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| author | Michael Brown | 2017-06-14 13:33:16 +0200 |
|---|---|---|
| committer | Michael Brown | 2017-06-14 13:33:16 +0200 |
| commit | 7c395b0e21806b946fe944a27fc273407f357ea1 (patch) | |
| tree | e96d8022cf9c77f249a88d0a3152d0e988ebf276 /src/arch | |
| parent | [intel] Add INTEL_NO_PHY_RST for I219-V (diff) | |
| download | ipxe-7c395b0e21806b946fe944a27fc273407f357ea1.tar.gz ipxe-7c395b0e21806b946fe944a27fc273407f357ea1.tar.xz ipxe-7c395b0e21806b946fe944a27fc273407f357ea1.zip | |
[build] Use -no-pie on newer versions of gcc
Some distributions patch gcc to generate position independent
executables by default. We currently include a workaround to check
for this and to add -fno-PIE -nopie to CFLAGS if required.
Newer patched versions of gcc require -fno-PIE -no-pie instead. Check
for both variants.
Reported-by: Nathan Rennie-Waldock <nathan.renniewaldock@gmail.com>
Originally-fixed-by: Markos Chandras <mchandras@suse.de>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/i386/Makefile | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/arch/i386/Makefile b/src/arch/i386/Makefile index fe3adc9c..b7c2792d 100644 --- a/src/arch/i386/Makefile +++ b/src/arch/i386/Makefile @@ -74,10 +74,15 @@ CFLAGS += -Ui386 # recognise an option that starts with "no", so we have to test for # output on stderr instead of checking the exit status. # +# Current versions of gcc require -no-pie; older versions require +# -nopie. We therefore test for both. +# ifeq ($(CCTYPE),gcc) -PIE_TEST = [ -z "`$(CC) -fno-PIE -nopie -x c -c /dev/null -o /dev/null 2>&1`" ] -PIE_FLAGS := $(shell $(PIE_TEST) && $(ECHO) '-fno-PIE -nopie') -WORKAROUND_CFLAGS += $(PIE_FLAGS) +PIE_TEST = [ -z "`$(CC) -fno-PIE -no-pie -x c -c /dev/null -o /dev/null 2>&1`" ] +PIE_FLAGS := $(shell $(PIE_TEST) && $(ECHO) '-fno-PIE -no-pie') +PIE_TEST2 = [ -z "`$(CC) -fno-PIE -nopie -x c -c /dev/null -o /dev/null 2>&1`" ] +PIE_FLAGS2 := $(shell $(PIE_TEST2) && $(ECHO) '-fno-PIE -nopie') +WORKAROUND_CFLAGS += $(PIE_FLAGS) $(PIE_FLAGS2) endif # i386-specific directories containing source files |