eb1b2902b
Denys Vlasenko
2021-04-14
Subject
Makefile.flags: add a test for -lrt availability
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Makefile.flags+8 -5
| @@ -145,18 +145,21 @@ CFLAGS += --sysroot=$(CONFIG_SYSROOT) | |
| export SYSROOT=$(CONFIG_SYSROOT) | |
| endif | |
| + | # libm may be needed for dc, awk, ntpd |
| + | LDLIBS += m |
| # Android has no separate crypt library | |
| # 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;}' >crypttest.c; $(CC) $(CFLAGS) -lcrypt -o /dev/null crypttest.c >/dev/null 2>&1 && echo "y"; rm crypttest.c) |
| + | 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) $(CFLAGS) -lrt -o /dev/null bb_libtest.c >/dev/null 2>&1 && echo "y"; rm bb_libtest.c) |
| ifeq ($(CRYPT_AVAILABLE),y) | |
| - | LDLIBS += m rt crypt |
| - | else |
| - | LDLIBS += m rt |
| + | LDLIBS += crypt |
| endif | |
| - | # libm may be needed for dc, awk, ntpd |
| # librt may be needed for clock_gettime() | |
| + | ifeq ($(RT_AVAILABLE),y) |
| + | LDLIBS += rt |
| + | endif |
| # libpam may use libpthread, libdl and/or libaudit. | |
| # On some platforms that requires an explicit -lpthread, -ldl, -laudit. | |