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| author | Florian Weimer <fweimer@redhat.com> | 2022-01-14 16:09:20 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2022-01-14 16:09:20 +0100 |
| commit | ef7c6d42fe163a5e49a478c43e655ce4633fa5ba (patch) | |
| tree | 6b81ceacb154c6386d4f4d4bb04490fb89ad3e8f | |
| parent | 5732a881aad24fac876f5505a212395048a7a483 (diff) | |
| download | glibc-ef7c6d42fe163a5e49a478c43e655ce4633fa5ba.tar.gz glibc-ef7c6d42fe163a5e49a478c43e655ce4633fa5ba.tar.xz glibc-ef7c6d42fe163a5e49a478c43e655ce4633fa5ba.zip | |
Generate gcc-macros.h
The file can be used to check the effect of the default compiler flags on code generation even in areas of the build that uses non-default compiler flags. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
| -rw-r--r-- | Makeconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Makeconfig b/Makeconfig index 9b6fc6b08f..2e79077343 100644 --- a/Makeconfig +++ b/Makeconfig @@ -1202,6 +1202,15 @@ $(common-objpfx)dl-tunable-list.stmp: \ touch $@ endif +# Dump the GCC macros used by the default compiler flags to a header +# file, so that they can be inspected when using different compiler +# flags. Add the GCCMACRO prefix to make these macro names unique. +$(common-objpfx)gcc-macros.h.in: $(common-objpfx)config.status + $(CC) $(CFLAGS) $(CPPFLAGS) -E -dM -x c -o $@ /dev/null +$(common-objpfx)gcc-macros.h: $(common-objpfx)gcc-macros.h.in + sed 's/^#define /#define GCCMACRO/' < $< > $@ +before-compile += $(common-objpfx)gcc-macros.h + # Generate version maps, but wait until sysdep-subdirs is known ifeq ($(sysd-sorted-done),t) ifeq ($(build-shared),yes) |