The net library is configurable on vxworks7. Pick the library
to include in link closures in accordance with the availability
of a revealing header file, using the recently introduced
if-exist-then-else spec builtin function.
Tested on a mix of gcc-9 and gcc-10 based builds for Vxworks7r2,
and sanity checked that a powerpc-vxworks build passes for languages=c,c++
with mainline sources.
Committing to mainline.
Olivier
2021-10-23 Douglas Rupp <r...@adacore.com>
gcc/
* config/vxworks.h (VXWORKS_NET_LIBS_RTP): Use -lrtnet if
rtnetStackLib.h is available, fallback to -lnet otherwise.
--- a/gcc/config/vxworks.h
+++ b/gcc/config/vxworks.h
@@ -90,7 +90,7 @@ along with GCC; see the file COPYING3. If not see
#define VXWORKS_SYSCALL_LIBS_RTP
#if TARGET_VXWORKS7
-#define VXWORKS_NET_LIBS_RTP "-lnet"
+#define VXWORKS_NET_LIBS_RTP "-l%:if-exists-then-else(%:getenv(VSB_DIR
/usr/h/public/rtnetStackLib.h) rtnet net)"
#else
#define VXWORKS_NET_LIBS_RTP "-lnet -ldsi"
#endif
--
2.17.1
