[PATCHv2] Split out -Wframe-larger-than warning from WARN_CLFAGS

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Introduce STRICT_FRAME_LIMIT_CFLAGS that will be used for
the library code and RELAXED_FRAME_LIMIT_CFLAGS for daemon code
and the test code.

Raising the limit for tests allows building them with clang
with optimizations disabled.
---
v2:
* use the strict limit for tools and daemon too
* append the limit to WARN_CFLAGS once per Makefile

 daemon/Makefile.am          | 2 ++
 m4/virt-compile-warnings.m4 | 4 ++--
 src/Makefile.am             | 2 ++
 tests/Makefile.am           | 2 ++
 tools/Makefile.am           | 2 ++
 5 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index 60c7368..d02ab33 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -31,6 +31,8 @@ INCLUDES = \
 
 CLEANFILES =
 
+WARN_CFLAGS += $(STRICT_FRAME_LIMIT_CFLAGS)
+
 DAEMON_GENERATED =			\
 		remote_dispatch.h	\
 		lxc_dispatch.h		\
diff --git a/m4/virt-compile-warnings.m4 b/m4/virt-compile-warnings.m4
index 17fdf9d..768a5c8 100644
--- a/m4/virt-compile-warnings.m4
+++ b/m4/virt-compile-warnings.m4
@@ -169,8 +169,8 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
     # This should be < 256 really. Currently we're down to 4096,
     # but using 1024 bytes sized buffers (mostly for virStrerror)
     # stops us from going down further
-    wantwarn="$wantwarn -Wframe-larger-than=4096"
-    dnl wantwarn="$wantwarn -Wframe-larger-than=256"
+    gl_WARN_ADD(["-Wframe-larger-than=4096"], [STRICT_FRAME_LIMIT_CFLAGS])
+    gl_WARN_ADD(["-Wframe-larger-than=25600"], [RELAXED_FRAME_LIMIT_CFLAGS])
 
     # Extra special flags
     dnl -fstack-protector stuff passes gl_WARN_ADD with gcc
diff --git a/src/Makefile.am b/src/Makefile.am
index 75e4344..3c7adae 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -37,6 +37,8 @@ INCLUDES =	-I../gnulib/lib					\
 		-Dabs_topsrcdir="\"$(abs_topsrcdir)\""		\
 		$(GETTEXT_CPPFLAGS)
 
+WARN_CFLAGS += $(STRICT_FRAME_LIMIT_CFLAGS)
+
 AM_CFLAGS =	$(LIBXML_CFLAGS)				\
 		$(WARN_CFLAGS)					\
 		$(LOCK_CHECKING_CFLAGS)				\
diff --git a/tests/Makefile.am b/tests/Makefile.am
index aa9d2eb..279e9b7 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -33,6 +33,8 @@ INCLUDES = \
 	-I$(top_srcdir)/src/conf \
 	$(GETTEXT_CPPFLAGS)
 
+WARN_CFLAGS += $(RELAXED_FRAME_LIMIT_CFLAGS)
+
 AM_CFLAGS = \
 	-Dabs_builddir="\"$(abs_builddir)\"" \
 	-Dabs_topbuilddir="\"$(abs_topbuilddir)\"" \
diff --git a/tools/Makefile.am b/tools/Makefile.am
index 162d8e5..bfacaf2 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -23,6 +23,8 @@ INCLUDES = \
 	-I$(top_srcdir)						\
 	$(GETTEXT_CPPFLAGS)
 
+WARN_CFLAGS += $(STRICT_FRAME_LIMIT_CFLAGS)
+
 AM_LDFLAGS = \
 	$(RELRO_LDFLAGS)					\
 	$(NO_INDIRECT_LDFLAGS)					\
-- 
2.10.2

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