From 3c185d781ac7a7031397c6651baf046d900efc3a Mon Sep 17 00:00:00 2001
From: su_v <suv-sf@users.sourceforge.net>
Date: Fri, 1 May 2015 05:52:17 +0200
Subject: cmake: Fix osx-related issues with cmake-build

Add new helper function to retrive pkg-config variables in Cmake;
use paths defined as environment variables for builds on
OS X (useful if MacPorts is not installed into default prefix);
check backend of GTK2 on OS X in main cmake file (x11|quartz).

(bzr r14080)
---
 CMakeScripts/DefineDependsandFlags.cmake | 30 +++++++++++++++++++++++++++++-
 CMakeScripts/HelperFunctions.cmake       | 19 +++++++++++++++++++
 2 files changed, 48 insertions(+), 1 deletion(-)
 create mode 100644 CMakeScripts/HelperFunctions.cmake

(limited to 'CMakeScripts')

diff --git a/CMakeScripts/DefineDependsandFlags.cmake b/CMakeScripts/DefineDependsandFlags.cmake
index 637e48d6a..b0e5aa8b2 100644
--- a/CMakeScripts/DefineDependsandFlags.cmake
+++ b/CMakeScripts/DefineDependsandFlags.cmake
@@ -24,6 +24,31 @@ if (WIN32)
 	list(APPEND INKSCAPE_LIBS "-lpangoft2-1.0.dll")  # FIXME
 	list(APPEND INKSCAPE_LIBS "-lpangowin32-1.0.dll")  # FIXME
 	list(APPEND INKSCAPE_LIBS "-lgthread-2.0.dll")  # FIXME
+elseif(APPLE)
+	if(DEFINED ENV{CMAKE_PREFIX_PATH})
+		# Adding the library search path explicitly seems not required
+		# if MacPorts is installed in default prefix ('/opt/local') - 
+		# Cmake then can rely on the hard-coded paths in its modules.
+		# Only prepend search path if $CMAKE_PREFIX_PATH is defined:
+		list(APPEND INKSCAPE_LIBS "-L$ENV{CMAKE_PREFIX_PATH}/lib")  # FIXME
+		# TODO: verify whether linking the next two libs explicitly is always
+	  	# required, or only if MacPorts is installed in custom prefix:
+		list(APPEND INKSCAPE_LIBS "-liconv")  # FIXME
+		list(APPEND INKSCAPE_LIBS "-lintl")  # FIXME
+	endif()
+	list(APPEND INKSCAPE_LIBS "-lpangocairo-1.0")  # FIXME
+	list(APPEND INKSCAPE_LIBS "-lpangoft2-1.0")  # FIXME
+	list(APPEND INKSCAPE_LIBS "-lfontconfig")  # FIXME
+	# GTK+ backend
+	if(${GTK+_2.0_TARGET} MATCHES "x11")
+		# only link X11 if using X11 backend of GTK2
+		list(APPEND INKSCAPE_LIBS "-lX11")  # FIXME
+	elseif(${GTK+_2.0_TARGET} MATCHES "quartz")
+		# TODO: gtk-mac-integration (currently only useful for osxmenu branch)
+		# 1) add configure option (ON/OFF) for gtk-mac-integration
+		# 2) add checks (GTK+ backend must be "quartz")
+		# 3) link relevant lib(s)
+	endif()
 else()
 	list(APPEND INKSCAPE_LIBS "-ldl")  # FIXME
 	list(APPEND INKSCAPE_LIBS "-lpangocairo-1.0")  # FIXME
@@ -32,7 +57,10 @@ else()
 	list(APPEND INKSCAPE_LIBS "-lX11")  # FIXME
 endif()
 
-list(APPEND INKSCAPE_LIBS "-lgomp")  # FIXME
+if(NOT APPLE)
+	# FIXME: should depend on availability of OpenMP support (see below) (?)
+	list(APPEND INKSCAPE_LIBS "-lgomp")  # FIXME
+endif()
 list(APPEND INKSCAPE_LIBS "-lgslcblas")  # FIXME
 
 if(WITH_GNOME_VFS)
diff --git a/CMakeScripts/HelperFunctions.cmake b/CMakeScripts/HelperFunctions.cmake
new file mode 100644
index 000000000..0e6fff51a
--- /dev/null
+++ b/CMakeScripts/HelperFunctions.cmake
@@ -0,0 +1,19 @@
+# pkg_check_variable() - a function to retrieve pkg-config variables in CMake
+#
+# source: http://bloerg.net/2015/03/06/pkg-config-variables-in-cmake.html
+
+find_package(PkgConfig REQUIRED)
+
+function(pkg_check_variable _pkg _name)
+    string(TOUPPER ${_pkg} _pkg_upper)
+    string(TOUPPER ${_name} _name_upper)
+    string(REPLACE "-" "_" _pkg_upper ${_pkg_upper})
+    string(REPLACE "-" "_" _name_upper ${_name_upper})
+    set(_output_name "${_pkg_upper}_${_name_upper}")
+
+    execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --variable=${_name} ${_pkg}
+                    OUTPUT_VARIABLE _pkg_result
+                    OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+    set("${_output_name}" "${_pkg_result}" CACHE STRING "pkg-config variable ${_name} of ${_pkg}")
+endfunction()
-- 
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