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gnss-sdr/cmake/Modules/FindGFLAGS.cmake
Carles Fernandez 7308745f05
Apply more concise file header format
Re-license CMake scripts with BSD-3-Clause
2020-12-30 13:35:06 +01:00

173 lines
5.1 KiB
CMake

# GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
# This file is part of GNSS-SDR.
#
# SPDX-FileCopyrightText: 2011-2020 C. Fernandez-Prades cfernandez(at)cttc.es
# SPDX-License-Identifier: BSD-3-Clause
# - Try to find GFlags
#
# The following CMake and environment variables are optionally searched
# for defaults:
# GFLAGS_ROOT: Base directory where all GFlags components are found
#
# The following are set after configuration is done:
# GFlags_FOUND
# GFlags_INCLUDE_DIRS
# GFlags_LIBS
# GFlags_LIBRARY_DIRS
#
# Provides the following imported target:
# Gflags::gflags
#
if(NOT COMMAND feature_summary)
include(FeatureSummary)
endif()
if(NOT GFLAGS_ROOT)
set(GFLAGS_ROOT_USER_PROVIDED /usr/local)
else()
set(GFLAGS_ROOT_USER_PROVIDED ${GFLAGS_ROOT})
endif()
if(DEFINED ENV{GFLAGS_ROOT})
set(GFLAGS_ROOT_USER_PROVIDED
${GFLAGS_ROOT_USER_PROVIDED}
$ENV{GFLAGS_ROOT}
)
endif()
if(APPLE)
find_path(GFlags_ROOT_DIR
libgflags.dylib
PATHS
${GFLAGS_ROOT_USER_PROVIDED}/lib
/usr/local/lib
/opt/local/lib
)
else()
find_path(GFlags_ROOT_DIR
libgflags.so
PATHS
${GFLAGS_ROOT_USER_PROVIDED}/lib
${GFLAGS_ROOT_USER_PROVIDED}/lib64
/usr/lib
/usr/lib64
/usr/lib/x86_64-linux-gnu
/usr/lib/i386-linux-gnu
/usr/lib/arm-linux-gnueabihf
/usr/lib/arm-linux-gnueabi
/usr/lib/aarch64-linux-gnu
/usr/lib/mipsel-linux-gnu
/usr/lib/mips-linux-gnu
/usr/lib/mips64el-linux-gnuabi64
/usr/lib/powerpc-linux-gnu
/usr/lib/powerpc64-linux-gnu
/usr/lib/powerpc64le-linux-gnu
/usr/lib/powerpc-linux-gnuspe
/usr/lib/hppa-linux-gnu
/usr/lib/s390x-linux-gnu
/usr/lib/i386-gnu
/usr/lib/hppa-linux-gnu
/usr/lib/x86_64-kfreebsd-gnu
/usr/lib/i386-kfreebsd-gnu
/usr/lib/m68k-linux-gnu
/usr/lib/sh4-linux-gnu
/usr/lib/sparc64-linux-gnu
/usr/lib/x86_64-linux-gnux32
/usr/lib/alpha-linux-gnu
/usr/lib/riscv64-linux-gnu
/usr/local/lib
/usr/local/lib64
/opt/local/lib
)
endif()
if(GFlags_ROOT_DIR)
# We are testing only a couple of files in the include directories
find_path(GFlags_INCLUDE_DIRS
gflags/gflags.h
PATHS
${GFlags_ROOT_DIR}/src
${GFLAGS_ROOT_USER_PROVIDED}/include
/usr/include
/usr/local/include
/opt/local/include
)
# Find the libraries
set(GFlags_LIBRARY_DIRS ${GFlags_ROOT_DIR})
find_library(GFlags_lib gflags ${GFlags_LIBRARY_DIRS})
if(EXISTS ${GFlags_INCLUDE_DIRS}/gflags/gflags_gflags.h)
set(GFLAGS_GREATER_20 TRUE)
else()
set(GFLAGS_GREATER_20 FALSE)
endif()
message(STATUS "gflags library found at ${GFlags_lib}")
set(GFlags_LIBS ${GFlags_lib})
set(GFlags_FOUND true)
mark_as_advanced(GFlags_INCLUDE_DIRS)
else()
message(STATUS "Cannot find gflags")
set(GFlags_FOUND false)
endif()
if(GFlags_LIBS AND GFlags_INCLUDE_DIRS)
if(NOT PACKAGE_VERSION)
set(PACKAGE_VERSION "")
endif()
set(OLD_PACKAGE_VERSION ${PACKAGE_VERSION})
unset(PACKAGE_VERSION)
list(GET GFlags_LIBS 0 FIRST_DIR)
get_filename_component(GFlags_LIBS_DIR ${FIRST_DIR} DIRECTORY)
if(EXISTS ${GFlags_LIBS_DIR}/cmake/gflags/gflags-config-version.cmake)
include(${GFlags_LIBS_DIR}/cmake/gflags/gflags-config-version.cmake)
endif()
if(NOT PACKAGE_VERSION)
if(EXISTS ${GFlags_INCLUDE_DIRS}/google/gflags.h)
set(PACKAGE_VERSION "2.0")
endif()
endif()
if(PACKAGE_VERSION)
set(GFLAGS_VERSION ${PACKAGE_VERSION})
set_package_properties(GFLAGS PROPERTIES
DESCRIPTION "C++ library that implements commandline flags processing (found: v${GFLAGS_VERSION})"
)
else()
set_package_properties(GFLAGS PROPERTIES
DESCRIPTION "C++ library that implements commandline flags processing"
)
endif()
set(PACKAGE_VERSION ${OLD_PACKAGE_VERSION})
else()
set_package_properties(GFLAGS PROPERTIES
DESCRIPTION "C++ library that implements commandline flags processing"
)
endif()
set_package_properties(GFLAGS PROPERTIES
URL "https://github.com/gflags/gflags"
)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(GFLAGS DEFAULT_MSG GFlags_LIBS GFlags_INCLUDE_DIRS)
if(GFLAGS_VERSION)
if(${GFLAGS_VERSION} VERSION_LESS "${GNSSSDR_GFLAGS_MIN_VERSION}")
set(GFLAGS_FOUND FALSE)
unset(GFlags_LIBS CACHE)
unset(GFlags_INCLUDE_DIRS CACHE)
endif()
endif()
if(GFLAGS_FOUND AND NOT TARGET Gflags::gflags)
add_library(Gflags::gflags SHARED IMPORTED)
set_target_properties(Gflags::gflags PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
IMPORTED_LOCATION "${GFlags_LIBS}"
INTERFACE_INCLUDE_DIRECTORIES "${GFlags_INCLUDE_DIRS}"
INTERFACE_LINK_LIBRARIES "${GFlags_LIBS}"
)
endif()