Better libcairo dependencies handling though cmake

CMakeLists.txt

@@ -73,6 +73,7 @@ include(CMakePackageConfigHelpers)
 include(InstallFreeRDPMan)
 include(GetGitRevisionDescription)
 include(SetFreeRDPCMakeInstallDir)
+include(FindCairo)
 
 # Soname versioning
 set(BUILD_NUMBER 0)

cmake/FindCairo.cmake

@@ -1,24 +1,166 @@
-find_package(PkgConfig QUIET)
+# - Try to find the CAIRO library
-pkg_check_modules(CAIRO QUIET libcairo)
+# Once done this will define
+#
+#  CAIRO_ROOT_DIR - Set this variable to the root installation of CAIRO
+#
+# Read-Only variables:
+#  CAIRO_FOUND - system has the CAIRO library
+#  CAIRO_INCLUDE_DIR - the CAIRO include directory
+#  CAIRO_LIBRARIES - The libraries needed to use CAIRO
+#  CAIRO_VERSION - This is set to $major.$minor.$revision (eg. 0.9.8)
 
-find_path(CAIRO_INCLUDE_DIR
+#=============================================================================
-		  NAMES cairo.h
+# Copyright 2012 Dmitry Baryshnikov <polimax at mail dot ru>
-			PATHS ${CAIRO_INCLUDE_DIRS}
+#
-		  PATH_SUFFIXES cairo
+# Distributed under the OSI-approved BSD License (the "License");
-		 )
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
 
-# Finally the library itself
+find_package(PkgConfig)
-find_library(CAIRO_LIBRARY
+
-			 NAMES cairo
+if(PKG_CONFIG_FOUND)
-			 PATHS ${CAIRO_LIBRARY_DIRS}
+    pkg_check_modules(_CAIRO cairo)
-			)
+endif (PKG_CONFIG_FOUND)
-mark_as_advanced(CAIRO_INCLUDE_DIR)
+
-mark_as_advanced(CAIRO_LIBRARY)
+SET(_CAIRO_ROOT_HINTS
+  $ENV{CAIRO}
+  ${CAIRO_ROOT_DIR}
+  )
+SET(_CAIRO_ROOT_PATHS
+  $ENV{CAIRO}/src
+  /usr
+  /usr/local
+  )
+SET(_CAIRO_ROOT_HINTS_AND_PATHS
+  HINTS ${_CAIRO_ROOT_HINTS}
+  PATHS ${_CAIRO_ROOT_PATHS}
+  )
+
+FIND_PATH(CAIRO_INCLUDE_DIR
+  NAMES
+    cairo.h
+  HINTS
+    ${_CAIRO_INCLUDEDIR}
+  ${_CAIRO_ROOT_HINTS_AND_PATHS}
+  PATH_SUFFIXES
+    include
+    "include/cairo"
+)
+
+IF(NOT PKGCONFIG_FOUND AND WIN32 AND NOT CYGWIN)
+  # MINGW should go here too
+  IF(MSVC)
+    # Implementation details:
+    # We are using the libraries located in the VC subdir instead of the parent directory eventhough :
+    FIND_LIBRARY(CAIRO_DEBUG
+      NAMES
+        cairod
+      ${_CAIRO_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "VC"
+        "lib/VC"
+    )
+
+    FIND_LIBRARY(CAIRO_RELEASE
+      NAMES
+        cairo
+      ${_CAIRO_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "VC"
+        "lib/VC"
+    )
+
+    if( CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE )
+        if(NOT CAIRO_DEBUG)
+            set(CAIRO_DEBUG ${CAIRO_RELEASE})
+        endif(NOT CAIRO_DEBUG)
+      set( CAIRO_LIBRARIES
+        optimized ${CAIRO_RELEASE} debug ${CAIRO_DEBUG}
+        )
+    else()
+      set( CAIRO_LIBRARIES ${CAIRO_RELEASE})
+    endif()
+    MARK_AS_ADVANCED(CAIRO_DEBUG CAIRO_RELEASE)
+  ELSEIF(MINGW)
+    # same player, for MingW
+    FIND_LIBRARY(CAIRO
+      NAMES
+        cairo
+      ${_CAIRO_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "lib/MinGW"
+    )
+
+    MARK_AS_ADVANCED(CAIRO)
+    set( CAIRO_LIBRARIES ${CAIRO})
+  ELSE(MSVC)
+    # Not sure what to pick for -say- intel, let's use the toplevel ones and hope someone report issues:
+    FIND_LIBRARY(CAIRO
+      NAMES
+        cairo
+      HINTS
+        ${_CAIRO_LIBDIR}
+      ${_CAIRO_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        lib
+    )
+
+    MARK_AS_ADVANCED(CAIRO)
+    set( CAIRO_LIBRARIES ${CAIRO} )
+  ENDIF(MSVC)
+ELSE()
+
+  FIND_LIBRARY(CAIRO_LIBRARY
+    NAMES
+        cairo
+    HINTS
+      ${_CAIRO_LIBDIR}
+    ${_CAIRO_ROOT_HINTS_AND_PATHS}
+    PATH_SUFFIXES
+      "lib"
+      "local/lib"
+  )
+
+  MARK_AS_ADVANCED(CAIRO_LIBRARY)
+
+  # compat defines
+  SET(CAIRO_LIBRARIES ${CAIRO_LIBRARY})
+
+ENDIF()
+
+#message( STATUS "Cairo_FIND_VERSION=${Cairo_FIND_VERSION}.")
+#message( STATUS "CAIRO_INCLUDE_DIR=${CAIRO_INCLUDE_DIR}.")
+
+# Fetch version from cairo-version.h if a version was requested by find_package()
+if(CAIRO_INCLUDE_DIR AND Cairo_FIND_VERSION)
+  file(READ "${CAIRO_INCLUDE_DIR}/cairo-version.h" _CAIRO_VERSION_H_CONTENTS)
+  string(REGEX REPLACE "^(.*\n)?#define[ \t]+CAIRO_VERSION_MAJOR[ \t]+([0-9]+).*"
+         "\\2" CAIRO_VERSION_MAJOR ${_CAIRO_VERSION_H_CONTENTS})
+  string(REGEX REPLACE "^(.*\n)?#define[ \t]+CAIRO_VERSION_MINOR[ \t]+([0-9]+).*"
+         "\\2" CAIRO_VERSION_MINOR ${_CAIRO_VERSION_H_CONTENTS})
+  string(REGEX REPLACE "^(.*\n)?#define[ \t]+CAIRO_VERSION_MICRO[ \t]+([0-9]+).*"
+         "\\2" CAIRO_VERSION_MICRO ${_CAIRO_VERSION_H_CONTENTS})
+  set(CAIRO_VERSION ${CAIRO_VERSION_MAJOR}.${CAIRO_VERSION_MINOR}.${CAIRO_VERSION_MICRO}
+      CACHE INTERNAL "The version number for Cairo libraries")
+endif()
 
 include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(CAIRO
+
-	REQUIRED_VARS
+find_package_handle_standard_args(Cairo
-		CAIRO_LIBRARY CAIRO_INCLUDE_DIR
+  REQUIRED_VARS
-	VERSION_VAR
+    CAIRO_LIBRARIES
-		CAIRO_VERSION_STRING
+    CAIRO_INCLUDE_DIR
-	HANDLE_COMPONENTS)
+  VERSION_VAR
+    CAIRO_VERSION
+)
+
+MARK_AS_ADVANCED(CAIRO_INCLUDE_DIR CAIRO_LIBRARIES)