From b0f9e0297898f42006ddb700fdf4a7e9db8e8608 Mon Sep 17 00:00:00 2001
From: "Joshua L. Blocher" <verbalshadow@gmail.com>
Date: Thu, 27 Mar 2008 21:33:21 +0000
Subject: Cmake Build system - Initial commit.

(bzr r5206)
---
 CMakeScripts/UsePkgConfig.cmake | 119 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 CMakeScripts/UsePkgConfig.cmake

(limited to 'CMakeScripts/UsePkgConfig.cmake')

diff --git a/CMakeScripts/UsePkgConfig.cmake b/CMakeScripts/UsePkgConfig.cmake
new file mode 100644
index 000000000..2de721238
--- /dev/null
+++ b/CMakeScripts/UsePkgConfig.cmake
@@ -0,0 +1,119 @@
+# - pkg-config module for CMake
+#
+# Defines the following macros:
+#
+#  PKGCONFIG_FOUND(package found)
+#  PKGCONFIG(package includedir libdir linkflags cflags)
+#  PKGCONFIG_VERSION(package version)
+#  PKGCONFIG_DEFINITION(package definition)
+
+# Calling PKGCONFIG_FOUND will fill into the argument the value of the package search's result
+# e.g. PKGCONFIG_FOUND(libart-2.0 LIBART_FOUND)
+#
+# Calling PKGCONFIG_VERSION will fill the desired version into the argument,
+# e.g. PKGCONFIG_VERSION(libart-2.0 LIBART_VERSION)
+# Calling PKGCONFIG will fill the desired information into the 4 given arguments,
+# e.g. PKGCONFIG(libart-2.0 LIBART_INCLUDE_DIR LIBART_LINK_DIR LIBART_LINK_FLAGS LIBART_CFLAGS)
+# if pkg-config was NOT found or the specified software package doesn't exist, the
+# variable will be empty when the function returns, otherwise they will contain the respective information
+#
+# Calling PKGCONFIG_VERSION will fill the desired version into the argument,
+# e.g. PKGCONFIG_VERSION(libart-2.0 LIBART_VERSION)
+#
+# Calling PKGCONFIG_DEFINITION will fill the definition (e.g -D_REENTRANT) into the argument,
+# e.g. PKGCONFIG_DEFINITION(libart-2.0 LIBART_DEFINITION)
+
+FIND_PROGRAM(PKGCONFIG_EXECUTABLE NAMES pkg-config PATHS /usr/local/bin )
+
+MACRO(STRIP_NEWLINES _string_var)
+  STRING(REGEX REPLACE "[\n\r]+" "" ${_string_var} ${${_string_var}})
+ENDMACRO(STRIP_NEWLINES _string_var)
+
+MACRO(PKGCONFIG_FOUND _package _found)
+  # reset the variable at the beginning
+  SET(${_found})
+
+# if pkg-config has been found
+  IF(PKGCONFIG_EXECUTABLE)
+
+    EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --print-errors --exists RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull )
+    
+    IF(${_pkgconfigDevNull})
+      MESSAGE(STATUS "${_pkgconfigDevNull}")
+    ENDIF(${_pkgconfigDevNull})
+    
+    IF(NOT _return_VALUE)
+      SET(${_found} "TRUE")
+    ENDIF(NOT _return_VALUE)
+  ENDIF(PKGCONFIG_EXECUTABLE)
+
+ENDMACRO(PKGCONFIG_FOUND _found)
+
+MACRO(PKGCONFIG _package _include_DIR _link_DIR _link_FLAGS _cflags)
+# reset the variables at the beginning
+  SET(${_include_DIR})
+  SET(${_link_DIR})
+  SET(${_link_FLAGS})
+  SET(${_cflags})
+
+  # if pkg-config has been found
+  IF(PKGCONFIG_EXECUTABLE)
+
+    EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --exists RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull )
+
+    # and if the package of interest also exists for pkg-config, then get the information
+    IF(NOT _return_VALUE)
+
+      EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --variable=includedir OUTPUT_VARIABLE ${_include_DIR} )
+
+      EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --variable=libdir OUTPUT_VARIABLE ${_link_DIR} )
+
+      EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --libs OUTPUT_VARIABLE ${_link_FLAGS} )
+
+      EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --cflags OUTPUT_VARIABLE ${_cflags} )
+
+      STRIP_NEWLINES(${_cflags})
+
+    ENDIF(NOT _return_VALUE)
+
+  ENDIF(PKGCONFIG_EXECUTABLE)
+
+ENDMACRO(PKGCONFIG _include_DIR _link_DIR _link_FLAGS _cflags)
+
+MACRO(PKGCONFIG_VERSION _package _version)
+# reset the variables at the beginning
+  SET(${_version})
+
+# if pkg-config has been found
+  IF(PKGCONFIG_EXECUTABLE)
+    EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS --print-errors ${_package} --exists RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull )
+
+# and if the package of interest also exists for pkg-config, then get the information
+    IF(NOT _return_VALUE)
+      EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS --print-errors ${_package} --modversion OUTPUT_VARIABLE ${_version} )
+    ENDIF(NOT _return_VALUE)
+
+  ENDIF(PKGCONFIG_EXECUTABLE)
+
+ENDMACRO(PKGCONFIG_VERSION _package _version)
+
+MARK_AS_ADVANCED(PKGCONFIG_EXECUTABLE)
+
+MACRO(PKGCONFIG_DEFINITION _package _definition)
+# reset the variables at the beginning
+  SET(${_definition})
+
+# if pkg-config has been found
+  IF(PKGCONFIG_EXECUTABLE)
+    EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS --print-errors ${_package} --exists RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull )
+
+# and if the package of interest also exists for pkg-config, then get the information
+    IF(NOT _return_VALUE)
+      EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS --print-errors ${_package} --cflags-only-other OUTPUT_VARIABLE ${_definition} )
+    ENDIF(NOT _return_VALUE)
+
+  ENDIF(PKGCONFIG_EXECUTABLE)
+
+ENDMACRO(PKGCONFIG_DEFINITION _package _definition)
+
+MARK_AS_ADVANCED(PKGCONFIG_EXECUTABLE)
-- 
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