Fix the %build section of the spec file to pass in proper CFLAGS

The wrong assumptions were being made about what generate/unix/Makefile.config
would do with passed in values of OPT_CFLAGS, causing CWARNINGFLAGS to be
ignore in that makefile.  For packaging purposes, OPT_CFLAGS needs to be
used to pass in distro required values; we needed to add to that all of the
CWARNINGFLAGS so that we do not have to rewrite or significantly patch large
portions of the original makefile.

Signed-off-by: Al Stone <ahs3@redhat.com>

acpica-tools.spec

@@ -128,7 +128,43 @@ chmod a-x source/compiler/new_table.txt
 
 
 %build
-make OPT_CFLAGS="%{optflags}" OPT_LDFLAGS="%{__global_ldflags}"
+CWARNINGFLAGS="\
+    -std=c99\
+    -Wall\
+    -Wbad-function-cast\
+    -Wdeclaration-after-statement\
+    -Werror\
+    -Wformat=2\
+    -Wmissing-declarations\
+    -Wmissing-prototypes\
+    -Wstrict-aliasing=0\
+    -Wstrict-prototypes\
+    -Wswitch-default\
+    -Wpointer-arith\
+    -Wundef\
+    -Waddress\
+    -Waggregate-return\
+    -Winit-self\
+    -Winline\
+    -Wmissing-declarations\
+    -Wmissing-field-initializers\
+    -Wnested-externs\
+    -Wold-style-definition\
+    -Wno-format-nonliteral\
+    -Wredundant-decls\
+    -Wempty-body\
+    -Woverride-init\
+    -Wlogical-op\
+    -Wmissing-parameter-type\
+    -Wold-style-declaration\
+    -Wtype-limits"
+
+OPT_CFLAGS="%{optflags} $CWARNINGFLAGS"
+OPT_LDLAGS="%{__global_ldflags}"
+export OPT_CFLAGS
+export OPT_LDFLAGS
+
+make
 
 
 %install
@@ -213,6 +249,10 @@ fi
 - Add in option -th that allows one to better name generated hex files, and
   clean up the header files generated (applied github patch)
 - Added gcc to BuildRequires
+- It turns out the %%build section was incorrectly passing in OPT_CFLAGS; it
+  made the wrong assumptions about what generate/unix/Makefile.config did with
+  that value.  Added to the spec file what should happen so that a full and
+  complete set of C flags get passed in, not just the small subset that was.
 
 * Fri Feb 09 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 20180105-3
 - Escape macros in %%changelog