[git commit] Makefile.flags: use all cflags for crypt and rt checks

[Denys Vlasenko]

commit: https://git.busybox.net/busybox/commit/?id=9b678807198611308cfd8b10427f9e08c62f7bec
branch: https://git.busybox.net/busybox/commit/?id=refs/heads/master

To check if libcrypt and librt are available, we check if we can
compile and link a simple test program.

These checks do not match the actual linking if CONFIG_STATIC is enabled.
For CONFIG_STATIC, CFLAGS_busybox is set to -static. The checks don't use
CFLAGS_busybox and detect a shared libcrypt or librt. If we link busybox
later and we have no static libcrypt or librt, linking will fail.

Update the libcrypt and librt checks to use CFLAGS_busybox.

Signed-off-by: Martin Kaiser <martin at kaiser.cx>
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
 Makefile.flags | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile.flags b/Makefile.flags
index 667481983..c34356230 100644
--- a/Makefile.flags
+++ b/Makefile.flags
@@ -151,8 +151,8 @@ LDLIBS += m
 # gcc-4.2.1 fails if we try to feed C source on stdin:
 #  echo 'int main(void){return 0;}' | $(CC) $(CFLAGS) -lcrypt -o /dev/null -xc -
 # fall back to using a temp file:
-CRYPT_AVAILABLE := $(shell echo 'int main(void){return 0;}' >bb_libtest.c; $(CC) $(CFLAGS) -lcrypt -o /dev/null bb_libtest.c >/dev/null 2>&1 && echo "y"; rm bb_libtest.c)
-RT_AVAILABLE    := $(shell echo 'int main(void){return 0;}' >bb_libtest.c; $(CC) $(CFLAGS) -lrt    -o /dev/null bb_libtest.c >/dev/null 2>&1 && echo "y"; rm bb_libtest.c)
+CRYPT_AVAILABLE := $(shell echo 'int main(void){return 0;}' >bb_libtest.c; $(CC) $(CFLAGS) $(CFLAGS_busybox) -lcrypt -o /dev/null bb_libtest.c >/dev/null 2>&1 && echo "y"; rm bb_libtest.c)
+RT_AVAILABLE    := $(shell echo 'int main(void){return 0;}' >bb_libtest.c; $(CC) $(CFLAGS) $(CFLAGS_busybox) -lrt    -o /dev/null bb_libtest.c >/dev/null 2>&1 && echo "y"; rm bb_libtest.c)
 ifeq ($(CRYPT_AVAILABLE),y)
 LDLIBS += crypt
 endif