kbuild: check if we can link gettext not just compile

cygwin provides the header file but the lib file needs
to be added manually. A generic fix is to check if
we can compile and link a program that uses gettext()
and if it fails fall back to NO_NLS.

International users of cygwin may have to specify
HOST_LOADLIBES := "-lintl" on the make command line.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/scripts/kconfig/check.sh b/scripts/kconfig/check.sh
new file mode 100755
index 000000000000..fa59cbf9d62c
--- /dev/null
+++ b/scripts/kconfig/check.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+# Needed for systems without gettext
+$* -xc -o /dev/null - > /dev/null 2>&1 << EOF
+#include <libintl.h>
+int main()
+{
+        gettext("");
+        return 0;
+}
+EOF
+if [ ! "$?" -eq "0"  ]; then
+        echo -DKBUILD_NO_NLS;
+fi
+