klish: fixup sigignore support

Added _GNU_SOURCE for uClibc-ng compatibility. _XOPEN_SOURCE does not
seem to be enough.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

utils/klish/Makefile

@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=klish
 PKG_VERSION:=2.2.0
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=http://libcode.org/attachments/download/77/
@@ -54,6 +54,8 @@ endef
 
 CONFIGURE_ARGS += --with-libxml2
 
+TARGET_CFLAGS += -D_GNU_SOURCE
+
 define Package/klish/install
 	$(INSTALL_DIR) $(1)/usr/bin
 	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/clish $(1)/usr/bin/

utils/klish/patches/010-shell_execute_fix.patch

@@ -6,12 +6,10 @@
  
 +#if defined(__UCLIBC__) && !defined(__UCLIBC_HAS_OBSOLETE_BSD_SIGNAL__)
  /* Empty signal handler to ignore signal but don't use SIG_IGN. */
--static void sigignore(int signo)
-+static int sigignore(int signo)
+ static void sigignore(int signo)
  {
  	signo = signo; /* Happy compiler */
--	return;
-+	return 0;
+ 	return;
  }
 +#endif