component/tesseract: Fix compilation errors for gcc 4.7 / debian 7.1

component/tesseract/0001-SlapOS-Compatibility-for-gcc-4.7-debian-7.1.patch

+From 6712eff6cd1b600156d90be6cea394a53c2152a5 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=A9rome=20Perrin?= <jerome@nexedi.com>
+Date: Fri, 17 Aug 2018 05:34:58 +0200
+Subject: [PATCH] [SlapOS] Compatibility for gcc 4.7 / debian 7.1
+
+This was not really investigated, it seems to be related to how the
+standard changed in
+https://sourceware.org/bugzilla/show_bug.cgi?id=15366
+---
+ src/ccutil/host.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/ccutil/host.h b/src/ccutil/host.h
+index 989ccf1b..af592f30 100644
+--- a/src/ccutil/host.h
++++ b/src/ccutil/host.h
+@@ -28,6 +28,7 @@
+ #endif
+ 
+ #include <cinttypes>  // PRId32, ...
++#define __STDC_LIMIT_MACROS
+ #include <cstdint>    // int32_t, ...
+ 
+ // definitions of portable data types (numbers and characters)
+-- 
+2.11.0
+

component/tesseract/buildout.cfg

@@ -28,6 +28,11 @@ pre-configure =
   autoreconf -ivf
   autoconf -Wno-portability
 
+patch-options =
+  -p1
+patches =
+  ${:_profile_base_location_}/0001-SlapOS-Compatibility-for-gcc-4.7-debian-7.1.patch#96caf3fe08b55fa2a7bfb0f7607bc21e
+
 configure-options =
   --disable-static
   --datarootdir=${tesseract-traineddata:location}