[XS] Change in coreboot[main]: crossgcc: Add buildgcc support for Apple M1/M2 devices

[Felix Singer (Code Review)]

Felix Singer has submitted this change. ( https://review.coreboot.org/c/coreboot/+/80435?usp=email )

Change subject: crossgcc: Add buildgcc support for Apple M1/M2 devices
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crossgcc: Add buildgcc support for Apple M1/M2 devices

GMP and IASL don't compile with the default compiler and linker flags:
- GMP's check for the MacOS architecture hard coded x86_64 but it also
  needs to know about arm64.
- iasl does some trickery on pointer alignment to save space(?), so we
  need to tell clang about it.

Change-Id: If4cca9d3e55051a6121d992e5320bee1df17af9f
Signed-off-by: Stefan Reinauer 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80435
Reviewed-by: Felix Singer 
Tested-by: build bot (Jenkins) 
---
M util/crossgcc/buildgcc
1 file changed, 4 insertions(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Felix Singer: Looks good to me, approved

diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index b294da5..2919376 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -847,10 +847,11 @@
    cd ../$IASL_DIR/generate/unix || exit 1
    CFLAGS="$HOSTCFLAGS"
    HOST="_LINUX"
-	test "$UNAME" = "Darwin" && HOST="_APPLE"
+	test "$UNAME" = "Darwin" && HOST="_APPLE" && OPT_LDFLAGS="-Wl,-no_fixup_chains"
    test "$UNAME" = "FreeBSD" && HOST="_FreeBSD"
    test "$UNAME" = "Cygwin" && HOST="_CYGWIN"
    HOST="$HOST" CFLAGS="$CFLAGS" \
+	OPT_LDFLAGS="$OPT_LDFLAGS" \
    OPT_CFLAGS="-O -D_FORTIFY_SOURCE=2 -D COREBOOT_TOOLCHAIN_VERSION='"coreboot toolchain v$CROSSGCC_VERSION"' " \
    $MAKE $JOBS CC="$(hostcc host)" iasl acpibin acpidump acpiexec acpihelp acpisrc acpixtract
    mkdir -p "$DESTDIR$TARGETDIR/bin/"
@@ -1143,6 +1144,8 @@
    # so we're setting the ABI explicitly here.
    if [ "$(sysctl -n hw.optional.x86_64 2>/dev/null)" -eq 1 ] 2>/dev/null; then
    	OPTIONS="ABI=64"
+	elif [ "$(sysctl -n hw.optional.arm64 2>/dev/null)" -eq 1 ] 2>/dev/null; then
+		OPTIONS="ABI=64"
    else
    	OPTIONS="ABI=32"
    fi