Add -lgflags into LD_FLAGS when gflags is detected and --with-gflags isn't…

Add -lgflags into LD_FLAGS when gflags is detected and --with-gflags isn't specified. Thanks kzk for this patch!


git-svn-id: https://google-glog.googlecode.com/svn/trunk@49 eb4d4688-79bd-11dd-afb4-1d65580434c0

configure

@@ -23944,6 +23944,9 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_LIB_GFLAGS 1
 _ACEOF
 
+  if test x"$GFLAGS_LIBS" = x""; then
+    GFLAGS_LIBS="-lgflags"
+  fi
 else
   GFLAGS_CFLAGS=
   GFLAGS_LIBS=

configure.ac

@@ -110,6 +110,9 @@ AC_ARG_WITH(gflags, AS_HELP_STRING[--with-gflags=GFLAGS_DIR],
 AC_CHECK_LIB(gflags, main, ac_cv_have_libgflags=1, ac_cv_have_libgflags=0)
 if test x"$ac_cv_have_libgflags" = x"1"; then
   AC_DEFINE(HAVE_LIB_GFLAGS, 1, [define if you have google gflags library])
+  if test x"$GFLAGS_LIBS" = x""; then
+    GFLAGS_LIBS="-lgflags"
+  fi
 else
   GFLAGS_CFLAGS=
   GFLAGS_LIBS=