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| author | Michael Brown <mcb30@ipxe.org> | 2012-11-02 13:21:52 +0000 |
|---|---|---|
| committer | Michael Brown <mcb30@ipxe.org> | 2012-11-02 13:41:44 +0000 |
| commit | f008698c68618111babd2a5b7c5438110f69261e (patch) | |
| tree | fc2b067872b41ebfef92394fae25d101a73c74bf /src/arch | |
| parent | 6586e03fba2c04f066660c707a352b15ab99f33d (diff) | |
| download | ipxe-f008698c68618111babd2a5b7c5438110f69261e.zip ipxe-f008698c68618111babd2a5b7c5438110f69261e.tar.gz ipxe-f008698c68618111babd2a5b7c5438110f69261e.tar.bz2 | |
[build] Use -maccumulate-outgoing-args if required by gcc
Current versions of gcc require -maccumulate-outgoing-args if any
sysv_abi functions call ms_abi functions. This requirement is likely
to be lifted in future gcc versions, so test explicitly to see if the
current version of gcc requires -maccumulate-outgoing-args.
This problem is currently masked since the implied
-fasynchronous-unwind-tables (which is the default in current gcc
versions) implies -maccumulate-outgoing-args.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86_64/Makefile | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/arch/x86_64/Makefile b/src/arch/x86_64/Makefile index d2c2ff5..b687f34 100644 --- a/src/arch/x86_64/Makefile +++ b/src/arch/x86_64/Makefile @@ -26,6 +26,18 @@ CFLAGS += -fshort-wchar # CFLAGS += -Ui386 +# Add -maccumulate-outgoing-args if required by this version of gcc +# +ifeq ($(CCTYPE),gcc) +MS_ABI_TEST_CODE := extern void __attribute__ (( ms_abi )) ms_abi(); \ + void sysv_abi ( void ) { ms_abi(); } +MS_ABI_TEST = $(ECHO) '$(MS_ABI_TEST_CODE)' | \ + $(CC) -m64 -mno-accumulate-outgoing-args -x c -c - -o /dev/null \ + >/dev/null 2>&1 +MS_ABI_FLAGS := $(shell $(MS_ABI_TEST) || $(ECHO) '-maccumulate-outgoing-args') +WORKAROUND_CFLAGS += $(MS_ABI_FLAGS) +endif + # x86_64-specific directories containing source files # SRCDIRS += arch/x86_64/prefix |