I'm running into the following problem when doing a version bump to ppp-2.4.5.
The build happens as:
i486-openwrt-linux-gnu-gcc -Os -pipe -march=k6-2 -fno-align-functions
-fno-align-loops -fno-align-jumps -fno-align-labels -fhonour-copts
-I/home/philipp/openwrt/staging_dir/target-i386_eglibc-2.8/usr/include
-I/home/philipp/openwrt/staging_dir/target-i386_eglibc-2.8/include
-I/home/philipp/openwrt/staging_dir/toolchain-i386_gcc-4.4.4_eglibc-2.8/usr/include
-I/home/philipp/openwrt/staging_dir/toolchain-i386_gcc-4.4.4_eglibc-2.8/include
-O2 -g -I. -I../.. -I../../../include -fPIC -c -o pppol2tp.o pppol2tp.c
but this fails because I end up picking up the wrong version of
linux/if_pppol2tp.h.
Reason is that the ppp-2.4.5 makefile specifies (as patched):
%.so: %.o
$(CC) $(CFLAGS) $(CFLAGS_) -o $@ -shared $^ $(LDFLAGS) $(LDFLAGS_)
$(LIBS) $(LIBS_)
so $(CFLAGS) is the TARGET_CFLAGS passed in for cross-compilation (including
-I$(STAGING_DIR)/mumble), and $(CFLAGS_) is the flags that the PPP project
requires, including -I../../../include ... so unfortunately the wrong order.
The makefile was done that way so that the project could override platform
values (like -D and -U, -O, etc)... but unfortunately with -I flags they are
handled in the order specified.
This problem has probably come up before. Anyone have a clean fix?
Should the $(STAGING_DIR) directories be passed as -isystem instead of -I?
Thanks,
-Philip
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