restund: infer SYSROOT from cross cpp, same fix as for "re"

SVN-Revision: 29800

diff --git a/net/restund/Makefile b/net/restund/Makefile
index 4c5d97271e4f0104e1ae5bc84be8a76ca5541013..551eac0ff36cc77fab6bd5ba9bd47706bdfc5486 100644 (file)
--- a/net/restund/Makefile
+++ b/net/restund/Makefile
@@ -51,7 +51,7 @@ define Build/Compile
                CC="$(TARGET_CC)" \
                EXTRA_CFLAGS="$(TARGET_CFLAGS)" \
                DESTDIR="$(PKG_INSTALL_DIR)" \
-               SYSROOT="$(TOOLCHAIN_DIR)" \
+               SYSROOT="$$$$(echo '#include <pthread.h>' | $(TARGET_CROSS)cpp -x c | sed -ne 's,^# [0-9]* \"\(.*\)/include/pthread\.h\".*,\1,p' | head -n1)" \
                SYSROOT_ALT="$(STAGING_DIR)/usr" \
                RELEASE=1 \
                CROSS_COMPILE="$(TARGET_CROSS)" \