collect cflags and libs values

Author: dxma

Makefile.PL

@@ -2,6 +2,7 @@ use ExtUtils::MakeMaker;
 use strict;
 use warnings;
 
+# ignore system library, force a build from source code
 BEGIN { $ENV{ALIEN_INSTALL_TYPE} = 'share'; }
 
 use File::Spec;

alienfile

@@ -44,4 +44,16 @@ share {
       '%{make} install',
    ];
    plugin 'Gather::IsolateDynamic';
+   # save correct package settings
+   # for now there is no good way to retrieve them from cmake
+   gather sub {
+      my ( $build ) = @_;
+      my $prefix = $build->runtime_prop->{prefix};
+      $build->runtime_prop->{cflags}        = "-I$prefix/include";
+      $build->runtime_prop->{cflags_static} = "-I$prefix/include";
+      my $extra_libs = ' -lm';
+      $extra_libs .= ' -lshlwapi' if $^O eq 'MSWin32';
+      $build->runtime_prop->{libs}          = "-L$prefix/lib -ljq -lonig". $extra_libs;
+      $build->runtime_prop->{libs_static}   = "-L$prefix/lib -ljq -lonig". $extra_libs;
+   };
 };

jq/CMakeLists.txt

@@ -438,11 +438,40 @@ endif()
 if(ENABLE_DOCS)
 endif()
 
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/jq.pc.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/jq.pc @ONLY)
 
 # TODO: support full packaging
 install_library(jq)
 install_executable(jq_bin)
 install_header(src/jv.h src/jq.h)
 install_data(AUTHORS COPYING NEWS README)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/jq.pc DESTINATION lib/pkgconfig)
+
+# export cmake configurations
+install(TARGETS jq onig EXPORT jqTargets)
+install(EXPORT jqTargets FILE jqTargets.cmake DESTINATION lib/cmake/jq)
+include(CMakePackageConfigHelpers)
+# generate the config file that includes the exports
+configure_package_config_file(
+  ${CMAKE_CURRENT_SOURCE_DIR}/Config.cmake.in
+  ${CMAKE_CURRENT_BINARY_DIR}/jqConfig.cmake
+  INSTALL_DESTINATION lib/cmake/jq
+  NO_SET_AND_CHECK_MACRO
+  NO_CHECK_REQUIRED_COMPONENTS_MACRO
+)
+# generate the version file for the config file
+write_basic_package_version_file(
+  ${CMAKE_CURRENT_BINARY_DIR}/jqConfigVersion.cmake
+  VERSION ${PACKAGE_VERSION}
+  COMPATIBILITY AnyNewerVersion
+)
+# install the configuration file
+install(FILES
+  ${CMAKE_CURRENT_BINARY_DIR}/jqConfig.cmake
+  ${CMAKE_CURRENT_BINARY_DIR}/jqConfigVersion.cmake
+  DESTINATION lib/cmake/jq
+)
+
+# information in legacy pkgconfig is wrong/missing
+#configure_file(${CMAKE_CURRENT_SOURCE_DIR}/jq.pc.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/jq.pc @ONLY)
+#install(FILES ${CMAKE_CURRENT_BINARY_DIR}/jq.pc DESTINATION lib/pkgconfig)
+
+#export(EXPORT jqTargets FILE ${CMAKE_CURRENT_BINARY_DIR}/jqTargets.cmake)

jq/jq.pc.cmake.in

@@ -9,5 +9,5 @@ Name: jq
 Description: lightweight and flexible command-line JSON processor
 Version: @PACKAGE_VERSION@
 Requires:
-Libs: -L${libdir} -ljq -lonig
+Libs: -L${libdir} -ljq -lonig -lm
 Cflags: -I${includedir}

lib/Alien/LibJQ.pm

@@ -4,7 +4,7 @@ use warnings;
 use base qw/Alien::Base/;
 use vars qw/$VERSION/;
 
-$VERSION = '0.01';
+$VERSION = '0.02';
 
 =head1 NAME