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| author | Michael Brown | 2008-10-01 20:05:39 +0200 |
|---|---|---|
| committer | Michael Brown | 2008-10-01 20:24:56 +0200 |
| commit | 91802c6e85fb5153d397ca019a95632841999c1f (patch) | |
| tree | 85cf62a8e24137ae6d5d175c7357d7ebbffd120f /src/Makefile.housekeeping | |
| parent | [compiler] Allow for selective disabling of debug levels at runtime (diff) | |
| download | ipxe-91802c6e85fb5153d397ca019a95632841999c1f.tar.gz ipxe-91802c6e85fb5153d397ca019a95632841999c1f.tar.xz ipxe-91802c6e85fb5153d397ca019a95632841999c1f.zip | |
[makefile] Fix -fno-stack-protector test on older versions of gcc
Some older versions of gcc don't complain about unknown compiler flags
unless you ask them to actually compile; asking them to merely
preprocess won't trigger the error.
Fix the -fno-stack-protector test by making it attempt to compile an
empty file, rather than preprocess an empty file.
Diffstat (limited to 'src/Makefile.housekeeping')
| -rw-r--r-- | src/Makefile.housekeeping | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/Makefile.housekeeping b/src/Makefile.housekeeping index 2db9f558..6a4d877d 100644 --- a/src/Makefile.housekeeping +++ b/src/Makefile.housekeeping @@ -112,7 +112,8 @@ oldgas : # default, even when -ffreestanding is specified. We therefore need # to disable -fstack-protector if the compiler supports it. # -SP_TEST = $(CC) -fno-stack-protector -x c -E - < /dev/null >/dev/null 2>&1 +SP_TEST = $(CC) -fno-stack-protector -x c -c /dev/null \ + -o /dev/null >/dev/null 2>&1 SP_FLAGS := $(shell $(SP_TEST) && $(ECHO) '-fno-stack-protector') CFLAGS += $(SP_FLAGS) |