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