Makefile: replace -W -Wall with centralized $(GCCWARN)

Replace -W -Wall hardcoded into a bunch of Makefiles with $(GCCWARN),
a centralized variable defined in the root MCONFIG.  Add
-Wstrict-prototypes to the list of global warnings: we should never
have non-prototyped declarations.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/MCONFIG b/MCONFIG
index a716c6c5..c73520bd 100644
--- a/MCONFIG
+++ b/MCONFIG
@@ -60,6 +60,9 @@ WGET	 = wget
 
 com32    = $(topdir)/com32
 
+# Common warnings we want for all gcc-generated code
+GCCWARN := -W -Wall -Wstrict-prototypes
+
 # Common stanza to make gcc generate .*.d dependency files
 MAKEDEPS = -Wp,-MT,$@,-MD,$(dir $@).$(notdir $@).d