[PATCH 3/3] gprofng: Don't hardcode -Wno-format-truncation/-Wno-switch

[H.J. Lu]

Use -Wno-format-truncation and -Wno-switch only if they are supported.

	PR gprof/28969
	* configure.ac (GPROFNG_NO_FORMAT_TRUNCATION_CFLAGS): New
	AC_SUBST for -Wno-format-truncation.
	(GPROFNG_NO_SWITCH_CFLAGS): New AC_SUBST for -Wno-switch.
	* Makefile.in: Regenerate.
	* configure: Likewise.
	* src/Makefile.am (AM_CFLAGS): Replace -Wno-format-truncation
	and -Wno-switch with GPROFNG_NO_FORMAT_TRUNCATION_CFLAGS and
	GPROFNG_NO_SWITCH_CFLAGS.
	* src/Makefile.in: Regenerate.
---
 gprofng/Makefile.in     |   2 +
 gprofng/configure       | 122 +++++++++++++++++++++++++++++++++++++++-
 gprofng/configure.ac    |   4 ++
 gprofng/src/Makefile.am |   5 +-
 gprofng/src/Makefile.in |   8 ++-
 5 files changed, 135 insertions(+), 6 deletions(-)

diff --git a/gprofng/configure.ac b/gprofng/configure.ac
index 394e8b8837c..54a4279d6f5 100644
--- a/gprofng/configure.ac
+++ b/gprofng/configure.ac
@@ -42,6 +42,8 @@ AC_SUBST(GPROFNG_LIBADD)
 
 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
 ACX_PROG_CC_WARNING_OPTS([-Wall], [gprofng_cflags])
+ACX_PROG_CC_WARNING_OPTS([-Wno-format-truncation], [GPROFNG_NO_FORMAT_TRUNCATION_CFLAGS])
+ACX_PROG_CC_WARNING_OPTS([-Wno-switch], [GPROFNG_NO_SWITCH_CFLAGS])
 gprofng_cppflags="-U_ASM"
 build_collector=
 build_src=
@@ -190,6 +192,8 @@ AM_CONDITIONAL([BUILD_MAN], [test x$build_man = xtrue])
 
 AC_SUBST(LD_NO_AS_NEEDED, [${no_as_needed}])
 AC_SUBST(GPROFNG_CFLAGS, [${gprofng_cflags}])
+AC_SUBST(GPROFNG_NO_FORMAT_TRUNCATION_CFLAGS)
+AC_SUBST(GPROFNG_NO_SWITCH_CFLAGS)
 AC_SUBST(GPROFNG_CPPFLAGS, [${gprofng_cppflags}])
 AC_SUBST(GPROFNG_LIBDIR, [${libdir}])
 
diff --git a/gprofng/src/Makefile.am b/gprofng/src/Makefile.am
index b874b5b32aa..84fd1df9a44 100644
--- a/gprofng/src/Makefile.am
+++ b/gprofng/src/Makefile.am
@@ -102,8 +102,9 @@ AM_CPPFLAGS = $(GPROFNG_CPPFLAGS) -DLOCALEDIR=\"@localedir@\" -I.. -I$(srcdir) \
 	-I$(srcdir)/../common \
 	-I$(srcdir)/../../include -I$(srcdir)/../../opcodes \
 	-I../../bfd -I$(srcdir)/../../bfd
-AM_CFLAGS = $(GPROFNG_CFLAGS) $(PTHREAD_CFLAGS) -Wno-switch \
-	-Wno-format-truncation
+AM_CFLAGS = $(GPROFNG_CFLAGS) $(PTHREAD_CFLAGS) \
+	$(GPROFNG_NO_FORMAT_TRUNCATION_CFLAGS) \
+	$(GPROFNG_NO_SWITCH_CFLAGS)
 AM_CXXFLAGS = $(AM_CFLAGS)
 
 man_MANS = gprofng.1 \
-- 
2.35.1