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CMake/Modules/FindPerlLibs.cmake
Brad King 86578eccf2 Simplify CMake per-source license notices 
Per-source copyright/license notice headers that spell out copyright holder
names and years are hard to maintain and often out-of-date or plain wrong.
Precise contributor information is already maintained automatically by the
version control tool.  Ultimately it is the receiver of a file who is
responsible for determining its licensing status, and per-source notices are
merely a convenience.  Therefore it is simpler and more accurate for
each source to have a generic notice of the license name and references to
more detailed information on copyright holders and full license terms.

Our `Copyright.txt` file now contains a list of Contributors whose names
appeared source-level copyright notices.  It also references version control
history for more precise information.  Therefore we no longer need to spell
out the list of Contributors in each source file notice.

Replace CMake per-source copyright/license notice headers with a short
description of the license and links to `Copyright.txt` and online information
available from "https://cmake.org/licensing".  The online URL also handles
cases of modules being copied out of our source into other projects, so we
can drop our notices about replacing links with full license text.

Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority
of the replacements mechanically.  Manually fix up shebang lines and trailing
newlines in a few files.  Manually update the notices in a few files that the
script does not handle.
2016-09-27 15:14:44 -04:00

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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#.rst:
# FindPerlLibs
# ------------
#
# 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
# PERL_INCLUDE_PATH = path to where perl.h is found
# PERL_LIBRARY = path to libperl
# 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
# find the perl executable
include(${CMAKE_CURRENT_LIST_DIR}/FindPerl.cmake)
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 ()
### 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 ()
### 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 ()
### 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 ${PERL_SITESEARCH_OUTPUT_VARIABLE})
file(TO_CMAKE_PATH "${PERL_SITESEARCH}" PERL_SITESEARCH)
endif ()
### 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 ${PERL_SITELIB_OUTPUT_VARIABLE})
file(TO_CMAKE_PATH "${PERL_SITELIB}" PERL_SITELIB)
endif ()
### 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 ${PERL_VENDORARCH_OUTPUT_VARIABLE})
file(TO_CMAKE_PATH "${PERL_VENDORARCH}" PERL_VENDORARCH)
endif ()
### 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 ${PERL_VENDORLIB_OUTPUT_VARIABLE})
file(TO_CMAKE_PATH "${PERL_VENDORLIB}" PERL_VENDORLIB)
endif ()
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 ()
endif ()
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 ${PERL_ARCHLIB_OUTPUT_VARIABLE})
perl_adjust_darwin_lib_variable( ARCHLIB )
file(TO_CMAKE_PATH "${PERL_ARCHLIB}" PERL_ARCHLIB)
endif ()
### 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 ${PERL_PRIVLIB_OUTPUT_VARIABLE})
perl_adjust_darwin_lib_variable( PRIVLIB )
file(TO_CMAKE_PATH "${PERL_PRIVLIB}" PERL_PRIVLIB)
endif ()
### PERL_POSSIBLE_LIBRARY_NAMES
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)
string(REGEX REPLACE "libperl='([^']+)'.*" "\\1" PERL_POSSIBLE_LIBRARY_NAMES ${PERL_LIBRARY_OUTPUT_VARIABLE})
else ()
set(PERL_POSSIBLE_LIBRARY_NAMES perl${PERL_VERSION_STRING} perl)
endif ()
### PERL_INCLUDE_PATH
find_path(PERL_INCLUDE_PATH
NAMES
perl.h
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_LIBRARY
find_library(PERL_LIBRARY
NAMES
${PERL_POSSIBLE_LIBRARY_NAMES}
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/${PERL_VERSION_STRING}/CORE
)
endif ()
# handle the QUIETLY and REQUIRED arguments and set PERLLIBS_FOUND to TRUE if
# all listed variables are TRUE
include(${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 2.8.8
set(PERL_VERSION ${PERL_VERSION_STRING})
mark_as_advanced(
PERL_INCLUDE_PATH
PERL_LIBRARY
)
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