keep user-provided CFLAGS/LDFLAGS separate from those added by configure
this way, overriding these variables on the make command line (or just
re-passing the originally-passed values when invoking make) won't
suppress use of the flags added by configure.
diff --git a/Makefile b/Makefile
index b2226fa..2b21015 100644
--- a/Makefile
+++ b/Makefile
@@ -23,18 +23,22 @@
GENH_INT = src/internal/version.h
IMPH = src/internal/stdio_impl.h src/internal/pthread_impl.h src/internal/libc.h
-LDFLAGS =
+LDFLAGS =
+LDFLAGS_AUTO =
LIBCC = -lgcc
CPPFLAGS =
-CFLAGS = -Os -pipe
+CFLAGS =
+CFLAGS_AUTO = -Os -pipe
CFLAGS_C99FSE = -std=c99 -ffreestanding -nostdinc
CFLAGS_ALL = $(CFLAGS_C99FSE)
CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I./arch/$(ARCH) -I./src/internal -I./include
-CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS)
+CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS_AUTO) $(CFLAGS)
CFLAGS_ALL_STATIC = $(CFLAGS_ALL)
CFLAGS_ALL_SHARED = $(CFLAGS_ALL) -fPIC -DSHARED
+LDFLAGS_ALL = $(LDFLAGS_AUTO) $(LDFLAGS)
+
AR = $(CROSS_COMPILE)ar
RANLIB = $(CROSS_COMPILE)ranlib
INSTALL = ./tools/install.sh
@@ -146,7 +150,7 @@
$(CC) $(CFLAGS_ALL_SHARED) -c -o $@ $<
lib/libc.so: $(LOBJS)
- $(CC) $(CFLAGS_ALL_SHARED) $(LDFLAGS) -nostdlib -shared \
+ $(CC) $(CFLAGS_ALL_SHARED) $(LDFLAGS_ALL) -nostdlib -shared \
-Wl,-e,_dlstart -Wl,-Bsymbolic-functions \
-o $@ $(LOBJS) $(LIBCC)