1 files changed, 103 insertions, 0 deletions
diff --git a/CMakeScripts/UsePkgConfig.cmake b/CMakeScripts/UsePkgConfig.cmake
new file mode 100644
index 0000000..86c2425
--- /dev/null
+++ b/CMakeScripts/UsePkgConfig.cmake
@@ -0,0 +1,103 @@
+# - 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)