grep: force disable weak symbols

grep/PKGBUILD

@@ -12,7 +12,7 @@
 
 pkgname=grep
 pkgver=3.0
-pkgrel=4
+pkgrel=5
 epoch=1
 pkgdesc="A string search utility"
 arch=('i686' 'x86_64')
@@ -46,6 +46,8 @@ prepare() {
 build() {
   cd ${srcdir}/${pkgname}-${pkgver}
 
+  export gl_cv_have_weak=no
+
   echo ${CHOST}
   ./configure \
       --build=${CHOST} \