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FindPkgConfig: support version selection of pkg-config itself

This commit is contained in:
Rolf Eike Beer 2012-02-18 11:57:38 +01:00
parent bfbb575086
commit 27501155c7
1 changed files with 16 additions and 5 deletions
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21
Modules/FindPkgConfig.cmake
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@ -13,14 +13,17 @@
# When the 'QUIET' argument is set, no status messages will be printed.
#
# It sets the following variables:
# PKG_CONFIG_FOUND ... true if pkg-config works on the system
# PKG_CONFIG_EXECUTABLE ... pathname of the pkg-config program
# <PREFIX>_FOUND ... set to 1 if module(s) exist
# PKG_CONFIG_FOUND ... true if pkg-config works on the system
# PKG_CONFIG_EXECUTABLE ... pathname of the pkg-config program
# PKG_CONFIG_VERSION_STRING ... the version of the pkg-config program found
# (since CMake 2.8.8)
# PKG_CONFIG_FOUND ... if pkg-config executable was found
#
# For the following variables two sets of values exist; first one is the
# common one and has the given PREFIX. The second set contains flags
# which are given out when pkgconfig was called with the '--static'
# option.
# <XPREFIX>_FOUND ... set to 1 if module(s) exist
# <XPREFIX>_LIBRARIES ... only the libraries (w/o the '-l')
# <XPREFIX>_LIBRARY_DIRS ... the paths of the libraries (w/o the '-L')
# <XPREFIX>_LDFLAGS ... all required linker flags
@ -89,9 +92,17 @@ set(PKG_CONFIG_VERSION 1)
find_program(PKG_CONFIG_EXECUTABLE NAMES pkg-config DOC "pkg-config executable")
mark_as_advanced(PKG_CONFIG_EXECUTABLE)
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
find_package_handle_standard_args(PkgConfig DEFAULT_MSG PKG_CONFIG_EXECUTABLE)
if (PKG_CONFIG_EXECUTABLE)
execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --version
OUTPUT_VARIABLE PKG_CONFIG_VERSION_STRING
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
endif (PKG_CONFIG_EXECUTABLE)
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
find_package_handle_standard_args(PkgConfig
REQUIRED_VARS PKG_CONFIG_EXECUTABLE
VERSION_VAR PKG_CONFIG_VERSION_STRING)
# Unsets the given variables
macro(_pkgconfig_unset var)