add arch/generic include fallback to build rules

this sets the stage for the first phase of the bits deduplication.
bits headers which are identical for "most" archs will be moved to
arch/generic/bits.

diff --git a/Makefile b/Makefile
index de30a6076e38c07e09a8ea622962e89e06936d56..7c3dda4b5a69b79a06e2401dd9d6bf2641b15e53 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -40,7 +40,7 @@ CFLAGS_AUTO = -Os -pipe
 CFLAGS_C99FSE = -std=c99 -ffreestanding -nostdinc 
 
 CFLAGS_ALL = $(CFLAGS_C99FSE)
-CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I$(srcdir)/arch/$(ARCH) -Iobj/src/internal -I$(srcdir)/src/internal -Iobj/include -I$(srcdir)/include
+CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I$(srcdir)/arch/$(ARCH) -I$(srcdir)/arch/generic -Iobj/src/internal -I$(srcdir)/src/internal -Iobj/include -I$(srcdir)/include
 CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS_AUTO) $(CFLAGS)
 
 LDFLAGS_ALL = $(LDFLAGS_AUTO) $(LDFLAGS)
@@ -50,8 +50,9 @@ RANLIB  = $(CROSS_COMPILE)ranlib
 INSTALL = $(srcdir)/tools/install.sh
 
 ARCH_INCLUDES = $(wildcard $(srcdir)/arch/$(ARCH)/bits/*.h)
+GENERIC_INCLUDES = $(wildcard $(srcdir)/arch/generic/bits/*.h)
 INCLUDES = $(wildcard $(srcdir)/include/*.h $(srcdir)/include/*/*.h)
-ALL_INCLUDES = $(sort $(INCLUDES:$(srcdir)/%=%) $(GENH:obj/%=%) $(ARCH_INCLUDES:$(srcdir)/arch/$(ARCH)/%=include/%))
+ALL_INCLUDES = $(sort $(INCLUDES:$(srcdir)/%=%) $(GENH:obj/%=%) $(ARCH_INCLUDES:$(srcdir)/arch/$(ARCH)/%=include/%) $(GENERIC_INCLUDES:$(srcdir)/arch/generic/%=include/%))
 
 EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl
 EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a)
@@ -202,6 +203,9 @@ $(DESTDIR)$(libdir)/%: lib/%
 $(DESTDIR)$(includedir)/bits/%: $(srcdir)/arch/$(ARCH)/bits/%
        $(INSTALL) -D -m 644 $< $@
 
+$(DESTDIR)$(includedir)/bits/%: $(srcdir)/arch/generic/bits/%
+       $(INSTALL) -D -m 644 $< $@
+
 $(DESTDIR)$(includedir)/bits/%: obj/include/bits/%
        $(INSTALL) -D -m 644 $< $@
 

diff --git a/configure b/configure
index 41ef9df7a2fb26227c913af8fa0318f751b295ca..a296f8ab0a10e3b9fdb831a112668ed0d94e5e3e 100755 (executable)
--- a/configure
+++ b/configure
@@ -651,8 +651,9 @@ echo '#include <float.h>' > "$tmpc"
 echo '#if LDBL_MANT_DIG == 53' >> "$tmpc"
 echo 'typedef char ldcheck[9-(int)sizeof(long double)];' >> "$tmpc"
 echo '#endif' >> "$tmpc"
-if $CC $CFLAGS_C99FSE -I$srcdir/arch/$ARCH -I$srcdir/include $CPPFLAGS $CFLAGS \
-  -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+if $CC $CFLAGS_C99FSE \
+  -I$srcdir/arch/$ARCH -I$srcdir/arch/generic -I$srcdir/include \
+  $CPPFLAGS $CFLAGS -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
 printf "yes\n"
 else
 printf "no\n"