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Re: [PATCH] Test for profiling support (_mcount/gprof)
On 08/16/2017 09:43 AM, Andreas Schwab wrote:
> https://build.opensuse.org/package/live_build_log/home:Andreas_Schwab:glibc/glibc-testsuite/f/i586
One has to download the whole log file to find this:
[ 2374s] gcc: error: -pg and -fomit-frame-pointer are incompatible
This looks like a GCC deficiency. Anyway, please try the attached patch.
Thanks,
Florian
tst-gmon: Build with -fno-omit-frame-pointer
If glibc is built with -fomit-frame-pointer to undo the effect of
configuring GCC with --enable-frame-pointer, using -pg by itself results
in a build failure:
gcc: error: -pg and -fomit-frame-pointer are incompatible
2017-08-16 Florian Weimer <fweimer@redhat.com>
* gmon/Makefile (CFLAGS-tst-gmon.c): Add -fno-omit-frame-pointer.
diff --git a/gmon/Makefile b/gmon/Makefile
index 39f11acec2..62d96543ff 100644
--- a/gmon/Makefile
+++ b/gmon/Makefile
@@ -38,7 +38,7 @@ endif
# The mcount code won't work without a frame pointer.
CFLAGS-mcount.c := -fno-omit-frame-pointer
-CFLAGS-tst-gmon.c := -pg
+CFLAGS-tst-gmon.c := -fno-omit-frame-pointer -pg
LDFLAGS-tst-gmon := $(no-pie-ldflag)
CRT-tst-gmon := $(csu-objpfx)gcrt1.o
tst-gmon-ENV := GMON_OUT_PREFIX=$(objpfx)tst-gmon.data