Merge pull request #140 from schuhschuh/enh-#117-gflags-subproject-support
These changes improve the CMakeLists.txt of the gflags project to make CMake variables configurable via command-line option -D or super-project settings. Moreover, gflags related variables are only added to the CMake cache when the gflags project is configured as a standalone project. When it is a subproject (cf. #117), the super-project is responsible for setting the configuration variables.
This change set also changes the names of the (exported) target names to gflags[_nothreads]_(static|shared) and the CMake (package) configuration variable names to start with an uppercase prefix "GFLAGS_".
diff --git a/.gitignore b/.gitignore
index 4281522..6429423 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,4 @@
/test/gflags_unittest_main.cc
/test/gflags_unittest-main.cc
/packages/
+CMakeLists.txt.user
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e479f51..68f9ea3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,75 @@
+## CMake configuration file of gflags project
+##
+## This CMakeLists.txt defines some gflags specific configuration variables
+## using the "gflags_define" utility macro. The default values of these variables
+## can be overridden either on the CMake command-line using the -D option of
+## the cmake command or in a super-project which includes the gflags source
+## tree by setting the GFLAGS_<varname> CMake variables before adding the
+## gflags source directory via CMake's "add_subdirectory" command. Only when
+## the non-cached variable GFLAGS_IS_SUBPROJECT has a value equivalent to FALSE,
+## these configuration variables are added to the CMake cache so they can be
+## edited in the CMake GUI. By default, GFLAGS_IS_SUBPROJECT is set to TRUE when
+## the CMAKE_SOURCE_DIR is not identical to the directory of this CMakeLists.txt
+## file, i.e., the top-level directory of the gflags project source tree.
+##
+## When this project is a subproject (GFLAGS_IS_SUBPROJECT is TRUE), the default
+## settings are such that only the static single-threaded library is built without
+## installation of the gflags files. The "gflags" target is in this case an ALIAS
+## library target for the "gflags_nothreads_static" library target. Targets which
+## depend on the gflags library should link to the "gflags" library target.
+##
+## Example CMakeLists.txt of user project which requires separate gflags installation:
+## cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
+##
+## project(Foo)
+##
+## find_package(gflags REQUIRED)
+##
+## add_executable(foo src/foo.cc)
+## target_link_libraries(foo gflags)
+##
+## Example CMakeLists.txt of user project which requires separate single-threaded static gflags installation:
+## cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
+##
+## project(Foo)
+##
+## find_package(gflags COMPONENTS nothreads_static)
+##
+## add_executable(foo src/foo.cc)
+## target_link_libraries(foo gflags)
+##
+## Example CMakeLists.txt of super-project which contains gflags source tree:
+## cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
+##
+## project(Foo)
+##
+## add_subdirectory(gflags)
+##
+## add_executable(foo src/foo.cc)
+## target_link_libraries(foo gflags)
+##
+## Variables to configure the source files:
+## - GFLAGS_IS_A_DLL
+## - GFLAGS_NAMESPACE
+## - GFLAGS_ATTRIBUTE_UNUSED
+## - GFLAGS_INTTYPES_FORMAT
+##
+## Variables to configure the build:
+## - GFLAGS_SOVERSION
+## - GFLAGS_BUILD_SHARED_LIBS
+## - GFLAGS_BUILD_STATIC_LIBS
+## - GFLAGS_BUILD_gflags_LIB
+## - GFLAGS_BUILD_gflags_nothreads_LIB
+## - GFLAGS_BUILD_TESTING
+## - GFLAGS_BUILD_PACKAGING
+##
+## Variables to configure the installation:
+## - GFLAGS_INCLUDE_DIR
+## - GFLAGS_LIBRARY_INSTALL_DIR or LIB_INSTALL_DIR or LIB_SUFFIX
+## - GFLAGS_INSTALL_HEADERS
+## - GFLAGS_INSTALL_SHARED_LIBS
+## - GFLAGS_INSTALL_STATIC_LIBS
+
cmake_minimum_required (VERSION 2.8.12 FATAL_ERROR)
if (POLICY CMP0042)
@@ -34,17 +106,36 @@
PACKAGE_VERSION_PATCH
)
-set (PACKAGE_SOVERSION "${PACKAGE_VERSION_MAJOR}")
+# shared library ABI version number, can be overridden by package maintainers
+# using -DGFLAGS_SOVERSION=XXX on the command-line
+if (GFLAGS_SOVERSION)
+ set (PACKAGE_SOVERSION "${GFLAGS_SOVERSION}")
+else ()
+ set (PACKAGE_SOVERSION "${PACKAGE_VERSION_MAJOR}")
+endif ()
+
+# when gflags is included as subproject (e.g., as Git submodule/subtree) in the source
+# tree of a project that uses it, no variables should be added to the CMake cache;
+# users may set the non-cached variable GFLAGS_IS_SUBPROJECT before add_subdirectory(gflags)
+if (NOT DEFINED GFLAGS_IS_SUBPROJECT)
+ if ("^${CMAKE_SOURCE_DIR}$" STREQUAL "^${PROJECT_SOURCE_DIR}$")
+ set (GFLAGS_IS_SUBPROJECT FALSE)
+ else ()
+ set (GFLAGS_IS_SUBPROJECT TRUE)
+ endif ()
+endif ()
+
+# prefix for package variables in CMake configuration file
+string (TOUPPER "${PACKAGE_NAME}" PACKAGE_PREFIX)
# ----------------------------------------------------------------------------
# options
-if (NOT GFLAGS_NAMESPACE)
- # maintain binary backwards compatibility with gflags library version <= 2.0,
- # but at the same time enable the use of the preferred new "gflags" namespace
- set (GFLAGS_NAMESPACE "google;${PACKAGE_NAME}" CACHE STRING "Name(s) of library namespace (separate multiple options by semicolon)")
- mark_as_advanced (GFLAGS_NAMESPACE)
-endif ()
-set (GFLAGS_NAMESPACE_SECONDARY "${GFLAGS_NAMESPACE}")
+
+# maintain binary backwards compatibility with gflags library version <= 2.0,
+# but at the same time enable the use of the preferred new "gflags" namespace
+gflags_define (STRING NAMESPACE "Name(s) of library namespace (separate multiple options by semicolon)" "google;${PACKAGE_NAME}" "${PACKAGE_NAME}")
+gflags_property (NAMESPACE ADVANCED TRUE)
+set (GFLAGS_NAMESPACE_SECONDARY "${NAMESPACE}")
list (REMOVE_DUPLICATES GFLAGS_NAMESPACE_SECONDARY)
if (NOT GFLAGS_NAMESPACE_SECONDARY)
message (FATAL_ERROR "GFLAGS_NAMESPACE must be set to one (or more) valid C++ namespace identifier(s separated by semicolon \";\").")
@@ -57,46 +148,54 @@
list (GET GFLAGS_NAMESPACE_SECONDARY 0 GFLAGS_NAMESPACE)
list (REMOVE_AT GFLAGS_NAMESPACE_SECONDARY 0)
-option (BUILD_SHARED_LIBS "Request build of shared libraries." OFF)
-option (BUILD_STATIC_LIBS "Request build of static libraries (default if BUILD_SHARED_LIBS is OFF)." OFF)
-option (BUILD_gflags_LIB "Request build of the multi-threaded gflags library." ON)
-option (BUILD_gflags_nothreads_LIB "Request build of the single-threaded gflags library." ON)
-option (BUILD_PACKAGING "Enable build of distribution packages using CPack." OFF)
-option (BUILD_TESTING "Enable build of the unit tests and their execution using CTest." OFF)
-option (INSTALL_HEADERS "Request packaging of headers and other development files." ON)
+# cached build options when gflags is not a subproject, otherwise non-cached CMake variables
+# usage: gflags_define(BOOL <name> <doc> <default> [<subproject default>])
+gflags_define (BOOL BUILD_SHARED_LIBS "Request build of shared libraries." OFF OFF)
+gflags_define (BOOL BUILD_STATIC_LIBS "Request build of static libraries (default if BUILD_SHARED_LIBS is OFF)." OFF ON)
+gflags_define (BOOL BUILD_gflags_LIB "Request build of the multi-threaded gflags library." ON OFF)
+gflags_define (BOOL BUILD_gflags_nothreads_LIB "Request build of the single-threaded gflags library." ON ON)
+gflags_define (BOOL BUILD_PACKAGING "Enable build of distribution packages using CPack." OFF OFF)
+gflags_define (BOOL BUILD_TESTING "Enable build of the unit tests and their execution using CTest." OFF OFF)
+gflags_define (BOOL INSTALL_HEADERS "Request installation of headers and other development files." ON OFF)
+gflags_define (BOOL INSTALL_SHARED_LIBS "Request installation of shared libraries." ON ON)
+gflags_define (BOOL INSTALL_STATIC_LIBS "Request installation of static libraries." ON OFF)
-mark_as_advanced (CLEAR CMAKE_INSTALL_PREFIX)
-mark_as_advanced (CMAKE_CONFIGURATION_TYPES
- BUILD_STATIC_LIBS
- INSTALL_HEADERS)
-if (APPLE)
- mark_as_advanced(CMAKE_OSX_ARCHITECTURES
- CMAKE_OSX_DEPLOYMENT_TARGET
- CMAKE_OSX_SYSROOT)
-endif ()
+gflags_property (BUILD_STATIC_LIBS ADVANCED TRUE)
+gflags_property (INSTALL_HEADERS ADVANCED TRUE)
+gflags_property (INSTALL_SHARED_LIBS ADVANCED TRUE)
+gflags_property (INSTALL_STATIC_LIBS ADVANCED TRUE)
+
+if (NOT GFLAGS_IS_SUBPROJECT)
+ foreach (varname IN ITEMS CMAKE_INSTALL_PREFIX)
+ gflags_property (${varname} ADVANCED FALSE)
+ endforeach ()
+ foreach (varname IN ITEMS CMAKE_CONFIGURATION_TYPES CMAKE_OSX_ARCHITECTURES CMAKE_OSX_DEPLOYMENT_TARGET CMAKE_OSX_SYSROOT)
+ gflags_property (${varname} ADVANCED TRUE)
+ endforeach ()
+ if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CXX_FLAGS)
+ gflags_set (CMAKE_BUILD_TYPE Release)
+ endif ()
+ if (CMAKE_CONFIGURATION_TYPES)
+ gflags_property (CMAKE_BUILD_TYPE STRINGS "${CMAKE_CONFIGURATION_TYPES}")
+ endif ()
+endif () # NOT GFLAGS_IS_SUBPROJECT
if (NOT BUILD_SHARED_LIBS AND NOT BUILD_STATIC_LIBS)
set (BUILD_STATIC_LIBS ON)
endif ()
if (NOT BUILD_gflags_LIB AND NOT BUILD_gflags_nothreads_LIB)
- message (FATAL_ERROR "At least one of BUILD_gflags_LIB and BUILD_gflags_nothreads_LIB must be ON.")
+ message (FATAL_ERROR "At least one of [GFLAGS_]BUILD_gflags_LIB and [GFLAGS_]BUILD_gflags_nothreads_LIB must be ON.")
endif ()
-if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CXX_FLAGS)
- set_property (CACHE CMAKE_BUILD_TYPE PROPERTY VALUE Release)
+gflags_define (STRING INCLUDE_DIR "Name of include directory of installed header files relative to CMAKE_INSTALL_PREFIX/include/" "${PACKAGE_NAME}")
+gflags_property (INCLUDE_DIR ADVANCED TRUE)
+if (IS_ABSOLUTE INCLUDE_DIR)
+ message (FATAL_ERROR "[GFLAGS_]INCLUDE_DIR must be a path relative to CMAKE_INSTALL_PREFIX/include/")
endif ()
-
-if (NOT GFLAGS_INCLUDE_DIR)
- set (GFLAGS_INCLUDE_DIR "${PACKAGE_NAME}" CACHE STRING "Name of include directory of installed header files")
- mark_as_advanced (GFLAGS_INCLUDE_DIR)
-else ()
- if (IS_ABSOLUTE GFLAGS_INCLUDE_DIR)
- message (FATAL_ERROR "GFLAGS_INCLUDE_DIR must be a path relative to CMAKE_INSTALL_PREFIX/include")
- endif ()
- if (GFLAGS_INCLUDE_DIR MATCHES "^\\.\\.[/\\]")
- message (FATAL_ERROR "GFLAGS_INCLUDE_DIR must not start with parent directory reference (../)")
- endif ()
+if (INCLUDE_DIR MATCHES "^\\.\\.[/\\]")
+ message (FATAL_ERROR "[GFLAGS_]INCLUDE_DIR must not start with parent directory reference (../)")
endif ()
+set (GFLAGS_INCLUDE_DIR "${INCLUDE_DIR}")
# ----------------------------------------------------------------------------
# system checks
@@ -135,10 +234,10 @@
endif ()
endif ()
-set (GFLAGS_INTTYPES_FORMAT "" CACHE STRING "Format of integer types: \"C99\" (uint32_t), \"BSD\" (u_int32_t), \"VC7\" (__int32)")
-set_property (CACHE GFLAGS_INTTYPES_FORMAT PROPERTY STRINGS "C99;BSD;VC7")
-mark_as_advanced (GFLAGS_INTTYPES_FORMAT)
-if (NOT GFLAGS_INTTYPES_FORMAT)
+gflags_define (STRING INTTYPES_FORMAT "Format of integer types: \"C99\" (uint32_t), \"BSD\" (u_int32_t), \"VC7\" (__int32)" "")
+gflags_property (INTTYPES_FORMAT STRINGS "C99;BSD;VC7")
+gflags_property (INTTYPES_FORMAT ADVANCED TRUE)
+if (NOT INTTYPES_FORMAT)
set (TYPES uint32_t u_int32_t)
if (MSVC)
list (INSERT TYPES 0 __int32)
@@ -150,29 +249,30 @@
endif ()
endforeach ()
if (HAVE_uint32_t)
- set_property (CACHE GFLAGS_INTTYPES_FORMAT PROPERTY VALUE C99)
+ gflags_set (INTTYPES_FORMAT C99)
elseif (HAVE_u_int32_t)
- set_property (CACHE GFLAGS_INTTYPES_FORMAT PROPERTY VALUE BSD)
+ gflags_set (INTTYPES_FORMAT BSD)
elseif (HAVE___int32)
- set_property (CACHE GFLAGS_INTTYPES_FORMAT PROPERTY VALUE VC7)
+ gflags_set (INTTYPES_FORMAT VC7)
else ()
- mark_as_advanced (CLEAR GFLAGS_INTTYPES_FORMAT)
+ gflags_property (INTTYPES_FORMAT ADVANCED FALSE)
message (FATAL_ERROR "Do not know how to define a 32-bit integer quantity on your system!"
" Neither uint32_t, u_int32_t, nor __int32 seem to be available."
- " Set GFLAGS_INTTYPES_FORMAT to either C99, BSD, or VC7 and try again.")
+ " Set [GFLAGS_]INTTYPES_FORMAT to either C99, BSD, or VC7 and try again.")
endif ()
endif ()
# use of special characters in strings to circumvent bug #0008226
-if ("^${GFLAGS_INTTYPES_FORMAT}$" STREQUAL "^WIN$")
- set_property (CACHE GFLAGS_INTTYPES_FORMAT PROPERTY VALUE VC7)
+if ("^${INTTYPES_FORMAT}$" STREQUAL "^WIN$")
+ gflags_set (INTTYPES_FORMAT VC7)
endif ()
-if (NOT GFLAGS_INTTYPES_FORMAT MATCHES "^(C99|BSD|VC7)$")
- message (FATAL_ERROR "Invalid value for GFLAGS_INTTYPES_FORMAT! Choose one of \"C99\", \"BSD\", or \"VC7\"")
+if (NOT INTTYPES_FORMAT MATCHES "^(C99|BSD|VC7)$")
+ message (FATAL_ERROR "Invalid value for [GFLAGS_]INTTYPES_FORMAT! Choose one of \"C99\", \"BSD\", or \"VC7\"")
endif ()
+set (GFLAGS_INTTYPES_FORMAT "${INTTYPES_FORMAT}")
set (GFLAGS_INTTYPES_FORMAT_C99 0)
set (GFLAGS_INTTYPES_FORMAT_BSD 0)
set (GFLAGS_INTTYPES_FORMAT_VC7 0)
-set ("GFLAGS_INTTYPES_FORMAT_${GFLAGS_INTTYPES_FORMAT}" 1)
+set ("GFLAGS_INTTYPES_FORMAT_${INTTYPES_FORMAT}" 1)
if (MSVC)
set (HAVE_strtoll 0)
@@ -184,26 +284,29 @@
endif ()
endif ()
-set (CMAKE_THREAD_PREFER_PTHREAD TRUE)
-find_package (Threads)
-if (Threads_FOUND AND CMAKE_USE_PTHREADS_INIT)
- set (HAVE_PTHREAD 1)
- check_type_size (pthread_rwlock_t RWLOCK LANGUAGE CXX)
+if (BUILD_gflags_LIB)
+ set (CMAKE_THREAD_PREFER_PTHREAD TRUE)
+ find_package (Threads)
+ if (Threads_FOUND AND CMAKE_USE_PTHREADS_INIT)
+ set (HAVE_PTHREAD 1)
+ check_type_size (pthread_rwlock_t RWLOCK LANGUAGE CXX)
+ else ()
+ set (HAVE_PTHREAD 0)
+ endif ()
+ if (UNIX AND NOT HAVE_PTHREAD)
+ if (CMAKE_HAVE_PTHREAD_H)
+ set (what "library")
+ else ()
+ set (what ".h file")
+ endif ()
+ message (FATAL_ERROR "Could not find pthread${what}. Check the log file"
+ "\n\t${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log"
+ "\nor disable the build of the multi-threaded gflags library (BUILD_gflags_LIB=OFF).")
+ endif ()
else ()
set (HAVE_PTHREAD 0)
endif ()
-if (UNIX AND NOT HAVE_PTHREAD AND BUILD_gflags_LIB)
- if (CMAKE_HAVE_PTHREAD_H)
- set (what "library")
- else ()
- set (what ".h file")
- endif ()
- message (FATAL_ERROR "Could not find pthread${what}. Check the log file"
- "\n\t${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log"
- "\nor disable the build of the multi-threaded gflags library (BUILD_gflags_LIB=OFF).")
-endif ()
-
# ----------------------------------------------------------------------------
# source files - excluding root subdirectory and/or .in suffix
set (PUBLIC_HDRS
@@ -244,19 +347,23 @@
# ----------------------------------------------------------------------------
# configure source files
-if (CMAKE_COMPILER_IS_GNUCXX)
- set (GFLAGS_ATTRIBUTE_UNUSED "__attribute((unused))")
-else ()
- set (GFLAGS_ATTRIBUTE_UNUSED)
+if (NOT DEFINED GFLAGS_ATTRIBUTE_UNUSED)
+ if (CMAKE_COMPILER_IS_GNUCXX)
+ set (GFLAGS_ATTRIBUTE_UNUSED "__attribute((unused))")
+ else ()
+ set (GFLAGS_ATTRIBUTE_UNUSED)
+ endif ()
endif ()
# whenever we build a shared library (DLL on Windows), configure the public
# headers of the API for use of this library rather than the optionally
# also build statically linked library; users can override GFLAGS_DLL_DECL
-if (BUILD_SHARED_LIBS)
- set (GFLAGS_IS_A_DLL 1)
-else ()
- set (GFLAGS_IS_A_DLL 0)
+if (NOT DEFINED GFLAGS_IS_A_DLL)
+ if (BUILD_SHARED_LIBS)
+ set (GFLAGS_IS_A_DLL 1)
+ else ()
+ set (GFLAGS_IS_A_DLL 0)
+ endif ()
endif ()
configure_headers (PUBLIC_HDRS ${PUBLIC_HDRS})
@@ -265,9 +372,11 @@
# ----------------------------------------------------------------------------
# output directories
-set (CMAKE_RUNTIME_OUTPUT_DIRECTORY "bin")
-set (CMAKE_LIBRARY_OUTPUT_DIRECTORY "lib")
-set (CMAKE_ARCHIVE_OUTPUT_DIRECTORY "lib")
+if (NOT GFLAGS_IS_SUBPROJECT)
+ set (CMAKE_RUNTIME_OUTPUT_DIRECTORY "bin")
+ set (CMAKE_LIBRARY_OUTPUT_DIRECTORY "lib")
+ set (CMAKE_ARCHIVE_OUTPUT_DIRECTORY "lib")
+endif ()
# ----------------------------------------------------------------------------
# installation directories
@@ -281,13 +390,11 @@
# The LIB_INSTALL_DIR and LIB_SUFFIX variables are used by the Fedora
# package maintainers. Also package maintainers of other distribution
# packages need to be able to specify the name of the library directory.
- if (NOT LIB_INSTALL_DIR)
- set (LIB_INSTALL_DIR "lib${LIB_SUFFIX}")
+ if (NOT GFLAGS_LIBRARY_INSTALL_DIR AND LIB_INSTALL_DIR)
+ set (GFLAGS_LIBRARY_INSTALL_DIR "${LIB_INSTALL_DIR}")
endif ()
- set (LIBRARY_INSTALL_DIR "${LIB_INSTALL_DIR}"
- CACHE PATH "Directory of installed libraries, e.g., \"lib64\""
- )
- mark_as_advanced (LIBRARY_INSTALL_DIR)
+ gflags_define (PATH LIBRARY_INSTALL_DIR "Directory of installed libraries, e.g., \"lib64\"" "lib${LIB_SUFFIX}")
+ gflags_property (LIBRARY_INSTALL_DIR ADVANCED TRUE)
set (INCLUDE_INSTALL_DIR include)
set (CONFIG_INSTALL_DIR ${LIBRARY_INSTALL_DIR}/cmake/${PACKAGE_NAME})
endif ()
@@ -314,12 +421,12 @@
# multi-threaded vs. single-threaded
foreach (opts IN ITEMS "" _nothreads)
if (BUILD_gflags${opts}_LIB)
- add_library (gflags${opts}-${type} ${TYPE} ${GFLAGS_SRCS} ${PRIVATE_HDRS} ${PUBLIC_HDRS})
+ add_library (gflags${opts}_${type} ${TYPE} ${GFLAGS_SRCS} ${PRIVATE_HDRS} ${PUBLIC_HDRS})
set (include_dirs "$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>")
if (INSTALL_HEADERS)
list (APPEND include_dirs "$<INSTALL_INTERFACE:${INCLUDE_INSTALL_DIR}>")
endif ()
- target_include_directories (gflags${opts}-${type}
+ target_include_directories (gflags${opts}_${type}
PUBLIC "${include_dirs}"
PRIVATE "${PROJECT_SOURCE_DIR}/src;${PROJECT_BINARY_DIR}/include/${GFLAGS_INCLUDE_DIR}"
)
@@ -328,35 +435,67 @@
else ()
set (defines "GFLAGS_IS_A_DLL=${GFLAGS_IS_A_DLL}")
if (CMAKE_USE_PTHREADS_INIT)
- target_link_libraries (gflags${opts}-${type} ${CMAKE_THREAD_LIBS_INIT})
+ target_link_libraries (gflags${opts}_${type} ${CMAKE_THREAD_LIBS_INIT})
endif ()
endif ()
set_target_properties (
- gflags${opts}-${type} PROPERTIES COMPILE_DEFINITIONS "${defines}"
+ gflags${opts}_${type} PROPERTIES COMPILE_DEFINITIONS "${defines}"
OUTPUT_NAME "gflags${opts}${type_suffix}"
VERSION "${PACKAGE_VERSION}"
SOVERSION "${PACKAGE_SOVERSION}"
)
if (HAVE_SHLWAPI_H)
- target_link_libraries (gflags${opts}-${type} shlwapi.lib)
+ target_link_libraries (gflags${opts}_${type} shlwapi.lib)
endif ()
- if (NOT TARGET gflags${opts})
- add_custom_target (gflags${opts})
+ list (APPEND TARGETS gflags${opts}_${type})
+ # add convenience make target for build of both shared and static libraries
+ if (NOT GFLAGS_IS_SUBPROJECT)
+ if (NOT TARGET gflags${opts})
+ add_custom_target (gflags${opts})
+ endif ()
+ add_dependencies (gflags${opts} gflags${opts}_${type})
endif ()
- add_dependencies (gflags${opts} gflags${opts}-${type})
- list (APPEND TARGETS gflags${opts}-${type})
endif ()
endforeach ()
endif ()
endforeach ()
+# add ALIAS target for use in super-project, prefer static over shared, single-threaded over multi-threaded
+if (GFLAGS_IS_SUBPROJECT)
+ foreach (type IN ITEMS static shared)
+ foreach (opts IN ITEMS "_nothreads" "")
+ if (TARGET gflags${opts}_${type})
+ add_library (gflags ALIAS gflags${opts}_${type})
+ break ()
+ endif ()
+ endforeach ()
+ if (TARGET gflags)
+ break ()
+ endif ()
+ endforeach ()
+endif ()
+
# ----------------------------------------------------------------------------
# installation rules
file (RELATIVE_PATH INSTALL_PREFIX_REL2CONFIG_DIR "${CMAKE_INSTALL_PREFIX}/${CONFIG_INSTALL_DIR}" "${CMAKE_INSTALL_PREFIX}")
configure_file (cmake/config.cmake.in "${PROJECT_BINARY_DIR}/${PACKAGE_NAME}-config-install.cmake" @ONLY)
configure_file (cmake/version.cmake.in "${PROJECT_BINARY_DIR}/${PACKAGE_NAME}-config-version.cmake" @ONLY)
-install (TARGETS ${TARGETS} DESTINATION ${LIBRARY_INSTALL_DIR} EXPORT gflags-lib)
+if (BUILD_SHARED_LIBS AND INSTALL_SHARED_LIBS)
+ foreach (opts IN ITEMS "" _nothreads)
+ if (BUILD_gflags${opts}_LIB)
+ install (TARGETS gflags${opts}_shared DESTINATION ${LIBRARY_INSTALL_DIR} EXPORT gflags-lib)
+ endif ()
+ endforeach ()
+endif ()
+if (BUILD_STATIC_LIBS AND INSTALL_STATIC_LIBS)
+ foreach (opts IN ITEMS "" _nothreads)
+ if (BUILD_gflags${opts}_LIB)
+ install (TARGETS gflags${opts}_static DESTINATION ${LIBRARY_INSTALL_DIR} EXPORT gflags-lib)
+ endif ()
+ endforeach ()
+endif ()
+
if (INSTALL_HEADERS)
install (FILES ${PUBLIC_HDRS} DESTINATION ${INCLUDE_INSTALL_DIR}/${GFLAGS_INCLUDE_DIR})
install (
@@ -368,7 +507,7 @@
FILES "${PROJECT_BINARY_DIR}/${PACKAGE_NAME}-config-version.cmake"
DESTINATION ${CONFIG_INSTALL_DIR}
)
- install (EXPORT gflags-lib DESTINATION ${CONFIG_INSTALL_DIR} FILE ${PACKAGE_NAME}-export.cmake)
+ install (EXPORT gflags-lib DESTINATION ${CONFIG_INSTALL_DIR} FILE ${PACKAGE_NAME}-targets.cmake)
if (UNIX)
install (PROGRAMS src/gflags_completions.sh DESTINATION ${RUNTIME_INSTALL_DIR})
endif ()
@@ -377,7 +516,7 @@
# ----------------------------------------------------------------------------
# support direct use of build tree
set (INSTALL_PREFIX_REL2CONFIG_DIR .)
-export (TARGETS ${TARGETS} FILE "${PROJECT_BINARY_DIR}/${PACKAGE_NAME}-export.cmake")
+export (TARGETS ${TARGETS} FILE "${PROJECT_BINARY_DIR}/${PACKAGE_NAME}-targets.cmake")
export (PACKAGE gflags)
configure_file (cmake/config.cmake.in "${PROJECT_BINARY_DIR}/${PACKAGE_NAME}-config.cmake" @ONLY)
@@ -399,10 +538,13 @@
"\n BUILD_SHARED_LIBS=ON"
"\n BUILD_STATIC_LIBS=OFF"
"\n INSTALL_HEADERS=OFF"
+ "\n INSTALL_SHARED_LIBS=ON"
"\nRecommended options for generation of development package:"
"\n BUILD_SHARED_LIBS=ON"
"\n BUILD_STATIC_LIBS=ON"
- "\n INSTALL_HEADERS=ON")
+ "\n INSTALL_HEADERS=ON"
+ "\n INSTALL_SHARED_LIBS=ON"
+ "\n INSTALL_STATIC_LIBS=ON")
endif ()
# default package generators
diff --git a/cmake/config.cmake.in b/cmake/config.cmake.in
index a7419c2..6b55990 100644
--- a/cmake/config.cmake.in
+++ b/cmake/config.cmake.in
@@ -1,13 +1,13 @@
## gflags CMake configuration file
# library version information
-set (@PACKAGE_NAME@_VERSION_STRING "@PACKAGE_VERSION@")
-set (@PACKAGE_NAME@_VERSION_MAJOR @PACKAGE_VERSION_MAJOR@)
-set (@PACKAGE_NAME@_VERSION_MINOR @PACKAGE_VERSION_MINOR@)
-set (@PACKAGE_NAME@_VERSION_PATCH @PACKAGE_VERSION_PATCH@)
+set (@PACKAGE_PREFIX@_VERSION_STRING "@PACKAGE_VERSION@")
+set (@PACKAGE_PREFIX@_VERSION_MAJOR @PACKAGE_VERSION_MAJOR@)
+set (@PACKAGE_PREFIX@_VERSION_MINOR @PACKAGE_VERSION_MINOR@)
+set (@PACKAGE_PREFIX@_VERSION_PATCH @PACKAGE_VERSION_PATCH@)
# import targets
-include ("${CMAKE_CURRENT_LIST_DIR}/@PACKAGE_NAME@-export.cmake")
+include ("${CMAKE_CURRENT_LIST_DIR}/@PACKAGE_NAME@-targets.cmake")
# installation prefix
get_filename_component (CMAKE_CURRENT_LIST_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
@@ -18,94 +18,151 @@
# Newer versions of CMake set the INTERFACE_INCLUDE_DIRECTORIES property
# of the imported targets. It is hence not necessary to add this path
# manually to the include search path for targets which link to gflags.
-set (@PACKAGE_NAME@_INCLUDE_DIR "${_INSTALL_PREFIX}/@INCLUDE_INSTALL_DIR@")
+set (@PACKAGE_PREFIX@_INCLUDE_DIR "${_INSTALL_PREFIX}/@INCLUDE_INSTALL_DIR@")
-# default settings
-if (NOT DEFINED @PACKAGE_NAME@_SHARED)
- if (TARGET @PACKAGE_NAME@-static OR TARGET @PACKAGE_NAME@_nothreads-static)
- set (@PACKAGE_NAME@_SHARED FALSE)
+if (@PACKAGE_NAME@_FIND_COMPONENTS)
+ foreach (@PACKAGE_NAME@_FIND_COMPONENT IN LISTS @PACKAGE_NAME@_FIND_COMPONENTS)
+ if (@PACKAGE_NAME@_FIND_REQUIRED_${@PACKAGE_NAME@_FIND_COMPONENT} AND NOT TARGET @PACKAGE_NAME@_${@PACKAGE_NAME@_FIND_COMPONENT})
+ message (FATAL_ERROR "Package @PACKAGE_NAME@ was installed without required component ${@PACKAGE_NAME@_FIND_COMPONENT}!")
+ endif ()
+ endforeach ()
+ list (GET @PACKAGE_NAME@_FIND_COMPONENTS 0 @PACKAGE_NAME@_FIND_COMPONENT)
+else ()
+ set (@PACKAGE_NAME@_FIND_COMPONENT)
+endif ()
+
+# default settings of @PACKAGE_PREFIX@_SHARED and @PACKAGE_PREFIX@_NOTHREADS
+#
+# It is recommended to use either one of the following find_package commands
+# instead of setting the @PACKAGE_PREFIX@_(SHARED|NOTHREADS) variables:
+# - find_package(@PACKAGE_NAME@ REQUIRED)
+# - find_package(@PACKAGE_NAME@ COMPONENTS nothreads_static)
+# - find_package(@PACKAGE_NAME@ COMPONENTS nothreads_shared)
+# - find_package(@PACKAGE_NAME@ COMPONENTS static)
+# - find_package(@PACKAGE_NAME@ COMPONENTS shared)
+if (NOT DEFINED @PACKAGE_PREFIX@_SHARED)
+ if (DEFINED @PACKAGE_NAME@_SHARED)
+ set (@PACKAGE_PREFIX@_SHARED ${@PACKAGE_NAME@_SHARED})
+ elseif (@PACKAGE_NAME@_FIND_COMPONENT)
+ if (@PACKAGE_NAME@_FIND_COMPONENT MATCHES "shared")
+ set (@PACKAGE_PREFIX@_SHARED TRUE)
+ else ()
+ set (@PACKAGE_PREFIX@_SHARED FALSE)
+ endif ()
+ elseif (TARGET @PACKAGE_NAME@_shared OR TARGET @PACKAGE_NAME@_nothreads_shared)
+ set (@PACKAGE_PREFIX@_SHARED TRUE)
else ()
- set (@PACKAGE_NAME@_SHARED TRUE)
+ set (@PACKAGE_PREFIX@_SHARED FALSE)
endif ()
endif ()
-if (NOT DEFINED @PACKAGE_NAME@_NOTHREADS)
- if (TARGET @PACKAGE_NAME@-static OR TARGET @PACKAGE_NAME@-shared)
- set (@PACKAGE_NAME@_NOTHREADS FALSE)
+if (NOT DEFINED @PACKAGE_PREFIX@_NOTHREADS)
+ if (DEFINED @PACKAGE_NAME@_NOTHREADS)
+ set (@PACKAGE_PREFIX@_NOTHREADS ${@PACKAGE_NAME@_NOTHREADS})
+ elseif (@PACKAGE_NAME@_FIND_COMPONENT)
+ if (@PACKAGE_NAME@_FIND_COMPONENT MATCHES "nothreads")
+ set (@PACKAGE_PREFIX@_NOTHREADS TRUE)
+ else ()
+ set (@PACKAGE_PREFIX@_NOTHREADS FALSE)
+ endif ()
+ elseif (TARGET @PACKAGE_NAME@_static OR TARGET @PACKAGE_NAME@_shared)
+ set (@PACKAGE_PREFIX@_NOTHREADS FALSE)
else ()
- set (@PACKAGE_NAME@_NOTHREADS TRUE)
+ set (@PACKAGE_PREFIX@_NOTHREADS TRUE)
endif ()
endif ()
# choose imported library target
-if (NOT @PACKAGE_NAME@_TARGET)
- if (@PACKAGE_NAME@_SHARED)
- if (@PACKAGE_NAME@_NOTHREADS)
- set (@PACKAGE_NAME@_TARGET @PACKAGE_NAME@_nothreads-shared)
+if (NOT @PACKAGE_PREFIX@_TARGET)
+ if (@PACKAGE_NAME@_TARGET)
+ set (@PACKAGE_PREFIX@_TARGET ${@PACKAGE_NAME@_TARGET})
+ elseif (@PACKAGE_PREFIX@_SHARED)
+ if (@PACKAGE_PREFIX@_NOTHREADS)
+ set (@PACKAGE_PREFIX@_TARGET @PACKAGE_NAME@_nothreads_shared)
else ()
- set (@PACKAGE_NAME@_TARGET @PACKAGE_NAME@-shared)
+ set (@PACKAGE_PREFIX@_TARGET @PACKAGE_NAME@_shared)
endif ()
else ()
- if (@PACKAGE_NAME@_NOTHREADS)
- set (@PACKAGE_NAME@_TARGET @PACKAGE_NAME@_nothreads-static)
+ if (@PACKAGE_PREFIX@_NOTHREADS)
+ set (@PACKAGE_PREFIX@_TARGET @PACKAGE_NAME@_nothreads_static)
else ()
- set (@PACKAGE_NAME@_TARGET @PACKAGE_NAME@-static)
+ set (@PACKAGE_PREFIX@_TARGET @PACKAGE_NAME@_static)
endif ()
endif ()
endif ()
-if (NOT TARGET ${@PACKAGE_NAME@_TARGET})
- message (FATAL_ERROR "Your @PACKAGE_NAME@ installation does not contain a ${@PACKAGE_NAME@_TARGET} library target!"
- " Try a different combination of @PACKAGE_NAME@_SHARED and @PACKAGE_NAME@_NOTHREADS.")
+if (NOT TARGET ${@PACKAGE_PREFIX@_TARGET})
+ message (FATAL_ERROR "Your @PACKAGE_NAME@ installation does not contain a ${@PACKAGE_PREFIX@_TARGET} library target!"
+ " Try a different combination of @PACKAGE_PREFIX@_SHARED and @PACKAGE_PREFIX@_NOTHREADS.")
endif ()
# add more convenient "@PACKAGE_NAME@" import target
if (NOT TARGET @PACKAGE_NAME@)
- if (@PACKAGE_NAME@_SHARED)
+ if (@PACKAGE_PREFIX@_SHARED)
add_library (@PACKAGE_NAME@ SHARED IMPORTED)
else ()
add_library (@PACKAGE_NAME@ STATIC IMPORTED)
endif ()
- # INTERFACE_INCLUDE_DIRECTORIES
- get_target_property (_@PACKAGE_NAME@_INCLUDES ${@PACKAGE_NAME@_TARGET} INTERFACE_INCLUDE_DIRECTORIES)
- if (_@PACKAGE_NAME@_INCLUDES)
- set_target_properties(@PACKAGE_NAME@ PROPERTIES
- INTERFACE_INCLUDE_DIRECTORIES "${_@PACKAGE_NAME@_INCLUDES}"
- )
- endif ()
- unset (_@PACKAGE_NAME@_INCLUDES)
- # set configuration specific properties
- get_target_property (_@PACKAGE_NAME@_CONFIGURATIONS ${@PACKAGE_NAME@_TARGET} IMPORTED_CONFIGURATIONS)
- set_target_properties (@PACKAGE_NAME@ PROPERTIES IMPORTED_CONFIGURATIONS "${_@PACKAGE_NAME@_CONFIGURATIONS}")
- foreach (_@PACKAGE_NAME@_CONFIG IN LISTS _@PACKAGE_NAME@_CONFIGURATIONS)
- # IMPORTED_LOCATION_<config>
- get_target_property (_@PACKAGE_NAME@_LOCATION ${@PACKAGE_NAME@_TARGET} IMPORTED_LOCATION_${_@PACKAGE_NAME@_CONFIG})
- if (_@PACKAGE_NAME@_LOCATION)
+ # copy INTERFACE_* properties
+ foreach (_@PACKAGE_PREFIX@_PROPERTY_NAME IN ITEMS
+ COMPILE_DEFINITIONS
+ COMPILE_FEATURES
+ COMPILE_OPTIONS
+ INCLUDE_DIRECTORIES
+ LINK_LIBRARIES
+ POSITION_INDEPENDENT_CODE
+ )
+ get_target_property (_@PACKAGE_PREFIX@_PROPERTY_VALUE ${@PACKAGE_PREFIX@_TARGET} INTERFACE_${_@PACKAGE_PREFIX@_PROPERTY_NAME})
+ if (_@PACKAGE_PREFIX@_PROPERTY_VALUE)
set_target_properties(@PACKAGE_NAME@ PROPERTIES
- IMPORTED_LOCATION_${_@PACKAGE_NAME@_CONFIG} "${_@PACKAGE_NAME@_LOCATION}"
+ INTERFACE_${_@PACKAGE_PREFIX@_PROPERTY_NAME} "${_@PACKAGE_PREFIX@_PROPERTY_VALUE}"
)
endif ()
- unset (_@PACKAGE_NAME@_LOCATION)
- # IMPORTED_LINK_INTERFACE_LANGUAGES_<config> (static)
- get_target_property (_@PACKAGE_NAME@_LANGUAGES ${@PACKAGE_NAME@_TARGET} IMPORTED_LINK_INTERFACE_LANGUAGES_${_@PACKAGE_NAME@_CONFIG})
- if (_@PACKAGE_NAME@_LANGUAGES)
- set_target_properties(@PACKAGE_NAME@ PROPERTIES
- IMPORTED_LINK_INTERFACE_LANGUAGES_${_@PACKAGE_NAME@_CONFIG} "${_@PACKAGE_NAME@_LANGUAGES}"
- )
- endif ()
- unset (_@PACKAGE_NAME@_LANGUAGES)
- # IMPORTED_SONAME_<config> (shared)
- get_target_property (_@PACKAGE_NAME@_SONAME ${@PACKAGE_NAME@_TARGET} IMPORTED_SONAME_${_@PACKAGE_NAME@_CONFIG})
- if (_@PACKAGE_NAME@_SONAME)
- set_target_properties(@PACKAGE_NAME@ PROPERTIES
- IMPORTED_SONAME_${_@PACKAGE_NAME@_CONFIG} "${_@PACKAGE_NAME@_SONAME}"
- )
- endif ()
- unset (_@PACKAGE_NAME@_SONAME)
endforeach ()
- unset (_@PACKAGE_NAME@_CONFIGURATIONS)
+ # copy IMPORTED_*_<CONFIG> properties
+ get_target_property (_@PACKAGE_PREFIX@_CONFIGURATIONS ${@PACKAGE_PREFIX@_TARGET} IMPORTED_CONFIGURATIONS)
+ set_target_properties (@PACKAGE_NAME@ PROPERTIES IMPORTED_CONFIGURATIONS "${_@PACKAGE_PREFIX@_CONFIGURATIONS}")
+ foreach (_@PACKAGE_PREFIX@_PROPERTY_NAME IN ITEMS
+ LOCATION
+ LINK_DEPENDENT_LIBRARIES
+ LINK_INTERFACE_LIBRARIES
+ LINK_INTERFACE_LANGUAGES
+ LINK_INTERFACE_MULTIPLICITY
+ NO_SONAME
+ SONAME
+ )
+ foreach (_@PACKAGE_PREFIX@_CONFIG IN LISTS _@PACKAGE_PREFIX@_CONFIGURATIONS)
+ get_target_property (_@PACKAGE_PREFIX@_PROPERTY_VALUE ${@PACKAGE_PREFIX@_TARGET} IMPORTED_${_@PACKAGE_PREFIX@_PROPERTY_NAME}_${_@PACKAGE_PREFIX@_CONFIG})
+ if (_@PACKAGE_PREFIX@_PROPERTY_VALUE)
+ set_target_properties(@PACKAGE_NAME@ PROPERTIES
+ IMPORTED_${_@PACKAGE_PREFIX@_PROPERTY_NAME}_${_@PACKAGE_PREFIX@_CONFIG} "${_@PACKAGE_PREFIX@_PROPERTY_VALUE}"
+ )
+ endif ()
+ endforeach ()
+ endforeach ()
+ unset (_@PACKAGE_PREFIX@_CONFIGURATIONS)
+ unset (_@PACKAGE_PREFIX@_CONFIG)
+ unset (_@PACKAGE_PREFIX@_PROPERTY_NAME)
+ unset (_@PACKAGE_PREFIX@_PROPERTY_VALUE)
endif ()
# alias for default import target to be compatible with older CMake package configurations
-set (@PACKAGE_NAME@_LIBRARIES "${@PACKAGE_NAME@_TARGET}")
+set (@PACKAGE_PREFIX@_LIBRARIES "${@PACKAGE_PREFIX@_TARGET}")
+
+# set @PACKAGE_NAME@_* variables for backwards compatibility
+if (NOT "^@PACKAGE_NAME@$" STREQUAL "^@PACKAGE_PREFIX@$")
+ foreach (_@PACKAGE_PREFIX@_VARIABLE IN ITEMS
+ VERSION_STRING
+ VERSION_MAJOR
+ VERSION_MINOR
+ VERSION_PATCH
+ INCLUDE_DIR
+ LIBRARIES
+ TARGET
+ )
+ set (@PACKAGE_NAME@_${_@PACKAGE_PREFIX@_VARIABLE} "${@PACKAGE_PREFIX@_${_@PACKAGE_PREFIX@_VARIABLE}}")
+ endforeach ()
+ unset (_@PACKAGE_PREFIX@_VARIABLE)
+endif ()
# unset private variables
+unset (@PACKAGE_NAME@_FIND_COMPONENT)
unset (_INSTALL_PREFIX)
diff --git a/cmake/utils.cmake b/cmake/utils.cmake
index 9cef463..038baf3 100644
--- a/cmake/utils.cmake
+++ b/cmake/utils.cmake
@@ -11,7 +11,7 @@
endmacro ()
# ----------------------------------------------------------------------------
-## Extract version numbers from version string.
+## Extract version numbers from version string
function (version_numbers version major minor patch)
if (version MATCHES "([0-9]+)(\\.[0-9]+)?(\\.[0-9]+)?(rc[1-9][0-9]*|[a-z]+)?")
if (CMAKE_MATCH_1)
@@ -42,6 +42,73 @@
endfunction ()
# ----------------------------------------------------------------------------
+## Determine if cache entry exists
+macro (gflags_is_cached retvar varname)
+ if (DEFINED ${varname})
+ get_property (${retvar} CACHE ${varname} PROPERTY TYPE SET)
+ else ()
+ set (${retvar} FALSE)
+ endif ()
+endmacro ()
+
+# ----------------------------------------------------------------------------
+## Add gflags configuration variable
+#
+# The default value of the (cached) configuration value can be overridden either
+# on the CMake command-line or the super-project by setting the GFLAGS_<varname>
+# variable. When gflags is a subproject of another project (GFLAGS_IS_SUBPROJECT),
+# the variable is not added to the CMake cache. Otherwise it is cached.
+macro (gflags_define type varname docstring default)
+ if (ARGC GREATER 5)
+ message (FATAL_ERROR "gflags_variable: Too many macro arguments")
+ endif ()
+ if (NOT DEFINED GFLAGS_${varname})
+ if (GFLAGS_IS_SUBPROJECT AND ARGC EQUAL 5)
+ set (GFLAGS_${varname} "${ARGV4}")
+ else ()
+ set (GFLAGS_${varname} "${default}")
+ endif ()
+ endif ()
+ if (GFLAGS_IS_SUBPROJECT)
+ if (NOT DEFINED ${varname})
+ set (${varname} "${GFLAGS_${varname}}")
+ endif ()
+ else ()
+ set (${varname} "${GFLAGS_${varname}}" CACHE ${type} "${docstring}")
+ endif ()
+endmacro ()
+
+# ----------------------------------------------------------------------------
+## Set property of cached gflags configuration variable
+macro (gflags_property varname property value)
+ gflags_is_cached (_cached ${varname})
+ if (_cached)
+ if (property STREQUAL ADVANCED)
+ if (${value})
+ mark_as_advanced (FORCE ${varname})
+ else ()
+ mark_as_advanced (CLEAR ${varname})
+ endif ()
+ else ()
+ set_property (CACHE ${varname} PROPERTY "${property}" "${value}")
+ endif ()
+ endif ()
+ unset (_cached)
+endmacro ()
+
+# ----------------------------------------------------------------------------
+## Modify value of gflags configuration variable
+macro (gflags_set varname value)
+ gflags_is_cached (_cached ${varname})
+ if (_cached)
+ set_property (CACHE ${varname} PROPERTY VALUE "${value}")
+ else ()
+ set (${varname} "${value}")
+ endif ()
+ unset (_cached)
+endmacro ()
+
+# ----------------------------------------------------------------------------
## Configure public header files
function (configure_headers out)
set (tmp)
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 77b582f..2119943 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -22,9 +22,9 @@
set (type static)
endif ()
if (BUILD_gflags_LIB)
- link_libraries (gflags-${type})
+ link_libraries (gflags_${type})
else ()
- link_libraries (gflags_nothreads-${type})
+ link_libraries (gflags_nothreads_${type})
endif ()
# ----------------------------------------------------------------------------
diff --git a/test/nc/CMakeLists.txt b/test/nc/CMakeLists.txt
index e425d91..d00b07d 100644
--- a/test/nc/CMakeLists.txt
+++ b/test/nc/CMakeLists.txt
@@ -1,6 +1,6 @@
## gflags negative compilation tests
-cmake_minimum_required (VERSION 2.8)
+cmake_minimum_required (VERSION 2.8.12 FATAL_ERROR)
if (NOT TEST_NAME)
message (FATAL_ERROR "Missing TEST_NAME CMake flag")
@@ -13,4 +13,4 @@
include_directories ("${CMAKE_CURRENT_SOURCE_DIR}/..")
add_definitions (-DTEST_${TEST_NAME_UPPER})
add_executable (gflags_${TEST_NAME} gflags_nc.cc)
-target_link_libraries(gflags_${TEST_NAME} ${gflags_LIBRARIES})
+target_link_libraries(gflags_${TEST_NAME} gflags)