qt5base-lts/cmake/FindWrapSystemPCRE2.cmake
Alexandru Croitor 3c52f8af9d CMake: pro2cmake: Specify library versions for 3rd party libraries
If certain 3rd party libraries have a version that's not suitable for
Qt, the configure summary should say so, rather than use them and fail
at build time.

With the current situation, we have to duplicate the version
information from the configure.json files in helper.py, by assigning
the version number as an extra find_package variable.

Rerunning configurejson2cmake then embeds this version info into the
qt_find_package calls in configure.cmake.

Some of the Find modules are rewritten to take the  specified version
into account when looking for the libraries.
This involves moving around the code for creating a target, after
calling find_package_handle_standard_args() so we know if a good
enough version was found.

Task-number: QTBUG-82917
Change-Id: I139748d8090e0630cda413362760034dc3483e11
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-08-10 11:56:54 +02:00

54 lines
1.7 KiB
CMake

if(TARGET WrapSystemPCRE2::WrapSystemPCRE2)
set(WrapSystemPCRE2_FOUND TRUE)
return()
endif()
set(WrapSystemPCRE2_REQUIRED_VARS __pcre2_found)
find_package(PCRE2 ${${CMAKE_FIND_PACKAGE_NAME}_FIND_VERSION} CONFIG QUIET)
set(__pcre2_target_name "PCRE2::pcre2-16")
if(PCRE2_FOUND AND TARGET "${__pcre2_target_name}")
# Hunter case.
set(__pcre2_found TRUE)
if(PCRE2_VERSION)
set(WrapSystemPCRE2_VERSION "${PCRE2_VERSION}")
endif()
endif()
if(NOT __pcre2_found)
list(PREPEND WrapSystemPCRE2_REQUIRED_VARS PCRE2_LIBRARIES PCRE2_INCLUDE_DIRS)
find_package(PkgConfig QUIET)
pkg_check_modules(PC_PCRE2 QUIET libpcre2-16)
find_path(PCRE2_INCLUDE_DIRS
NAMES pcre2.h
HINTS ${PC_PCRE2_INCLUDEDIR})
find_library(PCRE2_LIBRARIES
NAMES pcre2-16
HINTS ${PC_PCRE2_LIBDIR})
if(PC_PCRE2_VERSION)
set(WrapSystemPCRE2_VERSION "${PC_PCRE2_VERSION}")
endif()
if (PCRE2_LIBRARIES AND PCRE2_INCLUDE_DIRS)
set(__pcre2_found TRUE)
endif()
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(WrapSystemPCRE2
REQUIRED_VARS ${WrapSystemPCRE2_REQUIRED_VARS}
VERSION_VAR WrapSystemPCRE2_VERSION)
if(WrapSystemPCRE2_FOUND)
add_library(WrapSystemPCRE2::WrapSystemPCRE2 INTERFACE IMPORTED)
if(TARGET "${__pcre2_target_name}")
target_link_libraries(WrapSystemPCRE2::WrapSystemPCRE2 INTERFACE "${__pcre2_target_name}")
else()
target_link_libraries(WrapSystemPCRE2::WrapSystemPCRE2 INTERFACE ${PCRE2_LIBRARIES})
target_include_directories(WrapSystemPCRE2::WrapSystemPCRE2 INTERFACE ${PCRE2_INCLUDE_DIRS})
endif()
endif()
unset(__pcre2_target_name)
unset(__pcre2_found)