configure: Make the Unifont FONT_SOURCE configurable with --with-unifont=FILE

Font might be located in different location, the default font might
not be available on all systems or other font might be preferred.

Signed-off-by: Mads Kiilerich <mads@kiilerich.com>
Signed-off-by: Richard Marko <srk@48.io>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

diff --git a/configure.ac b/configure.ac
index da9c8d560c88c8ad2ded5501f7068d8fab4a66fd..7b8c3698cd465326a8f9bee74a0b1c6c04431cb1 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1832,21 +1832,28 @@ fi
 
 AC_SUBST([DJVU_FONT_SOURCE])
 
-FONT_SOURCE=
-
-for ext in pcf pcf.gz bdf bdf.gz ttf ttf.gz; do
-  for dir in . /usr/src /usr/share/fonts/X11/misc /usr/share/fonts/unifont /usr/share/fonts/uni /usr/share/fonts/truetype/unifont /usr/share/fonts/misc; do
-    if test -f "$dir/unifont.$ext"; then
-      md5="$(md5sum "$dir/unifont.$ext"|awk '{ print $1; }')"
-      # PCF and BDF from version 6.3 isn't hanled properly by libfreetype.
-      if test "$md5" = 0a54834d2788c83886a3e1785a6a1e61 || test "$md5" = 28f2565c7a41d8d407e2551159385edb || test "$md5" = dae5e588461b3b92b87b6ffee734f936 || test "$md5" = 4a3d687aa5bb329ed05f4263a1016791 ; then
-        continue
+AC_ARG_WITH([unifont],
+            AS_HELP_STRING([--with-unifont=FILE],
+                           [set the unifont source [[guessed]]]))
+
+if test "x$with_unifont" = x; then
+  # search in well-known directories
+  for ext in pcf pcf.gz bdf bdf.gz ttf ttf.gz; do
+    for dir in . /usr/src /usr/share/fonts/X11/misc /usr/share/fonts/unifont /usr/share/fonts/uni /usr/share/fonts/truetype/unifont /usr/share/fonts/misc; do
+      if test -f "$dir/unifont.$ext"; then
+        md5="$(md5sum "$dir/unifont.$ext"|awk '{ print $1; }')"
+        # PCF and BDF from version 6.3 isn't hanled properly by libfreetype.
+        if test "$md5" = 0a54834d2788c83886a3e1785a6a1e61 || test "$md5" = 28f2565c7a41d8d407e2551159385edb || test "$md5" = dae5e588461b3b92b87b6ffee734f936 || test "$md5" = 4a3d687aa5bb329ed05f4263a1016791 ; then
+          continue
+        fi
+        FONT_SOURCE="$dir/unifont.$ext"
+        break 2
       fi
-      FONT_SOURCE="$dir/unifont.$ext"
-      break 2
-    fi
+    done
   done
-done
+else
+  FONT_SOURCE="$with_unifont"
+fi
 
 if test x"$enable_build_grub_mkfont" = xno ; then
   FONT_SOURCE=