mirror of
https://github.com/torvalds/linux.git
synced 2025-11-03 18:20:25 +02:00
ed58c0e9ee
When the compiler doesn't support gcc plugins (either due to missing headers or too old a version), report the problem and abort the build instead of emitting a warning and letting the build founder with arcane compiler errors. Signed-off-by: Kees Cook <keescook@chromium.org>
65 lines
1 KiB
Bash
Executable file
65 lines
1 KiB
Bash
Executable file
#!/bin/sh
|
|
srctree=$(dirname "$0")
|
|
|
|
SHOW_ERROR=
|
|
if [ "$1" = "--show-error" ] ; then
|
|
SHOW_ERROR=1
|
|
shift || true
|
|
fi
|
|
|
|
gccplugins_dir=$($3 -print-file-name=plugin)
|
|
plugincc=$($1 -E -x c++ - -o /dev/null -I"${srctree}"/gcc-plugins -I"${gccplugins_dir}"/include 2>&1 <<EOF
|
|
#include "gcc-common.h"
|
|
#if BUILDING_GCC_VERSION >= 4008 || defined(ENABLE_BUILD_WITH_CXX)
|
|
#warning $2 CXX
|
|
#else
|
|
#warning $1 CC
|
|
#endif
|
|
EOF
|
|
)
|
|
|
|
if [ $? -ne 0 ]
|
|
then
|
|
if [ -n "$SHOW_ERROR" ] ; then
|
|
echo "${plugincc}" >&2
|
|
fi
|
|
exit 1
|
|
fi
|
|
|
|
case "$plugincc" in
|
|
*"$1 CC"*)
|
|
echo "$1"
|
|
exit 0
|
|
;;
|
|
|
|
*"$2 CXX"*)
|
|
# the c++ compiler needs another test, see below
|
|
;;
|
|
|
|
*)
|
|
exit 1
|
|
;;
|
|
esac
|
|
|
|
# we need a c++ compiler that supports the designated initializer GNU extension
|
|
plugincc=$($2 -c -x c++ -std=gnu++98 - -fsyntax-only -I"${srctree}"/gcc-plugins -I"${gccplugins_dir}"/include 2>&1 <<EOF
|
|
#include "gcc-common.h"
|
|
class test {
|
|
public:
|
|
int test;
|
|
} test = {
|
|
.test = 1
|
|
};
|
|
EOF
|
|
)
|
|
|
|
if [ $? -eq 0 ]
|
|
then
|
|
echo "$2"
|
|
exit 0
|
|
fi
|
|
|
|
if [ -n "$SHOW_ERROR" ] ; then
|
|
echo "${plugincc}" >&2
|
|
fi
|
|
exit 1
|