#"))
endif
-ifneq ($(CONFIG_CROSS_COMPILER_PREFIX),"arm-linux-androideabi-")
+# Note: both "" (string consisting of two quote chars) and empty string
+# are possible, and should be skipped below.
+ifneq ($(subst "",,$(CONFIG_SYSROOT)),)
+CFLAGS += --sysroot=$(CONFIG_SYSROOT)
+export SYSROOT=$(CONFIG_SYSROOT)
+endif
+
+# 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) $(CFLAGS) -lcrypt -o /dev/null crypttest.c >/dev/null 2>&1 && echo "y"; rm crypttest.c)
+ifeq ($(CRYPT_AVAILABLE),y)
LDLIBS += m crypt
else
-# Android libc has no crypt. TODO: make a generic CONFIG_LINK_WITH_CRYPT option?
LDLIBS += m
endif
-ifneq ($(CONFIG_SYSROOT),)
-CFLAGS += --sysroot=$(CONFIG_SYSROOT)
-export SYSROOT=$(CONFIG_SYSROOT)
-endif
-
ifeq ($(CONFIG_PAM),y)
# libpam uses libpthread, so for static builds busybox must be linked to
# libpthread. On some platforms that requires an explicit -lpthread, so