graphics/lilypond: Fix building against fontforge-20141014.

Signed-off-by: Kyle Guinn <elyk03@gmail.com>

graphics/lilypond/lilypond.SlackBuild

@@ -67,6 +67,11 @@ cd $PRGNAM-$VERSION
 chown -R root:root .
 chmod -R u+w,go-w,a+rX-st .
 
+# configure does some sed-fu on `fontforge --version` and is finding a git hash
+# instead of a version/date since at least fontforge-20141014.
+# This appears to detect the fontforge build date, which should be good enough.
+patch -p1 < $CWD/patches/detect-fontforge.diff
+
 sed -i 's|GUILE_CFLAGS=.*|GUILE_CFLAGS="`pkg-config --cflags guile-1.8`"|' configure
 sed -i 's|GUILE_LDFLAGS=.*|GUILE_LDFLAGS="`pkg-config --libs guile-1.8`"|' configure
 

graphics/lilypond/patches/detect-fontforge.diff

@@ -0,0 +1,12 @@
+diff --git a/configure b/configure
+--- a/configure
++++ b/configure
+@@ -9810,7 +9810,7 @@
+ 
+     if test -z "$_ver"; then
+         ## If empty, try date [fontforge]
+-        eval _ver=\"\`("$exe" --version || "$exe" -V) 2>&1 | grep '[0-9]\{6,8\}' \
++        eval _ver=\"\`("$exe" --version || "$exe" -V) 2>&1 | grep 'libfontforge [0-9]\{6,8\}' \
+ 	    | head -n 1 \
+ 	    | sed -e 's/^[^.0-9]*//' -e 's/[^.0-9]*$//'\`\"
+     fi