOxrmuo&>9j|1VP}X|$OmN!hr`N;5`Hp1Ap?(RA&&X)65x1(f-^xhyQ0)1w(=
+zxdl8<ug3vU8r0JpyFq&d$G$pHvUnapPrU#VdG18+1nar%WG86gZzmDp!<=S#HyJ(?
+zzK~A81F|4zS7)P4>gomu7I0!t;ZJwKOzJrW(hzrdtQTD3?x@xW)&S1G|1oF}<2d&V
+z0MXK5amo3CP0_59<dg#w47PdOAXv`Jd$`T??-B5ciF@k54Ag}|9HKk*BPfUpu~9av
+zQEMpOFa;Fh_3AW;5%|tOpqJ-Oj)%ehJn)KecrA@%lmpX*JZla7fVYWWFNRBa`GnzI
+znz;_%7Cl(D1t!gx`QR?7i{|^^gNdZVk7LPM4J;wuJs^XASP8R3OCW(Ir1dK7n9p{|
+z2g^cjG_wVEhSG$MHiwqC!goV$l-cSddHF2EAyIzo33!yB2VL0@WBGd1!U0&G!kgZ4
+z3vS@>hg<Ljhj~Tl8B$?JHgb9bMv!~=-~t-;D_ko2@aA1uL3W--akOg;-ska1`=8K8
+z&y2$wzJA0u2{+C<-$Tz%!mq>(n2Y;C8)fgU;wM8tvmlQcC0q52Vq>Rs&=oWH^-Tei
+z`Kx(_XiAjJlFp9jyr&%H3jX8{)RMsY^aj)_T=pC2JFx&qUPN8uP;w5SB5^=Xub~m4
+z+4KhLS|s8Yp(#LbcB9|LJ!^jSSl{QUUPNX8RSQ>tdmi<O*1bH8HU(+Ipq)+(qdZAu
+zH--vCcJ6U>L-^Wu2knhm89Y%(qoTQV@9d>Y>^JvXM;@S`#FF%xv6}}Qi^R#~c?*uD
+zJ1qDuQ4?c-;Zewy#rQ5y<Wls1G^MdPTqHFRk6(%An)RtTofk!$R^f6!9r|?^w((n{
+zw~O$E&|E9Q#lnwNid_O9+<>3tm<(;iJEM4=x*@sTt_(vb-*3Sw#J&~(LDy}@uZwgq
+zmf<Agf0h*lw&L@mRg4`H5j(fzbAsPnj(4T-%=?@1kQnf*FX6mJF|#4nz{jsz(G603
+z7{}6|+i+Dj?;!j5*l496mx}d{tg^<DPY3W-?)S(!+|6wV^DkibnAu}tPZ-U=5MJ5+
+EFU!5?HUIzs
+
+delta 1507
+zcmZuxe@s<%6yN=x^M&{B<N17mL|VPOr^~$_VH+Zdi6et$Wm?+{5|jjALO7ptL0E1;
+zOIA*^<p$s0n>ARQznZR9_EoeIZ=!5!znGe4&ZHKV1x};-!_~d#i~n4@+jl$nbAEl!
+z`JVF~ycmiPhdMsdUfdzOcWRvl`E@a~sXAur^)DGsQM1Wt4bGW_g2rMa*xFLRab2v%
+z4C+mF(TzrtZWxwYK7Udx$q?Tswdvw&C6w7xo@n?(OBeV4qXlH-TW$Lchgw={pY8z3
+zM_N9^_k$hxW)@pmM$)|1Y*!jd$$GZb@9>kmx3UNBLz}7iY7Z+#o3zm0VVi9iG5#*A
+z6uEI`h=%vrEa{E2t4OgdMFL2AtCxN3aYp^}5X&LMPd{SkIN5z8*#btAw~y^|k<^o9
+zfF3(}aFJp6Ma-+wv*gezc2Al!<c48(TqCcX^Q_+MR0l`cqtl(>Z@1V!XQyP~UzV?l
+z!W!Lsq!!#N<Yo;%Bue5z9Xcq>2Rd8{i_x`uhTO9NW+}T91#rMa>X(;7HkBhRsj#~Y
+zQsiJMjHtQ}Jp+L$3}2{%7*Jk$u^M`(@Zt^7H3giz1y(q~`4V4+r~}NC6FXr46fi7c
+zkxztwb@{}lYDkyc_rgI{N#TBoXHX><jzgxKq_L9_nQdG9MfoTc*_h}ag}q{Dm*$bn
+zet`s#R!-c23Z~G?F=$4W;fGsLeAlN+cHD+9m<nc@FB1p<g7=lns=r~5pAx?2#!X>r
+ziHP^IxiXZG3FRX%6yWI;758v4M#$W?1n+1RLs(><6$O{kC$9Blnrth<{uyNRSUDD|
+z3fn8NeI`YaJ`>y2?CoyG@6;VNwqZg|rhgkQQBxgx1HV?<@Y|S}_P?o$d$1)ysrve{
+zi&6<odPrOwzznf?6m#}{Hh`&QksQKa+7eNB7M~*M=viE2P+Mf^cg$6+s>X0ck$(Ip
+zu1*Wu8&SO_YCRZ@lZ#<J7xq`X){GkViptY>@Vc&Achtpe)Lez!{FqCDmY6Nw>3mT0
+zQM8z8Y*?3T#)7(7*~w>$M;f_LxH9?Y#Ohoo|5*_@mc`wZS8zU?o9U!p9_A0LZEw%z
+z5p^x{r}^CDCH0>re4Hl3CnrjIK2v0hp5UugdGRNCvD%d@PxA_LS-6}ZR>~VI_-)li
+zOA1JQjvtuZk`oc$rxsOqmh+Xf$?@_le2C`FFORhIoM|f8_?x^nPZhpZ1FzgRz{}A7
+u&lW!p@=K}(wVRsnJ~JiB)J%E(6z`yWe|`NKZk-hCq*})%*Pn5(>G=<2b2Q8V
+
+diff --git a/configure.ac b/configure.ac
+index 2e3a11f60c..0862b381ff 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -288,6 +288,14 @@ AC_CANONICAL_BUILD
+ AC_CANONICAL_HOST
+ AC_CANONICAL_TARGET
+ 
++# Override cross_compiling and ac_tool_prefix variables since the C toolchain is
++# used to generate target code when building a cross compiler
++AS_IF([test x"$build" = x"$target"],
++  [cross_compiling=no],
++  [cross_compiling=yes])
++AS_IF([test -n "$target_alias"],
++  [ac_tool_prefix=$target_alias-])
++
+ # Ensure that AC_CONFIG_LINKS will either create symlinks which are compatible
+ # with native Windows (i.e. NTFS symlinks, not WSL or Cygwin-emulated ones) or
+ # use its fallback mechanisms. Native Windows versions of ocamlc/ocamlopt cannot
+@@ -594,12 +602,22 @@ AC_CHECK_TOOLS([LD],[ld link])
+ # Also, it has been observed that, on some platforms (e.g. msvc) LT_INIT
+ # alters the CFLAGS variable, so we save its value before calling the macro
+ # and restore it after the call
++pushdef([host], target)dnl
++pushdef([host_alias], target_alias)dnl
++pushdef([host_cpu], target_cpu)dnl
++pushdef([host_vendor], target_vendor)dnl
++pushdef([host_os], target_os)dnl
+ old_host_os=$host_os
+ AS_IF([test x"$host_os" = "xwindows"],[host_os=mingw])
+ saved_CFLAGS="$CFLAGS"
+ LT_INIT
+ CFLAGS="$saved_CFLAGS"
+ host_os=$old_host_os
++popdef([host_os])dnl
++popdef([host_vendor])dnl
++popdef([host_cpu])dnl
++popdef([host_alias])dnl
++popdef([host])dnl
+ 
+ AS_CASE([$host],
+   [sparc-sun-solaris*],
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0004-Use-target-instead-of-host-when-relevant-in-configur.patch b/patches/5.2.1/0004-Use-target-instead-of-host-when-relevant-in-configur.patch
new file mode 100644
index 0000000..4ab437d
--- /dev/null
+++ b/patches/5.2.1/0004-Use-target-instead-of-host-when-relevant-in-configur.patch
@@ -0,0 +1,83 @@
+From 7acd97746d8c41a191d5de96b03c915a52bdc142 Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Wed, 21 Feb 2024 19:05:44 +0100
+Subject: [PATCH 04/14] Use `target` instead of `host` when relevant in
+ configuration
+
+---
+ configure    | Bin 682949 -> 682314 bytes
+ configure.ac |  10 +++++-----
+ 2 files changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/configure b/configure
+index f81f4ca213b710395b61b64d1380318d4d80867d..b393e6e2871a942e0171f1a52b70f75ef74f780a 100755
+GIT binary patch
+delta 382
+zcmX?lUGvl>&4w+Esyn8O?`5>&ElDg&Pc4a0%*jkF)}0=(m(dngX#2w*j4@28V$(0M
+zFi)HQa5v-Y=?MmGT+?stVdP~=$<Irj{%#MW)bze%Osaee3W>?_$tCeVF19K@F4I5U
+zVH4S|wwG}+i@bsYNDL;+rJ#_SQ=AH<z~V|u?J|cMftU%1nSq!Eh*`JG9A>lQVFkN&
+zd+d3(9Zb`AtYPEdu5^hlt_dpK9K!A)Jbhvrvm8H)pK?;B8!l!t#SnCS!Z>65{|xr~
+zjHsTQ{82+<`h?qz72E5w*?AbJD}82^n9fto&NY2~4m&5<bJMrwu**-sypuzI`==cC
+lc9!X9irD2v;oflZ403f20r?#0n-@jwK+LiIMG@!S9{?!sjgSBU
+
+delta 381
+zcmX?gN%QD+&4w+Esyn7TJYqDNF0+@BW4qyXCI!arVLKW3Fi!t`mUYSWt-BdtPv5V}
+z#xs4@9!B2j$BUW7r=Q%z$ithM9G_eg@8e>t;^V@#oqI3i7MAJ%DwqU?d|Z?iY!xc3
+z6-qKv^SBg%VETPAHnr*ftC>otpS{Z3$pg{^)82mXAR`bn0WmWWvj8#c_In4}?0BaC
+zv|{Jou6>Se9n<t*+u3=iIdigZe|v!~vT1tx4OZUmp~38S!XT%sPEW|?&|}I;nO^vu
+z(R6x$1G4~#Gw~whjO}yM+3zz7R0C}*$<NP;FDOb)%dDuK{82+<`+`jN7RKoxPBY0&
+zx6Ni3l7hI%#WTp&IRxx4ICJ{N+l&g^H)XT8vrNy=U>1^xsX_NBR0pbmyQbR|u*<X;
+P6tDv^$M%8(&RahKk>QYK
+
+diff --git a/configure.ac b/configure.ac
+index 0862b381ff..26de5bed24 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -597,7 +597,7 @@ AS_IF([test x"$enable_ocamldoc" = "xno"],
+ # Initialization of libtool
+ # Allow the MSVC linker to be found even if ld isn't installed.
+ # User-specified LD still takes precedence.
+-AC_CHECK_TOOLS([LD],[ld link])
++AC_CHECK_TARGET_TOOLS([LD],[ld link])
+ # libtool expects host_os=mingw for native Windows
+ # Also, it has been observed that, on some platforms (e.g. msvc) LT_INIT
+ # alters the CFLAGS variable, so we save its value before calling the macro
+@@ -1027,7 +1027,7 @@ AS_CASE([$flexdll_source_dir,$supports_shared_libraries,$flexlink,$host],
+ 
+ mkexe_cmd_exp="$CC"
+ 
+-AS_CASE([$ocaml_cc_vendor,$host],
++AS_CASE([$ocaml_cc_vendor,$target],
+   [*,x86_64-*-darwin*],
+     [oc_ldflags='-Wl,-no_compact_unwind';
+     AC_DEFINE([HAS_ARCH_CODE32], [1])],
+@@ -1045,7 +1045,7 @@ AS_CASE([$ocaml_cc_vendor,$host],
+     )
+     ostype="Cygwin"],
+   [*,*-*-mingw32*],
+-    [AS_CASE([$host],
++    [AS_CASE([$target],
+       [i686-*-*], [oc_dll_ldflags="-static-libgcc"])
+     ostype="Win32"
+     toolchain="mingw"
+@@ -1342,7 +1342,7 @@ system=unknown
+ # preserving $arch = 'none' <=> $system = 'unknown'
+ has_native_backend=no
+ native_ldflags=""
+-AS_CASE([$host],
++AS_CASE([$target],
+   [[i[3456]86-*-linux*]],
+     [arch=i386; system=linux],
+   [[i[3456]86-*-freebsd*]],
+@@ -1479,7 +1479,7 @@ AS_IF([$natdynlink],
+ 
+ AC_DEFINE_UNQUOTED([OCAML_OS_TYPE], ["$ostype"])
+ 
+-AC_CHECK_TOOL([DIRECT_LD],[ld])
++AC_CHECK_TARGET_TOOL([DIRECT_LD],[ld])
+ AS_IF([test -z "$PARTIALLD"],
+   [AS_CASE(["$host,$ocaml_cc_vendor"],
+     [x86_64-*-darwin*,gcc-*], [PACKLD_FLAGS=' -arch x86_64'],
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0005-Use-the-strip-command-detected-by-libtool.patch b/patches/5.2.1/0005-Use-the-strip-command-detected-by-libtool.patch
new file mode 100644
index 0000000..a0e2cc9
--- /dev/null
+++ b/patches/5.2.1/0005-Use-the-strip-command-detected-by-libtool.patch
@@ -0,0 +1,42 @@
+From a67f2491770af3937b9cf5c548855dff678d99b5 Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Fri, 5 Jul 2024 12:42:36 +0200
+Subject: [PATCH 05/14] Use the `strip` command detected by libtool
+
+Instead of using `strip` unconditionally to build `tmpheader.exe`, use
+the `strip` command detected by `libtool` during configure so that it is
+replaced with `:` when the command is absent and it becomes easy to
+override it if need be
+---
+ Makefile.config.in | 1 +
+ stdlib/Makefile    | 2 +-
+ 2 files changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile.config.in b/Makefile.config.in
+index 4243bebad9..b91634efb6 100644
+--- a/Makefile.config.in
++++ b/Makefile.config.in
+@@ -185,6 +185,7 @@ OCAMLOPT_CFLAGS=@ocamlc_cflags@
+ OCAMLOPT_CPPFLAGS=@ocamlc_cppflags@
+ NATIVECCLIBS=@cclibs@
+ SYSTHREAD_SUPPORT=@systhread_support@
++STRIP=@STRIP@
+ PACKLD=@PACKLD@$(EMPTY)
+ CCOMPTYPE=@ccomptype@
+ TOOLCHAIN=@toolchain@
+diff --git a/stdlib/Makefile b/stdlib/Makefile
+index 50f825a1b3..b6286920f2 100644
+--- a/stdlib/Makefile
++++ b/stdlib/Makefile
+@@ -98,7 +98,7 @@ tmpheader.exe: $(HEADERPROGRAM).$(O)
+ 	$(V_MKEXE)$(call MKEXE_VIA_CC,$@,$^)
+ # FIXME This is wrong - mingw could invoke strip; MSVC equivalent?
+ ifneq "$(UNIX_OR_WIN32)" "win32"
+-	strip $@
++	$(STRIP) $@
+ endif
+ 
+ stdlib.cma: $(OBJS)
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0006-Strip-tmpheader.exe-also-on-Windows.patch b/patches/5.2.1/0006-Strip-tmpheader.exe-also-on-Windows.patch
new file mode 100644
index 0000000..5b6d595
--- /dev/null
+++ b/patches/5.2.1/0006-Strip-tmpheader.exe-also-on-Windows.patch
@@ -0,0 +1,32 @@
+From aefbbb813cdc27252153d2cf043900681c8689d8 Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Fri, 5 Jul 2024 12:58:58 +0200
+Subject: [PATCH 06/14] Strip tmpheader.exe also on Windows
+
+GNU strip can be called safely on binaries generated by cl as well as by
+MinGW GCC (even if it doesn't produce a smaller executable for
+cl-generated binaries) so invoke strip also on Windows so that MinGW
+binaries are properly stripped
+Tested with GNU strip 2.42
+---
+ stdlib/Makefile | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/stdlib/Makefile b/stdlib/Makefile
+index b6286920f2..a7f2e60a7a 100644
+--- a/stdlib/Makefile
++++ b/stdlib/Makefile
+@@ -96,10 +96,7 @@ endif
+ .INTERMEDIATE: tmpheader.exe
+ tmpheader.exe: $(HEADERPROGRAM).$(O)
+ 	$(V_MKEXE)$(call MKEXE_VIA_CC,$@,$^)
+-# FIXME This is wrong - mingw could invoke strip; MSVC equivalent?
+-ifneq "$(UNIX_OR_WIN32)" "win32"
+ 	$(STRIP) $@
+-endif
+ 
+ stdlib.cma: $(OBJS)
+ 	$(V_LINKC)$(CAMLC) -a -o $@ $^
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0007-Allow-ocaml-as-a-target-OS-to-configure-freestanding.patch b/patches/5.2.1/0007-Allow-ocaml-as-a-target-OS-to-configure-freestanding.patch
new file mode 100644
index 0000000..0af801e
--- /dev/null
+++ b/patches/5.2.1/0007-Allow-ocaml-as-a-target-OS-to-configure-freestanding.patch
@@ -0,0 +1,65 @@
+From 627cf134087f67001306b9480a51f6c5ea082758 Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Mon, 26 Feb 2024 11:51:11 +0100
+Subject: [PATCH 07/14] Allow `ocaml` as a target OS to configure freestanding
+ cross-compilers
+
+Allow the use of *-*-ocaml or *-*-*-ocaml target triplets to stand for
+freestanding cross-compilers by temporarily rewriting the target OS to
+`none` when generating the canonical target
+
+This allows to use *-*-ocaml and *-*-*-ocaml prefixes for cross-compiler
+specific toolchains, so that all the specific tools (for instance
+aarch64-solo5-ocaml-gcc, etc.) are automatically discovered
+---
+ configure    | Bin 682314 -> 682823 bytes
+ configure.ac |  17 +++++++++++++++++
+ 2 files changed, 17 insertions(+)
+
+diff --git a/configure b/configure
+index b393e6e2871a942e0171f1a52b70f75ef74f780a..498bc2042686e7fc202a6ecdfaa1ca6d2c780efc 100755
+GIT binary patch
+delta 551
+zcmb7Au}T9$5G64hy<e~yHwW>AYqSwV3K0acut*y?#&dEm?A?al#Tc8Uibbka`3PGf
+zpCDMKu(PuF8=Rb?7e!E(x6Hg5-n^N|dGPQQ4DU;Kqd^T0mC`*BI>uB9Kno5{LJrPa
+z(9s4uhR8b1E@YNKtkbSkWZ=9Hj?%6+Xr$_cp`MYBJG>gWODae>4I<MS3E(K9j0`%i
+zb5D%S4`ht$qun!vDtezDp^|8u!Y`)6i_sD+aUe6OZF>Ma;o{|61aQCv0LGEUD~e8z
+zTTP$8oLnUJu%5@31`e*51@l62Dx261{k<^X;#0yeh(n|C<>7x0jx1mLPY!+`Kb@Rb
+sH>dMqd4KjYD&17JzPbN#R&m=Nml$Qn3ZueUWvnr(jP+T2yz%<{2ER13{Qv*}
+
+delta 60
+zcmX?pP4m<x&4w+EtJ|gvH#3@V-`l}h&C(v#%Lv3wK+FupAU-P)vjH(X5OZvg>g9ZU
+F7XS(}7}x*+
+
+diff --git a/configure.ac b/configure.ac
+index 26de5bed24..6f02258356 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -286,7 +286,24 @@ AC_CONFIG_COMMANDS_PRE(OCAML_QUOTED_STRING_ID)
+ 
+ AC_CANONICAL_BUILD
+ AC_CANONICAL_HOST
++# Allow "ocaml" as target OS for freestanding compiler by temporarily rewriting
++# the target OS to "none" to generate the canonical target
++real_target_alias="$target_alias"
++AS_CASE([$target_alias],
++  [*-*-*-ocaml],
++    [ac_save_IFS=$IFS
++    IFS='-'
++    set x $target_alias
++    target_alias="$2-$3-none"
++    IFS=$ac_save_IFS],
++  [*-*-ocaml],
++    [ac_save_IFS=$IFS
++    IFS='-'
++    set x $target_alias
++    target_alias="$2-none"
++    IFS=$ac_save_IFS])
+ AC_CANONICAL_TARGET
++target_alias="$real_target_alias"
+ 
+ # Override cross_compiling and ac_tool_prefix variables since the C toolchain is
+ # used to generate target code when building a cross compiler
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0008-Define-OS-type-to-None.patch b/patches/5.2.1/0008-Define-OS-type-to-None.patch
new file mode 100644
index 0000000..089f689
--- /dev/null
+++ b/patches/5.2.1/0008-Define-OS-type-to-None.patch
@@ -0,0 +1,38 @@
+From 8056ab2f13faa7a484dc1d985208a6066cebfc89 Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Mon, 26 Feb 2024 12:06:45 +0100
+Subject: [PATCH 08/14] Define OS type to None
+
+---
+ configure    | Bin 682823 -> 682873 bytes
+ configure.ac |   4 +++-
+ 2 files changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/configure b/configure
+index 498bc2042686e7fc202a6ecdfaa1ca6d2c780efc..0eebc7063ceea9c5c392b02e68dce28144556545 100755
+GIT binary patch
+delta 89
+zcmX?pP4nk9&4w1n7N!>F7M2#)Eo{-()pfLVwRH3H^HOWHz|7Q~G))C7E(IXSFD|Jp
+lNVQe+1IkWsRN)k!zQC8At3CHR8xXStF~|1Y>zubH0{~+sAF2QV
+
+delta 44
+ycmex)P4oCQ&4w1n7N!>F7M2#)Eo{-(r@y(&F3>*rIvWtP12M<;xz{=GOa=hQ!xZiS
+
+diff --git a/configure.ac b/configure.ac
+index 6f02258356..5523a1013c 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -1090,7 +1090,9 @@ AS_CASE([$ocaml_cc_vendor,$target],
+     [oc_ldflags='-brtl -bexpfull'
+     AC_DEFINE([HAS_ARCH_CODE32], [1])],
+   [gcc-*,powerpc-*-linux*],
+-    [oc_ldflags="-mbss-plt"])
++    [oc_ldflags="-mbss-plt"],
++  [*,*-*-none|*,*-*-elf],
++    [ostype="None"])
+ 
+ ## Program to use to install files
+ AC_PROG_INSTALL
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0009-Add-freestanding-targets-to-supported-configurations.patch b/patches/5.2.1/0009-Add-freestanding-targets-to-supported-configurations.patch
new file mode 100644
index 0000000..8c24fcb
--- /dev/null
+++ b/patches/5.2.1/0009-Add-freestanding-targets-to-supported-configurations.patch
@@ -0,0 +1,40 @@
+From cbcf96dca5420b9a2665b0064c5ba2b37b7ecaa6 Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Mon, 26 Feb 2024 19:35:26 +0100
+Subject: [PATCH 09/14] Add freestanding targets to supported configurations
+
+---
+ configure    | Bin 682873 -> 683028 bytes
+ configure.ac |   6 +++++-
+ 2 files changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/configure b/configure
+index 0eebc7063ceea9c5c392b02e68dce28144556545..d95fd568597e59d6f9e92aacadc9f50840dcee16 100755
+GIT binary patch
+delta 99
+zcmex)O>@c(&4w1n7N!>F7M2#)7Pc+yfyvYRBiK2opN(bbWXa3VOPzi;f!$ad#8R-f
+sR#4X9Qcy@tEK1HWGtt%31uNK_$ZiZ)+8&t94#XTl%(*=<nM;EM0JW1Ke*gdg
+
+delta 46
+zcmbPoL-Xe~&4w1n7N!>F7M2#)7Pc+yfyvW13UCOw|4(KIVh$kY-2OkAOOyiuw<;1a
+
+diff --git a/configure.ac b/configure.ac
+index 5523a1013c..3b2de0b053 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -1458,7 +1458,11 @@ AS_CASE([$target],
+   [x86_64-*-cygwin*],
+     [has_native_backend=yes; arch=amd64; system=cygwin],
+   [riscv64-*-linux*],
+-    [has_native_backend=yes; arch=riscv; model=riscv64; system=linux]
++    [has_native_backend=yes; arch=riscv; model=riscv64; system=linux],
++  [x86_64-*-none],
++    [has_native_backend=yes; arch=amd64; system=none],
++  [aarch64-*-none],
++    [has_native_backend=yes; arch=arm64; system=none]
+ )
+ 
+ AS_CASE([$arch],
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0010-Check-that-the-configured-and-the-installed-OCaml-ar.patch b/patches/5.2.1/0010-Check-that-the-configured-and-the-installed-OCaml-ar.patch
new file mode 100644
index 0000000..87b0c45
--- /dev/null
+++ b/patches/5.2.1/0010-Check-that-the-configured-and-the-installed-OCaml-ar.patch
@@ -0,0 +1,46 @@
+From 156caacd6b9b4d3d83adf02ffd0c68f11a0ff5a7 Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Tue, 19 Mar 2024 19:14:29 +0100
+Subject: [PATCH 10/14] Check that the configured and the installed OCaml are
+ compatible
+
+---
+ configure    | Bin 683028 -> 683595 bytes
+ configure.ac |   7 +++++++
+ 2 files changed, 7 insertions(+)
+
+diff --git a/configure b/configure
+index d95fd568597e59d6f9e92aacadc9f50840dcee16..58c25a0c685bf6860c63c9c394d191f9281bd1b3 100755
+GIT binary patch
+delta 436
+zcmbPoL-X_<&4w1n7N!>F7M2#)Eo{FyO_deGQx%F*3rjPLQWX*v^78X^lZ*0;i*=Lp
+za|<$aQi~Mw(-cZFQWc65b5j+{Qj3Z+^Yf-}+{1384HAV4z!YWX6_+ID<fNu3_&X=&
+z<|x1nnZA&lNvfU%4SITd3Q7ugYG&37wOk57keE}HnwU}<54Ry6YPD@belpOiWCh)_
+zywcnRu;NUhlT(XJ6e^TV^^Eikl@x4&Ocg1dW++YHAj#<<1afU+NoG<`s)7bsqvrI$
+zMn+L=;vcn{B&Hi&U>9)8%)`*8P*$v<g3~fhB?ToFA5TA5KYt|!Q?9hk=?7EUjoUT2
+T*npTFh&h0mbGrr?*PBEDlL(Th
+
+delta 48
+zcmX?oM{~*z&4w1n7N!>F7M2#)Eo{Fyr$_j)>$S)8umLeU5OV-A=k|CWt~ZGQuvrin
+
+diff --git a/configure.ac b/configure.ac
+index 3b2de0b053..c5b2a3f217 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -825,6 +825,13 @@ AS_IF(
+     CPPFLAGS_FOR_BUILD='$(CPPFLAGS)'
+     LDFLAGS_FOR_BUILD='$(LDFLAGS)'],
+     [cross_compiler=true
++    # We require a non-cross-compiler of the same version
++    AC_MSG_CHECKING([the version of the installed OCaml compiler])
++    already_installed_version=`ocamlc -vnum`
++    AS_IF([test x"AC_PACKAGE_VERSION" = x"$already_installed_version"],
++          [AC_MSG_RESULT([compatible (AC_PACKAGE_VERSION)])],
++          [AC_MSG_ERROR(m4_normalize([incompatible (AC_PACKAGE_VERSION vs
++             $already_installed_version)]))])
+     AC_MSG_NOTICE([detecting the C toolchain for build])
+     AX_PROG_CC_FOR_BUILD])
+ 
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0011-Use-the-target-pkg-config-to-detect-zstd.patch b/patches/5.2.1/0011-Use-the-target-pkg-config-to-detect-zstd.patch
new file mode 100644
index 0000000..f4d0a0e
--- /dev/null
+++ b/patches/5.2.1/0011-Use-the-target-pkg-config-to-detect-zstd.patch
@@ -0,0 +1,44 @@
+From 40f00c44630bae376edf63dc5f76150b3a8065af Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Wed, 20 Mar 2024 17:41:26 +0100
+Subject: [PATCH 11/14] Use the target pkg-config to detect zstd
+
+Make sure that we don't detect zstd on build when we are building a
+cross-compiler, as the native zstd has no reason to be compatible with
+the cross toolchain
+---
+ configure    | Bin 683595 -> 683354 bytes
+ configure.ac |   2 +-
+ 2 files changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/configure b/configure
+index 58c25a0c685bf6860c63c9c394d191f9281bd1b3..e364c57560a234055311de9b09ff0f399fd0f44a 100755
+GIT binary patch
+delta 151
+zcmV;I0BHZq+$q}HDS(6lgaU*Egam{Iga(8Mv<N(Mmy~M<E0>RQ2tN&UVRC0>bYEd?
+zX<>6Mx88CHV+59$0ST8ba0d&QSa%2*m(sogDwlJ22ppG`a0ef^tak{b1DEr^2oaZv
+zcnA~)A|NIvAeVu72pb4JB4%N1b7dm8OnV4E0hi=`2q6SzY;$FouzUy_hXsBJw*`I)
+FM({SFH0=NY
+
+delta 171
+zcmcb0OY`&{&4w1n7N!>F7M2#)7Pc1lEgUvQ)4#lA3T7_IPM_Ylo5Ongft!qiVBUq@
+z9J8lOlyUHFk1yuf&OAL}1(W!6t#S^D>6zsm^3z4WFv@OUUe2+YdHSzX4({zst2qo9
+zr~BKp@ktbv#0Pl0$2<G`xp}%PDcCAhSSyrdq~=ZkRl^}Qo%=G=<mn1GSOuofjbU~J
+Wv5co*ui=ny7pdjgE>g?s_5lEp)jm4_
+
+diff --git a/configure.ac b/configure.ac
+index c5b2a3f217..14d0356368 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -2261,7 +2261,7 @@ AC_CHECK_HEADER([spawn.h],
+   [AC_CHECK_FUNC([posix_spawn],
+     [AC_CHECK_FUNC([posix_spawnp], [AC_DEFINE([HAS_POSIX_SPAWN])])])])
+ 
+-AC_PATH_TOOL([PKG_CONFIG], [pkg-config], [false])
++AC_PATH_TARGET_TOOL([PKG_CONFIG], [pkg-config], [false])
+ 
+ ## ZSTD compression library
+ 
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0012-WIP-Add-a-Makefile.cross-for-recipes-to-build-a-cros.patch b/patches/5.2.1/0012-WIP-Add-a-Makefile.cross-for-recipes-to-build-a-cros.patch
new file mode 100644
index 0000000..44c0458
--- /dev/null
+++ b/patches/5.2.1/0012-WIP-Add-a-Makefile.cross-for-recipes-to-build-a-cros.patch
@@ -0,0 +1,122 @@
+From 4ab2e100f97da1a4251137dfaf473af705f0274f Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Fri, 23 Feb 2024 16:56:07 +0100
+Subject: [PATCH 12/14] WIP Add a Makefile.cross for recipes to build a
+ cross-compiler
+
+Define cross.opt and cross-install targets
+
+FIXME: Problems of inconsistencies between compilation options (only
+about zstd?) between the native toolchain and the cross toolchain may
+break the build?
+---
+ Makefile       |  2 ++
+ Makefile.cross | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 85 insertions(+)
+ create mode 100644 Makefile.cross
+
+diff --git a/Makefile b/Makefile
+index df191af79c..cb6b3f4484 100644
+--- a/Makefile
++++ b/Makefile
+@@ -2732,6 +2732,8 @@ endif
+ 
+ include .depend
+ 
++include Makefile.cross
++
+ Makefile.config Makefile.build_config: config.status
+ config.status:
+ 	@echo "Please refer to the installation instructions:"
+diff --git a/Makefile.cross b/Makefile.cross
+new file mode 100644
+index 0000000000..b993783d2f
+--- /dev/null
++++ b/Makefile.cross
+@@ -0,0 +1,83 @@
++#**************************************************************************
++#*                                                                        *
++#*                                 OCaml                                  *
++#*                                                                        *
++#*                          Samuel Hym, Tarides                           *
++#*                                                                        *
++#*   Copyright 2024 Tarides                                               *
++#*                                                                        *
++#*   All rights reserved.  This file is distributed under the terms of    *
++#*   the GNU Lesser General Public License version 2.1, with the          *
++#*   special exception on linking described in the file LICENSE.          *
++#*                                                                        *
++#**************************************************************************
++
++# Recipes to build a cross-compiler (_not_ cross-compiling the compiler), aka
++# generating code that will run on `target`, assuming that a non-cross OCaml
++# compiler (so targetting our build machine) of the same version is available in
++# $PATH
++
++# We assume no zstd for the cross-compiler (ie no requirement on zstd for the
++# target)
++# Still the cross-compiler will run on host, not target. And as a consequence of
++# the rules linking it, the cross-compilers will be linked with the _build_
++# version of libcomprmarsh, so we still must discover the flags to link with
++# libzstd if it was set up in the non-cross compiler, so we rely on the
++# pkg-config command to get the linking flags for zstd
++PKG_CONFIG := pkg-config
++# This is used only once, so it doesn't have to be much lazier
++NATIVE_ZSTD_LIBS=ZSTD_LIBS="$(shell $(PKG_CONFIG) --libs libzstd)"
++# As the libcomprmarsh built by the C cross compiler will not be linked in, we
++# can build an empty one
++NO_ZSTD=libcomprmarsh_OBJECTS=
++
++CROSS_OVERRIDES=OCAMLRUN=ocamlrun NEW_OCAMLRUN=ocamlrun \
++  BOOT_OCAMLLEX=ocamllex OCAMLYACC=ocamlyacc
++CROSS_COMPILER_OVERRIDES=$(CROSS_OVERRIDES) CAMLC=ocamlc CAMLOPT=ocamlopt \
++  BEST_OCAMLC=ocamlc BEST_OCAMLOPT=ocamlopt BEST_OCAMLLEX=ocamllex
++
++INSTALL_OVERRIDES=build_ocamldoc=false WITH_DEBUGGER=
++
++# Freestanding target custom options
++ifeq "$(SYSTEM)" "none"
++RUNTIME_BUILD_OVERRIDES=runtime_PROGRAMS=
++INSTALL_OVERRIDES += runtime_PROGRAMS=`which ocamlrun` \
++  runtime_BYTECODE_STATIC_LIBRARIES=runtime/ld.conf
++else
++RUNTIME_BUILD_OVERRIDES=
++endif
++
++cross.opt:
++	$(MAKE) runtime-all $(NO_ZSTD) $(RUNTIME_BUILD_OVERRIDES)
++	$(MAKE) ocamlc ocamlopt $(TOOLS_BYTECODE_TARGETS) expunge \
++	  $(CROSS_COMPILER_OVERRIDES)
++	$(MAKE) library $(CROSS_OVERRIDES)
++ifneq "$(SYSTEM)" "none"
++	$(MAKE) ocamlyacc $(CROSS_OVERRIDES)
++	$(MAKE) ocamllex $(CROSS_COMPILER_OVERRIDES)
++endif
++	$(MAKE) ocaml $(CROSS_COMPILER_OVERRIDES)
++	$(MAKE) -C otherlibs all $(CROSS_OVERRIDES)
++	# Opt
++	$(MAKE) runtimeopt $(NO_ZSTD)
++	$(MAKE) ocamlc.opt ocamlopt.opt $(TOOLS_NATIVE_TARGETS) \
++	  $(NO_ZSTD) $(CROSS_COMPILER_OVERRIDES) $(NATIVE_ZSTD_LIBS)
++	$(MAKE) libraryopt $(NO_ZSTD) $(CROSS_OVERRIDES)
++	$(MAKE) otherlibrariesopt ocamltoolsopt $(NO_ZSTD) $(CROSS_OVERRIDES)
++	$(MAKE) tools-allopt.opt $(NO_ZSTD) $(CROSS_COMPILER_OVERRIDES)
++
++.PHONY: cross-install
++cross-install:
++	# dummy files
++	touch \
++	  $(addprefix toplevel/, \
++	    $(foreach ext,cmi cmt cmti cmx, native/nat__dummy__.$(ext)) \
++	      all__dummy__.cmx topstart.o native/tophooks.cmi)
++	$(LN) `which ocamlyacc` yacc/ocamlyacc.opt$(EXE)
++	$(LN) `which ocamllex` lex/ocamllex.opt$(EXE)
++ifeq "$(SYSTEM)" "none"
++	$(LN) `which ocamlyacc` yacc/ocamlyacc$(EXE)
++	$(LN) `which ocamllex` lex/ocamllex$(EXE)
++endif
++	# Real installation
++	$(MAKE) install $(INSTALL_OVERRIDES) OCAMLRUN=ocamlrun
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0013-Set-Max_domains-to-1.patch b/patches/5.2.1/0013-Set-Max_domains-to-1.patch
new file mode 100644
index 0000000..2eb5515
--- /dev/null
+++ b/patches/5.2.1/0013-Set-Max_domains-to-1.patch
@@ -0,0 +1,35 @@
+From bde7866513c8deeddd9165d05502162229abd13a Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Fri, 12 Apr 2024 19:21:52 +0200
+Subject: [PATCH 13/14] Set Max_domains to 1
+
+Solo5 is single-core with no scheduler, so avoid the useless memory
+waste
+
+Note that since PR#13272 the maximum number of domains can set using a
+parameter in OCAMLRUNPARAM so `getenv` might be a better place to set
+this limit in the future
+---
+ runtime/caml/domain.h | 6 +-----
+ 1 file changed, 1 insertion(+), 5 deletions(-)
+
+diff --git a/runtime/caml/domain.h b/runtime/caml/domain.h
+index 4b9be80b41..986486478c 100644
+--- a/runtime/caml/domain.h
++++ b/runtime/caml/domain.h
+@@ -31,11 +31,7 @@ extern "C" {
+ 
+ /* The runtime currently has a hard limit on the number of domains.
+    This hard limit may go away in the future. */
+-#ifdef ARCH_SIXTYFOUR
+-#define Max_domains 128
+-#else
+-#define Max_domains 16
+-#endif
++#define Max_domains 1
+ 
+ /* is the minor heap full or an external interrupt has been triggered */
+ Caml_inline int caml_check_gc_interrupt(caml_domain_state * dom_st)
+-- 
+2.45.2
+
diff --git a/patches/5.2.1/0014-Set-stack-as-non-executable-on-freestanding-targets.patch b/patches/5.2.1/0014-Set-stack-as-non-executable-on-freestanding-targets.patch
new file mode 100644
index 0000000..d0e29b0
--- /dev/null
+++ b/patches/5.2.1/0014-Set-stack-as-non-executable-on-freestanding-targets.patch
@@ -0,0 +1,53 @@
+From d6d0345ba0d079ffc17c397ae1773e50ecc470b1 Mon Sep 17 00:00:00 2001
+From: Samuel Hym <samuel@tarides.com>
+Date: Mon, 29 Apr 2024 18:21:24 +0200
+Subject: [PATCH 14/14] Set stack as non-executable on freestanding targets
+
+---
+ asmcomp/amd64/emit.mlp | 2 +-
+ asmcomp/arm64/emit.mlp | 2 +-
+ runtime/amd64.S        | 2 +-
+ 3 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/asmcomp/amd64/emit.mlp b/asmcomp/amd64/emit.mlp
+index 619ce9c3c5..19f896c1ac 100644
+--- a/asmcomp/amd64/emit.mlp
++++ b/asmcomp/amd64/emit.mlp
+@@ -1079,7 +1079,7 @@ let end_assembly() =
+     D.size frametable (ConstSub (ConstThis, ConstLabel frametable))
+   end;
+ 
+-  if system = S_linux then
++  if system = S_linux || system = S_unknown then
+     (* Mark stack as non-executable, PR#4564 *)
+     D.section [".note.GNU-stack"] (Some "") [ "%progbits" ];
+ 
+diff --git a/asmcomp/arm64/emit.mlp b/asmcomp/arm64/emit.mlp
+index 1816f8c345..41769e4f93 100644
+--- a/asmcomp/arm64/emit.mlp
++++ b/asmcomp/arm64/emit.mlp
+@@ -1217,7 +1217,7 @@ let end_assembly () =
+   emit_symbol_type emit_symbol lbl "object";
+   emit_symbol_size lbl;
+   begin match Config.system with
+-  | "linux" ->
++  | "linux" | "none" ->
+       (* Mark stack as non-executable *)
+       `	.section	.note.GNU-stack,\"\",%progbits\n`
+   | _ -> ()
+diff --git a/runtime/amd64.S b/runtime/amd64.S
+index 49c712b167..be0856a72b 100644
+--- a/runtime/amd64.S
++++ b/runtime/amd64.S
+@@ -1386,7 +1386,7 @@ G(caml_negf_mask):
+ G(caml_absf_mask):
+         .quad   0x7FFFFFFFFFFFFFFF, 0xFFFFFFFFFFFFFFFF
+ 
+-#if defined(SYS_linux)
++#if defined(SYS_linux) || defined(SYS_none)
+     /* Mark stack as non-executable, PR#4564 */
+         .section .note.GNU-stack,"",%progbits
+ #endif
+-- 
+2.45.2
+
diff --git a/test/test.c b/test/test.c
index 7717a15..8ab1365 100644
--- a/test/test.c
+++ b/test/test.c
@@ -1,6 +1,6 @@
 #include <log.h>
 
 int main(int ac, const char *av[]) {
-  gilbraltar_log(INFO, "Hello World!\r\n");
+  gilbraltar_log(INFO, "Hello Tazi!\r\n");
   return (0);
 }
diff --git a/toolchain/ar.in b/toolchain/ar.in
new file mode 100644
index 0000000..1795c99
--- /dev/null
+++ b/toolchain/ar.in
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec @@CONFIG_TARGET_AR@@ "$@"
diff --git a/toolchain/as.in b/toolchain/as.in
new file mode 100644
index 0000000..3e4eb88
--- /dev/null
+++ b/toolchain/as.in
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec @@CONFIG_TARGET_CC@@ -c "$@"
diff --git a/toolchain/cc.in b/toolchain/cc.in
new file mode 100644
index 0000000..8f502a8
--- /dev/null
+++ b/toolchain/cc.in
@@ -0,0 +1,130 @@
+#!/bin/sh
+# Copyright (c) 2015-2021 Solo5 Contributors
+# Copyright (c) 2024 Romain Calascibetta
+#
+# This file is part of Gilbraltar, a bare-metal OS for RaspBerry Pi 5.
+#
+# Permission to use, copy, modify, and/or distribute this software
+# for any purpose with or without fee is hereby granted, provided
+# that the above copyright notice and this permission notice appear
+# in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+# AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+# OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+# @@CONFIG_TARGET_TRIPLE@@-cc: Gilbraltar wrapper for 'cc'.
+# Generated by configure.sh at build time.
+#
+# Passes through to @@CONFIG_TARGET_CC@ for actual work. Defines all flags
+# required for correct operation when building C code intended for inclusion in
+# a Gilbraltar operating system.
+#
+# Provides a '-z gilbraltar-abi=ABI' option to select the Gilbraltar bindings to
+# use if linking. ABI defaults to 'stub' to accomodate non-Gilbraltar-aware
+# build systems, such as GNU autoconf, which use 'cc'-as-linker to test for the
+# presence of symbols.
+
+prog="$(basename $0)"
+I="$(dirname $0)/../include"
+[ ! -d "${I}" ] && echo "$prog: Could not determine include path" 1>&2 && exit 1
+L="$(dirname $0)/../lib/@@CONFIG_TARGET_TRIPLE@@"
+[ ! -d "${L}" ] && echo "$prog: Could not determine library path" 1>&2 && exit 1
+# we can't really tell if 'cc' is called with no input, but work around the
+# most obvious cases and stop them from "succeeding" and producing an "a.out"
+[ "$#" -lt 1 ] && \
+    echo "$prog: No input files. Compilation terminated." 1>&1 && exit 1
+[ "$#" -eq 1 -a "$1" = "-v" ] && exec @@CONFIG_TARGET_CC@@ "$@"
+# default to cc as linker, unless we see args to the contrary
+M=link
+# cc as linker with no -z gilbraltar-abi= defaults to stub
+B=stub
+Z=
+for arg do
+    shift
+    if [ -n "${Z}" ]; then
+        # handle -z linker-arg
+        Z=
+        case "$arg" in
+            gilbraltar-abi=*)
+                B="${arg##*=}"
+                continue
+                ;;
+            *)
+                set -- "$@" "-z" "$arg"
+                continue
+                ;;
+        esac
+    fi
+
+    case "$arg" in
+        -c|-S|-E)
+            M=compile
+            ;;
+        -z)
+            if [ -z "${Z}" ]; then
+                Z=1
+                continue
+            fi
+            ;;
+    esac
+    set -- "$@" "$arg"
+done
+case ${M} in
+    compile)
+        [ -n "${__V}" ] && set -x
+	echo exec @@CONFIG_TARGET_CC@@ \
+            @@CONFIG_TARGET_CC_CFLAGS@@ \
+            -isystem ${I}/@@CONFIG_TARGET_TRIPLE@@ \
+            -I ${I} \
+	    -D__BSD_VISIBLE=0 \
+	    -D__XSI_VISIBLE=0 \
+	    -std=c11 \
+            -ffreestanding \
+            -fstack-protector-strong \
+	    -nostdlib \
+	    -nostartfiles \
+            -mstrict-align \
+	    -Wall \
+	    -DAARCH=64 \
+	    -mcpu=cortex-a76 \
+            "$@" ;
+        exec @@CONFIG_TARGET_CC@@ \
+            @@CONFIG_TARGET_CC_CFLAGS@@ \
+            -isystem ${I}/@@CONFIG_TARGET_TRIPLE@@ \
+            -I ${I} \
+	    -D__BSD_VISIBLE=0 \
+	    -D__XSI_VISIBLE=0 \
+	    -std=c11 \
+            -ffreestanding \
+            -fstack-protector-strong \
+	    -nostdlib \
+	    -nostartfiles \
+            -mstrict-align \
+	    -Wall \
+	    -DAARCH=64 \
+	    -mcpu=cortex-a76 \
+            "$@"
+        ;;
+    link)
+        [ -n "${B}" ] && B="-Wl,-T,gilbraltar.${B}.ld -lgilbraltar.${B}"
+        [ -n "${__V}" ] && set -x
+        exec @@CONFIG_TARGET_CC@@ \
+            @@CONFIG_TARGET_CC_CFLAGS@@ \
+            -isystem ${I}/@@CONFIG_TARGET_TRIPLE@@ \
+            -I ${I} \
+            -ffreestanding \
+            -fstack-protector-strong \
+            @@CONFIG_TARGET_CC_LDFLAGS@@ \
+            -nostdlib \
+            -L ${L} \
+            ${B} \
+            -static \
+            "$@"
+        ;;
+esac
diff --git a/toolchain/gcc.in b/toolchain/gcc.in
new file mode 120000
index 0000000..0895a9f
--- /dev/null
+++ b/toolchain/gcc.in
@@ -0,0 +1 @@
+cc.in
\ No newline at end of file
diff --git a/toolchain/ld.in b/toolchain/ld.in
new file mode 100644
index 0000000..38936de
--- /dev/null
+++ b/toolchain/ld.in
@@ -0,0 +1,73 @@
+#!/bin/sh
+# Copyright (c) 2015-2021 Solo5 Contributors
+# Copyright (c) 2024 Romain Calascibetta
+#
+# This file is part of Gilbraltar, a bare-metal OS for RaspBerry Pi 5.
+#
+# Permission to use, copy, modify, and/or distribute this software
+# for any purpose with or without fee is hereby granted, provided
+# that the above copyright notice and this permission notice appear
+# in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+# AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+# OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+# @@CONFIG_TARGET_TRIPLE@@-ld: Gilbraltar wrapper for 'ld'.
+# Generated by configure.sh at build time.
+#
+# Passes through to @@CONFIG_TARGET_LD@ for actual work. Defines all flags
+# required for correct operation when linking code intended for inclusion in a
+# Gilbraltar operating system.
+#
+# Provides a '-z gilbraltar-abi=ABI' option to select the RPi4 bindings to use
+# if linking. No default for ABI is provided, as it is expected that a caller
+# directly using 'ld' knows what they are doing.
+
+L="$(dirname $0)/../lib/@@CONFIG_TARGET_TRIPLE@@"
+[ ! -d "${L}" ] && echo "$0: Could not determine library path" 1>&2 && exit 1
+# ld accepts -z gilbraltar-abi=ABI, but does not provide a default ABI
+# this is intentional
+B=
+Z=
+for arg do
+    shift
+    if [ -n "${Z}" ]; then
+        # handle -z linker-arg
+        Z=
+        case "$arg" in
+            gilbraltar-abi=*)
+                B="${arg##*=}"
+                continue
+                ;;
+            *)
+                set -- "$@" "-z" "$arg"
+                continue
+                ;;
+        esac
+    fi
+
+    case "$arg" in
+        -z)
+            if [ -z "${Z}" ]; then
+                Z=1
+                continue
+            fi
+            ;;
+    esac
+    set -- "$@" "$arg"
+done
+[ -n "${B}" ] && B="-T $gilbraltar.{B}.ld -lgilbraltar.${B}"
+[ -n "${__V}" ] && set -x
+exec @@CONFIG_TARGET_LD@@ \
+    @@CONFIG_TARGET_LD_LDFLAGS@@ \
+    -nostdlib \
+    -L ${L} \
+    -static \
+    ${B} \
+    "$@"
diff --git a/toolchain/nm.in b/toolchain/nm.in
new file mode 100644
index 0000000..0a0e59f
--- /dev/null
+++ b/toolchain/nm.in
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec @@CONFIG_TARGET_NM@@ "$@"
diff --git a/toolchain/objcopy.in b/toolchain/objcopy.in
new file mode 100644
index 0000000..5b4f3c3
--- /dev/null
+++ b/toolchain/objcopy.in
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec @@CONFIG_TARGET_OBJCOPY@@ "$@"
diff --git a/toolchain/objdump.in b/toolchain/objdump.in
new file mode 100644
index 0000000..40769e8
--- /dev/null
+++ b/toolchain/objdump.in
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec @@CONFIG_TARGET_OBJDUMP@@ "$@"
diff --git a/toolchain/ranlib.in b/toolchain/ranlib.in
new file mode 100644
index 0000000..90db357
--- /dev/null
+++ b/toolchain/ranlib.in
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec @@CONFIG_TARGET_RANLIB@@ "$@"
diff --git a/toolchain/readelf.in b/toolchain/readelf.in
new file mode 100644
index 0000000..b236a16
--- /dev/null
+++ b/toolchain/readelf.in
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec @@CONFIG_TARGET_READELF@@ "$@"
diff --git a/toolchain/strip.in b/toolchain/strip.in
new file mode 100644
index 0000000..dad08a4
--- /dev/null
+++ b/toolchain/strip.in
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec @@CONFIG_TARGET_STRIP@@ "$@"