From 1c436ab541c61eee970bb1bb6da93d48a05d7824 Mon Sep 17 00:00:00 2001
From: Klaus Aehlig <klaus.aehlig@huawei.com>
Date: Wed, 12 Jun 2024 14:59:45 +0200
Subject: stage-0/gcc: use our own sh as interpreter

Unfortunately, this does not entirely removes the requirement of
a /bin/sh being present, as awk(1) is invoked during the build to
use popen(3) in one place, a libc function that has a hard-coded
reference to /bin/sh. Nevertheless, using our interpreter wherever
possible greatly reduces the dependency on the host system.
---
 src/bootstrap/stage-0-gcc.TARGETS | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/bootstrap/stage-0-gcc.TARGETS b/src/bootstrap/stage-0-gcc.TARGETS
index 33812ef..5f067a3 100644
--- a/src/bootstrap/stage-0-gcc.TARGETS
+++ b/src/bootstrap/stage-0-gcc.TARGETS
@@ -103,6 +103,9 @@
     , "export MAKE=${LOCALBASE}/bin/make"
     , "export PATH=$(pwd)/binutils/bin:${LOCALBASE}/bin:$PATH"
     , "export BUILD_ROOT_DIR=${ACTION_DIR}"
+    , "export SHELL=${LOCALBASE}/bin/sh"
+    , "export CONFIG_SHELL=${LOCALBASE}/bin/sh"
+    , "export CXX=no"
     , "unset LDFLAGS"
     , "CONF_ARGS="
     , "if [ -n \"$HOST_SYSTEM_HDR_DIR\" ]; then"
@@ -131,8 +134,16 @@
     , "cp -r binutils/. ${DESTDIR}/."
     , "chmod -R +w ${DESTDIR}/*"
     , "cd src"
+    , "for f in $(find . -type f -exec grep -q '#! */bin/sh' {} \\; -print)"
+    , "do"
+    , "  cp $f $f.__work"
+    , "  rm $f"
+    , "  chmod 755 $f.__work"
+    , "  sed -i 's|#! */bin/sh|#!'\"${SHELL}\"'|g' $f.__work"
+    , "  mv $f.__work $f"
+    , "done"
     , "export check_msgfmt=no   # do not use system's msgfmt, if available"
-    , "./configure --prefix=/ --enable-languages=c,c++ --disable-multilib --disable-shared --disable-lto --disable-gcov --disable-libmudflap --disable-libgomp --disable-libssp --disable-nls --disable-libitm ${CONF_ARGS} >configure.log 2>&1 || (cat configure.log && exit 1)"
+    , "${SHELL} ./configure --prefix=/ --enable-languages=c,c++ --disable-multilib --disable-shared --disable-lto --disable-gcov --disable-libmudflap --disable-libgomp --disable-libssp --disable-nls --disable-libitm ${CONF_ARGS} >configure.log 2>&1 || (cat configure.log && exit 1)"
     , "${MAKE} -j${NJOBS} >build.log 2>&1 || (cat configure.log build.log && exit 1)"
     , "${MAKE} -j${NJOBS} DESTDIR=${DESTDIR} install-strip >>build.log 2>&1 || (cat configure.log build.log && exit 1)"
     , "cd ${DESTDIR}"
-- 
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