extra/libsndfile: more friendly prepare patching

1 files changed, 8 insertions, 3 deletions

diff --git a/extra/libsndfile/PKGBUILD b/extra/libsndfile/PKGBUILD
index 00af685f..a49ae415 100644
--- a/extra/libsndfile/PKGBUILD
+++ b/extra/libsndfile/PKGBUILD
@@ -5,8 +5,13 @@ source_i686=('libsndfile-1.0.31-no-sse2.patch')
 sha512sums_i686=('3088df360db3e8a86e9586597594db0a2c633504bb2453ff17e9bd062ce29a8773ec35426dfda9391eac72cccb2ca12dbab11915f9c4313283b858f756a85f0b')
 if [ "$CARCH" == 'i686' ] || [ "$CARCH" == 'i486' ]; then
   eval "$(
-    prepare() {
-      patch -p1 -i "$srcdir/libsndfile-1.0.31-no-sse2.patch"
-    }
+    {
+      declare -f prepare || \
+      printf 'prepare() {\n}\n'
+    } \
+    | sed '
+      $i cd "${srcdir}/${pkgbase}-${pkgver}" \
+         patch -p1 -i "$srcdir/libsndfile-1.0.31-no-sse2.patch"
+    '
   )"
 fi