ledger: fix cross-compile

I have absolutely no idea why find_path fails when cross-compiling. The
file we're looking for is bundled in the tarball and doesn't change
place when we cross-compile, and we're looking in the right place for
it.

If someone wants to fix this properly, go ahead. In the meantime, we
hardcode the result.

srcpkgs/ledger/patches/cmake_wtf.patch

@@ -0,0 +1,28 @@
+--- cmake/FindUtfcpp.cmake.old	2016-01-13 19:14:05.737426666 +0100
++++ cmake/FindUtfcpp.cmake	2016-01-13 19:13:28.952877141 +0100
+@@ -1,22 +1,8 @@
+-# - Try to find utfcpp
+-# Once done, this will define
+-#
+-#  UTFCPP_FOUND        - system has utfcpp's utf8.h
+-#  UTFCPP_PATH         - the utfcpp include directories
+-
+ include(CheckCXXSourceCompiles)
+ 
+-set(UTFCPP_FOUND FALSE)
+-
+-find_path(UTFCPP_INCLUDE_DIR
+-    NAMES utf8.h
+-    HINTS  "${UTFCPP_PATH}" "${PROJECT_SOURCE_DIR}/lib/utfcpp/v2_0/source"
+-)
+-
+-if (UTFCPP_INCLUDE_DIR)
+-  set(CMAKE_REQUIRED_INCLUDES "${UTFCPP_INCLUDE_DIR}")
+-  set(UTFCPP_FOUND TRUE)
+-endif()
++set(UTFCPP_FOUND TRUE)
++set(UTFCPP_INCLUDE_DIR "${PROJECT_SOURCE_DIR}/lib/utfcpp/v2_0/source")
++set(CMAKE_REQUIRED_INCLUDES "${UTFCPP_INCLUDE_DIR}")
+ 
+ check_cxx_source_compiles("
+ #include <string>

srcpkgs/ledger/template

@@ -1,7 +1,7 @@
 # Template file for 'ledger'
 pkgname=ledger
 version=3.1.1
-revision=1
+revision=2
 build_style=cmake
 maintainer="Dominik Honnef <dominik@honnef.co>"
 hostmakedepends="cmake"