CMake/Modules/FindPerlLibs.cmake

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# - Find Perl libraries
# This module finds if PERL is installed and determines where the include files
# and libraries are. It also determines what the name of the library is. This
# code sets the following variables:
#
# PERLLIBS_FOUND = True if perl.h & libperl were found
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# PERL_INCLUDE_PATH = path to where perl.h is found
# PERL_LIBRARY = path to libperl
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# PERL_EXECUTABLE = full path to the perl binary
#
# The minimum required version of Perl can be specified using the
# standard syntax, e.g. FIND_PACKAGE(PerlLibs 6.0)
#
# The following variables are also available if needed
# (introduced after CMake 2.6.4)
#
# PERL_SITESEARCH = path to the sitesearch install dir
# PERL_SITELIB = path to the sitelib install directory
# PERL_VENDORARCH = path to the vendor arch install directory
# PERL_VENDORLIB = path to the vendor lib install directory
# PERL_ARCHLIB = path to the arch lib install directory
# PERL_PRIVLIB = path to the priv lib install directory
# PERL_EXTRA_C_FLAGS = Compilation flags used to build perl
#
#=============================================================================
# Copyright 2004-2009 Kitware, Inc.
# Copyright 2008 Andreas Schneider <asn@cryptomilk.org>
#
# 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.)
# find the perl executable
include(FindPerl)
if (PERL_EXECUTABLE)
### PERL_PREFIX
execute_process(
COMMAND
${PERL_EXECUTABLE} -V:prefix
OUTPUT_VARIABLE
PERL_PREFIX_OUTPUT_VARIABLE
RESULT_VARIABLE
PERL_PREFIX_RESULT_VARIABLE
)
if (NOT PERL_PREFIX_RESULT_VARIABLE)
string(REGEX REPLACE "prefix='([^']+)'.*" "\\1" PERL_PREFIX ${PERL_PREFIX_OUTPUT_VARIABLE})
endif (NOT PERL_PREFIX_RESULT_VARIABLE)
### PERL_ARCHNAME
execute_process(
COMMAND
${PERL_EXECUTABLE} -V:archname
OUTPUT_VARIABLE
PERL_ARCHNAME_OUTPUT_VARIABLE
RESULT_VARIABLE
PERL_ARCHNAME_RESULT_VARIABLE
)
if (NOT PERL_ARCHNAME_RESULT_VARIABLE)
string(REGEX REPLACE "archname='([^']+)'.*" "\\1" PERL_ARCHNAME ${PERL_ARCHNAME_OUTPUT_VARIABLE})
endif (NOT PERL_ARCHNAME_RESULT_VARIABLE)
### PERL_EXTRA_C_FLAGS
execute_process(
COMMAND
${PERL_EXECUTABLE} -V:cppflags
OUTPUT_VARIABLE
PERL_CPPFLAGS_OUTPUT_VARIABLE
RESULT_VARIABLE
PERL_CPPFLAGS_RESULT_VARIABLE
)
if (NOT PERL_CPPFLAGS_RESULT_VARIABLE)
string(REGEX REPLACE "cppflags='([^']+)'.*" "\\1" PERL_EXTRA_C_FLAGS ${PERL_CPPFLAGS_OUTPUT_VARIABLE})
endif (NOT PERL_CPPFLAGS_RESULT_VARIABLE)
### PERL_SITESEARCH
execute_process(
COMMAND
${PERL_EXECUTABLE} -V:installsitesearch
OUTPUT_VARIABLE
PERL_SITESEARCH_OUTPUT_VARIABLE
RESULT_VARIABLE
PERL_SITESEARCH_RESULT_VARIABLE
)
if (NOT PERL_SITESEARCH_RESULT_VARIABLE)
string(REGEX REPLACE "install[a-z]+='([^']+)'.*" "\\1" PERL_SITESEARCH ${PERL_SITESEARCH_OUTPUT_VARIABLE})
endif (NOT PERL_SITESEARCH_RESULT_VARIABLE)
### PERL_SITELIB
execute_process(
COMMAND
${PERL_EXECUTABLE} -V:installsitelib
OUTPUT_VARIABLE
PERL_SITELIB_OUTPUT_VARIABLE
RESULT_VARIABLE
PERL_SITELIB_RESULT_VARIABLE
)
if (NOT PERL_SITELIB_RESULT_VARIABLE)
string(REGEX REPLACE "install[a-z]+='([^']+)'.*" "\\1" PERL_SITELIB ${PERL_SITELIB_OUTPUT_VARIABLE})
endif (NOT PERL_SITELIB_RESULT_VARIABLE)
### PERL_VENDORARCH
execute_process(
COMMAND
${PERL_EXECUTABLE} -V:installvendorarch
OUTPUT_VARIABLE
PERL_VENDORARCH_OUTPUT_VARIABLE
RESULT_VARIABLE
PERL_VENDORARCH_RESULT_VARIABLE
)
if (NOT PERL_VENDORARCH_RESULT_VARIABLE)
string(REGEX REPLACE "install[a-z]+='([^']+)'.*" "\\1" PERL_VENDORARCH ${PERL_VENDORARCH_OUTPUT_VARIABLE})
endif (NOT PERL_VENDORARCH_RESULT_VARIABLE)
### PERL_VENDORLIB
execute_process(
COMMAND
${PERL_EXECUTABLE} -V:installvendorlib
OUTPUT_VARIABLE
PERL_VENDORLIB_OUTPUT_VARIABLE
RESULT_VARIABLE
PERL_VENDORLIB_RESULT_VARIABLE
)
if (NOT PERL_VENDORLIB_RESULT_VARIABLE)
string(REGEX REPLACE "install[a-z]+='([^']+)'.*" "\\1" PERL_VENDORLIB ${PERL_VENDORLIB_OUTPUT_VARIABLE})
endif (NOT PERL_VENDORLIB_RESULT_VARIABLE)
macro(perl_adjust_darwin_lib_variable varname)
string( TOUPPER PERL_${varname} FINDPERL_VARNAME )
string( TOLOWER install${varname} PERL_VARNAME )
if (NOT PERL_MINUSV_OUTPUT_VARIABLE)
execute_process(
COMMAND
${PERL_EXECUTABLE} -V
OUTPUT_VARIABLE
PERL_MINUSV_OUTPUT_VARIABLE
RESULT_VARIABLE
PERL_MINUSV_RESULT_VARIABLE
)
endif()
if (NOT PERL_MINUSV_RESULT_VARIABLE)
string(REGEX MATCH "(${PERL_VARNAME}.*points? to the Updates directory)"
PERL_NEEDS_ADJUSTMENT ${PERL_MINUSV_OUTPUT_VARIABLE})
if (PERL_NEEDS_ADJUSTMENT)
string(REGEX REPLACE "(.*)/Updates/" "/System/\\1/" ${FINDPERL_VARNAME} ${${FINDPERL_VARNAME}})
endif (PERL_NEEDS_ADJUSTMENT)
endif (NOT PERL_MINUSV_RESULT_VARIABLE)
endmacro()
### PERL_ARCHLIB
execute_process(
COMMAND
${PERL_EXECUTABLE} -V:installarchlib
OUTPUT_VARIABLE
PERL_ARCHLIB_OUTPUT_VARIABLE
RESULT_VARIABLE
PERL_ARCHLIB_RESULT_VARIABLE
)
if (NOT PERL_ARCHLIB_RESULT_VARIABLE)
string(REGEX REPLACE "install[a-z]+='([^']+)'.*" "\\1" PERL_ARCHLIB ${PERL_ARCHLIB_OUTPUT_VARIABLE})
perl_adjust_darwin_lib_variable( ARCHLIB )
endif (NOT PERL_ARCHLIB_RESULT_VARIABLE)
### PERL_PRIVLIB
execute_process(
COMMAND
${PERL_EXECUTABLE} -V:installprivlib
OUTPUT_VARIABLE
PERL_PRIVLIB_OUTPUT_VARIABLE
RESULT_VARIABLE
PERL_PRIVLIB_RESULT_VARIABLE
)
if (NOT PERL_PRIVLIB_RESULT_VARIABLE)
string(REGEX REPLACE "install[a-z]+='([^']+)'.*" "\\1" PERL_PRIVLIB ${PERL_PRIVLIB_OUTPUT_VARIABLE})
perl_adjust_darwin_lib_variable( PRIVLIB )
endif (NOT PERL_PRIVLIB_RESULT_VARIABLE)
### PERL_POSSIBLE_INCLUDE_PATHS
set(PERL_POSSIBLE_INCLUDE_PATHS
${PERL_ARCHLIB}/CORE
/usr/lib/perl5/${PERL_VERSION_STRING}/${PERL_ARCHNAME}/CORE
/usr/lib/perl/${PERL_VERSION_STRING}/${PERL_ARCHNAME}/CORE
/usr/lib/perl5/${PERL_VERSION_STRING}/CORE
/usr/lib/perl/${PERL_VERSION_STRING}/CORE
)
### PERL_POSSIBLE_LIB_PATHS
set(PERL_POSSIBLE_LIB_PATHS
${PERL_ARCHLIB}/CORE
/usr/lib/perl5/${PERL_VERSION_STRING}/${PERL_ARCHNAME}/CORE
/usr/lib/perl/${PERL_VERSION_STRING}/${PERL_ARCHNAME}/CORE
/usr/lib/perl5/${PERL_VERSION_STRING}/CORE
/usr/lib/perl/${PERL_VERSION_STRING}/CORE
)
### PERL_POSSIBLE_LIBRARY_NAME
execute_process(
COMMAND
${PERL_EXECUTABLE} -V:libperl
OUTPUT_VARIABLE
PERL_LIBRARY_OUTPUT_VARIABLE
RESULT_VARIABLE
PERL_LIBRARY_RESULT_VARIABLE
)
if (NOT PERL_LIBRARY_RESULT_VARIABLE)
foreach(_perl_lib_path ${PERL_POSSIBLE_LIB_PATHS})
string(REGEX REPLACE "libperl='([^']+)'" "\\1" PERL_LIBRARY_OUTPUT_VARIABLE ${PERL_LIBRARY_OUTPUT_VARIABLE})
set(PERL_POSSIBLE_LIBRARY_NAME ${PERL_POSSIBLE_LIBRARY_NAME} "${_perl_lib_path}/${PERL_LIBRARY_OUTPUT_VARIABLE}")
endforeach(_perl_lib_path ${PERL_POSSIBLE_LIB_PATHS})
endif (NOT PERL_LIBRARY_RESULT_VARIABLE)
### PERL_INCLUDE_PATH
find_path(PERL_INCLUDE_PATH
NAMES
perl.h
PATHS
${PERL_POSSIBLE_INCLUDE_PATHS}
)
### PERL_LIBRARY
find_library(PERL_LIBRARY
NAMES
${PERL_POSSIBLE_LIBRARY_NAME}
perl${PERL_VERSION_STRING}
perl
PATHS
${PERL_POSSIBLE_LIB_PATHS}
)
endif (PERL_EXECUTABLE)
# handle the QUIETLY and REQUIRED arguments and set PERLLIBS_FOUND to TRUE if
# all listed variables are TRUE
Modules: Include builtin FindPackageHandleStandardArgs directly The FindPackageHandleStandardArgs module was originally created outside of CMake. It was added for CMake 2.6.0 by commit e118a627 (add a macro FIND_PACKAGE_HANDLE_STANDARD_ARGS..., 2007-07-18). However, it also proliferated into a number of other projects that at the time required only CMake 2.4 and thus could not depend on CMake to provide the module. CMake's own find modules started using the module in commit b5f656e0 (use the new FIND_PACKAGE_HANDLE_STANDARD_ARGS in some of the FindXXX modules..., 2007-07-18). Then commit d358cf5c (add 2nd, more powerful mode to find_package_handle_standard_args, 2010-07-29) added a new feature to the interface of the module that was fully optional and backward compatible with all existing users of the module. Later commit 5f183caa (FindZLIB: use the FPHSA version mode, 2010-08-04) and others shortly thereafter started using the new interface in CMake's own find modules. This change was also backward compatible because it was only an implementation detail within each module. Unforutnately these changes introduced a problem for projects that still have an old copy of FindPackageHandleStandardArgs in CMAKE_MODULE_PATH. When any such project uses one of CMake's builtin find modules the line include(FindPackageHandleStandardArgs) loads the copy from the project which does not have the new interface! Then the including find module tries to use the new interface with the old module and fails. Whether this breakage can be considered a backward incompatible change in CMake is debatable. The situation is analagous to copying a standard library header from one version of a compiler into a project and then observing problems when the next version of the compiler reports errors in its other headers that depend on its new version of the original header. Nevertheless it is a change to CMake that causes problems for projects that worked with previous versions. This problem was discovered during the 2.8.3 release candidate cycle. It is an instance of a more general problem with projects that provide their own versions of CMake modules when other CMake modules depend on them. At the time we resolved this instance of the problem with commit b0118402 (Use absolute path to FindPackageHandleStandardArgs.cmake everywhere, 2010-09-28) for the 2.8.3 release. In order to address the more general problem we introduced policy CMP0017 in commit db44848f (Prefer files from CMAKE_ROOT when including from CMAKE_ROOT, 2010-11-17). That change was followed by commit ce28737c (Remove usage of CMAKE_CURRENT_LIST_DIR now that we have CMP0017, 2010-12-20) which reverted the original workaround in favor of using the policy. However, existing project releases do not set the policy behavior to NEW and therefore still exhibit the problem. We introduced in commit a364daf1 (Allow users to specify defaults for unset policies, 2011-01-03) an option for users to build existing projects by adding -DCMAKE_POLICY_DEFAULT_CMP0017=NEW to the command line. Unfortunately this solution still does not allow such projects to build out of the box, and there is no good way to suggest the use of the new option. The only remaining solution to keep existing projects that exhibit this problem building is to restore the change originally made in commit b0118402 (Use absolute path to FindPackageHandleStandardArgs.cmake everywhere, 2010-09-28). This also avoids policy CMP0017 warnings for this particular instance of the problem the policy addresses.
2011-01-20 18:56:49 +03:00
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
find_package_handle_standard_args(PerlLibs REQUIRED_VARS PERL_LIBRARY PERL_INCLUDE_PATH
VERSION_VAR PERL_VERSION_STRING)
# Introduced after CMake 2.6.4 to bring module into compliance
set(PERL_INCLUDE_DIR ${PERL_INCLUDE_PATH})
set(PERL_INCLUDE_DIRS ${PERL_INCLUDE_PATH})
set(PERL_LIBRARIES ${PERL_LIBRARY})
# For backward compatibility with CMake before 2.8.7
set(PERL_VERSION ${PERL_VERSION_STRING})
mark_as_advanced(
PERL_INCLUDE_PATH
PERL_LIBRARY
)