Copy and adapt FindCairo.cmake for Pixman

CMakeModules/FindPixman.cmake

@@ -1,40 +1,148 @@
-# - Find Pixman
-# Find the Pixman libraries
+# - Try to find the PIXMAN library
+# Once done this will define
 #
-#  This module defines the following variables:
-#     PIXMAN_FOUND        - true if PIXMAN_INCLUDE_DIR & PIXMAN_LIBRARY are found
-#     PIXMAN_LIBRARIES    - Set when PIXMAN_LIBRARY is found
-#     PIXMAN_INCLUDE_DIRS - Set when PIXMAN_INCLUDE_DIR is found
-#
-#     PIXMAN_INCLUDE_DIR  - where to find pixman.h, etc.
-#     PIXMAN_LIBRARY      - the Pixman library
+#  PIXMAN_ROOT_DIR - Set this variable to the root installation of PIXMAN
 #
+# Read-Only variables:
+#  PIXMAN_FOUND - system has the PIXMAN library
+#  PIXMAN_INCLUDE_DIR - the PIXMAN include directory
+#  PIXMAN_LIBRARIES - The libraries needed to use PIXMAN
+#  PIXMAN_VERSION - This is set to $major.$minor.$revision (eg. 0.9.8)
 
 #=============================================================================
-# Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+# Copyright 2012 Dmitry Baryshnikov <polimax at mail dot ru>
+# Copyright 2017 Simon Richter <Simon.Richter at hogyros dot de>
 #
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
 #
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# 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.)
 
-find_path(PIXMAN_INCLUDE_DIR NAMES pixman.h PATH_SUFFIXES pixman-1)
+find_package(PkgConfig)
 
-find_library(PIXMAN_LIBRARY NAMES pixman-1)
+if(PKG_CONFIG_FOUND)
+    pkg_check_modules(_PIXMAN pixman-1)
+endif (PKG_CONFIG_FOUND)
 
-find_package_handle_standard_args(pixman-1 DEFAULT_MSG PIXMAN_LIBRARY PIXMAN_INCLUDE_DIR)
+SET(_PIXMAN_ROOT_HINTS
+  $ENV{PIXMAN}
+  ${PIXMAN_ROOT_DIR}
+  )
+SET(_PIXMAN_ROOT_PATHS
+  $ENV{PIXMAN}/src
+  /usr
+  /usr/local
+  )
+SET(_PIXMAN_ROOT_HINTS_AND_PATHS
+  HINTS ${_PIXMAN_ROOT_HINTS}
+  PATHS ${_PIXMAN_ROOT_PATHS}
+  )
 
-if(PIXMAN-1_FOUND)
-  set(PIXMAN_LIBRARIES ${PIXMAN_LIBRARY})
-  set(PIXMAN_INCLUDE_DIRS ${PIXMAN_INCLUDE_DIR})
+FIND_PATH(PIXMAN_INCLUDE_DIR
+  NAMES
+    pixman.h
+  HINTS
+    ${_PIXMAN_INCLUDEDIR}
+  ${_PIXMAN_ROOT_HINTS_AND_PATHS}
+  PATH_SUFFIXES
+    include
+    "include/pixman-1"
+)
+
+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(PIXMAN
+      NAMES
+        pixman-1
+      ${_PIXMAN_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "VC"
+        "lib/VC"
+    )
+
+    MARK_AS_ADVANCED(PIXMAN)
+    set( PIXMAN_LIBRARIES ${PIXMAN})
+  ELSEIF(MINGW)
+    # same player, for MingW
+    FIND_LIBRARY(PIXMAN
+      NAMES
+        pixman-1
+      ${_PIXMAN_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "lib/MinGW"
+    )
+
+    MARK_AS_ADVANCED(PIXMAN)
+    set( PIXMAN_LIBRARIES ${PIXMAN})
+  ELSE(MSVC)
+    # Not sure what to pick for -say- intel, let's use the toplevel ones and hope someone report issues:
+    FIND_LIBRARY(PIXMAN
+      NAMES
+        pixman-1
+      HINTS
+        ${_PIXMAN_LIBDIR}
+      ${_PIXMAN_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        lib
+    )
+
+    MARK_AS_ADVANCED(PIXMAN)
+    set( PIXMAN_LIBRARIES ${PIXMAN} )
+  ENDIF(MSVC)
+ELSE()
+
+  FIND_LIBRARY(PIXMAN_LIBRARY
+    NAMES
+        pixman-1
+    HINTS
+      ${_PIXMAN_LIBDIR}
+    ${_PIXMAN_ROOT_HINTS_AND_PATHS}
+    PATH_SUFFIXES
+      "lib"
+      "local/lib"
+  )
+
+  MARK_AS_ADVANCED(PIXMAN_LIBRARY)
+
+  # compat defines
+  SET(PIXMAN_LIBRARIES ${PIXMAN_LIBRARY})
+
+ENDIF()
+
+#message( STATUS "Pixman_FIND_VERSION=${Pixman_FIND_VERSION}.")
+#message( STATUS "PIXMAN_INCLUDE_DIR=${PIXMAN_INCLUDE_DIR}.")
+
+# Fetch version from pixman-version.h if a version was requested by find_package()
+if(PIXMAN_INCLUDE_DIR AND Pixman_FIND_VERSION)
+  file(READ "${PIXMAN_INCLUDE_DIR}/pixman-version.h" _PIXMAN_VERSION_H_CONTENTS)
+  string(REGEX REPLACE "^(.*\n)?#define[ \t]+PIXMAN_VERSION_MAJOR[ \t]+([0-9]+).*"
+         "\\2" PIXMAN_VERSION_MAJOR ${_PIXMAN_VERSION_H_CONTENTS})
+  string(REGEX REPLACE "^(.*\n)?#define[ \t]+PIXMAN_VERSION_MINOR[ \t]+([0-9]+).*"
+         "\\2" PIXMAN_VERSION_MINOR ${_PIXMAN_VERSION_H_CONTENTS})
+  string(REGEX REPLACE "^(.*\n)?#define[ \t]+PIXMAN_VERSION_MICRO[ \t]+([0-9]+).*"
+         "\\2" PIXMAN_VERSION_MICRO ${_PIXMAN_VERSION_H_CONTENTS})
+  set(PIXMAN_VERSION ${PIXMAN_VERSION_MAJOR}.${PIXMAN_VERSION_MINOR}.${PIXMAN_VERSION_MICRO}
+      CACHE INTERNAL "The version number for Pixman libraries")
 endif()
 
-mark_as_advanced(PIXMAN_INCLUDE_DIR PIXMAN_LIBRARY)
+include(FindPackageHandleStandardArgs)
+
+find_package_handle_standard_args(Pixman
+  REQUIRED_VARS
+    PIXMAN_LIBRARIES
+    PIXMAN_INCLUDE_DIR
+  VERSION_VAR
+    PIXMAN_VERSION
+)
+
+MARK_AS_ADVANCED(PIXMAN_INCLUDE_DIR PIXMAN_LIBRARIES)