jbig2enc: fix build

pkgs/tools/graphics/jbig2enc/53ce5fe7e73d7ed95c9e12b52dd4984723f865fa.patch

@@ -0,0 +1,47 @@
+From 53ce5fe7e73d7ed95c9e12b52dd4984723f865fa Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Zdenko=20Podobn=C3=BD?= <zdenop@gmail.com>
+Date: Sun, 6 Apr 2014 21:25:27 +0200
+Subject: [PATCH] fix build with leptonica 1.70
+
+---
+ configure.ac |  1 +
+ src/jbig2.cc | 13 +++++++++----
+ 2 files changed, 10 insertions(+), 4 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index fe37c22..753a607 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -55,6 +55,7 @@ AC_CHECK_LIB([lept], [findFileFormatStream], [], [
+			echo "Error! Leptonica not detected."
+			exit -1
+			])
++AC_CHECK_FUNCS(expandBinaryPower2Low,,)
+ # test for function - it should detect leptonica dependecies
+
+ # Check for possible dependancies of leptonica.
+diff --git a/src/jbig2.cc b/src/jbig2.cc
+index e10f042..515c1ef 100644
+--- a/src/jbig2.cc
++++ b/src/jbig2.cc
+@@ -130,11 +130,16 @@ segment_image(PIX *pixb, PIX *piximg) {
+   // input color image, so we have to do it this way...
+   // is there a better way?
+   // PIX *pixd = pixExpandBinary(pixd4, 4);
+-  PIX *pixd = pixCreate(piximg->w, piximg->h, 1);
+-  pixCopyResolution(pixd, piximg);
+-  if (verbose) pixInfo(pixd, "mask image: ");
+-  expandBinaryPower2Low(pixd->data, pixd->w, pixd->h, pixd->wpl,
++  PIX *pixd;
++#ifdef HAVE_EXPANDBINARYPOWER2LOW
++    pixd = pixCreate(piximg->w, piximg->h, 1);
++    pixCopyResolution(pixd, piximg);
++    expandBinaryPower2Low(pixd->data, pixd->w, pixd->h, pixd->wpl,
+                         pixd4->data, pixd4->w, pixd4->h, pixd4->wpl, 4);
++#else
++    pixd = pixExpandBinaryPower2(pixd4, 4);
++#endif
++  if (verbose) pixInfo(pixd, "mask image: ");
+
+   pixDestroy(&pixd4);
+   pixDestroy(&pixsf4);

pkgs/tools/graphics/jbig2enc/default.nix

@@ -8,6 +8,11 @@
 
   propagatedBuildInputs = [ leptonica zlib libwebp giflib libjpeg libpng libtiff ];
 
+  patches = [
+    # https://github.com/agl/jbig2enc/commit/53ce5fe7e73d7ed95c9e12b52dd4984723f865fa
+    ./53ce5fe7e73d7ed95c9e12b52dd4984723f865fa.patch
+  ];
+
   # This is necessary, because the resulting library has
   # /tmp/nix-build-jbig2enc/src/.libs before /nix/store/jbig2enc/lib
   # in its rpath, which means that patchelf --shrink-rpath removes