[2/7] Generate gcc-macros.h
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Description |
dj/TryBot-apply_patch |
success
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Patch applied to master at the time it was sent
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Commit Message
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.
---
Makeconfig | 9 +++++++++
1 file changed, 9 insertions(+)
Comments
On Fri, Jan 14, 2022 at 4:42 AM Florian Weimer via Libc-alpha
<libc-alpha@sourceware.org> wrote:
>
> 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.
> ---
> Makeconfig | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> 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)
> --
> 2.34.1
>
>
LGTM.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
Thanks.
@@ -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)