Bug 377344 - Configure should check for PR_STATIC_ASSERT support when building with system NSPR. Patch by Mook <mook.moz+mozbz@gmail.com>, r=benjamin.

configure.in

@@ -3832,7 +3832,17 @@ if test -n "$_USE_SYSTEM_NSPR"; then
     AM_PATH_NSPR(4.0.0, [MOZ_NATIVE_NSPR=1], [MOZ_NATIVE_NSPR=])
 fi
 
-if test -z "$MOZ_NATIVE_NSPR"; then
+if test -n "$MOZ_NATIVE_NSPR"; then
+    _SAVE_CFLAGS=$CFLAGS
+    CFLAGS="$CFLAGS $NSPR_CFLAGS"
+    AC_TRY_COMPILE([#include "prlog.h"],
+                [#ifndef PR_STATIC_ASSERT
+                 #error PR_STATIC_ASSERT not defined
+                 #endif],
+                [MOZ_NATIVE_NSPR=1],
+                AC_MSG_ERROR([system NSPR does not support PR_STATIC_ASSERT]))
+    CFLAGS=$_SAVE_CFLAGS
+else
     NSPR_CFLAGS='`$(DEPTH)/nsprpub/config/nspr-config --prefix=$(LIBXUL_DIST) --includedir=$(LIBXUL_DIST)/include/nspr --cflags`'
     # explicitly set libs for Visual Age C++ for OS/2
     if test "$OS_ARCH" = "OS2" -a "$VACPP" = "yes"; then