util/xcompile: Allow overriding default compiler path
When looking for C compilers, xcompile uses the "" prefix to "gcc" and
"clang" as a last-resort option. This fails in environments where such
default names are blocked to prevent "unclean" builds - such as Chrome
OS.
Allow overriding this prefix using the GENERIC_COMPILER_PREFIX variable
that is hopefully both descriptive enough to suggest what it is for and
unusual enough to not trigger by chance.
Change-Id: I16239f66730f1dbcb7482f223cea4ee5957af10c
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56643
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/util/xcompile/xcompile b/util/xcompile/xcompile
index 9fdda03..4950a9e 100755
--- a/util/xcompile/xcompile
+++ b/util/xcompile/xcompile
@@ -10,6 +10,8 @@
set -x
fi
+# GENERIC_COMPILER_PREFIX defaults to empty but can be used to override
+# compiler search behavior
TMPFILE=""
XGCCPATH=$1
@@ -421,7 +423,7 @@
# Search toolchain by checking assembler capability.
for TBFDARCH in $TBFDARCHS; do
- for gccprefix in $search ""; do
+ for gccprefix in $search "$GENERIC_COMPILER_PREFIX"; do
program_exists "${gccprefix}as" || continue
for endian in $TENDIAN ""; do
{ testas "$gccprefix" "$TWIDTH" "$TBFDARCH" \
@@ -439,7 +441,7 @@
fi
for clang_arch in $TCLIST invalid; do
- for clang_prefix in $search $XGCCPATH ""; do
+ for clang_prefix in $search $XGCCPATH "$GENERIC_COMPILER_PREFIX"; do
testcc "${clang_prefix}clang" "-target ${clang_arch}-$TABI -c" && break 2
done
done