cmake: do not introduce a policy stack in the package config

[platform/upstream/glog.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 74c0cfe..8b491db 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,26 +8,18 @@ if (POLICY CMP0063)
   cmake_policy (SET CMP0063 NEW)
 endif (POLICY CMP0063)
 
-project (google-glog)
-
-enable_testing ()
-
-set (GLOG_MAJOR_VERSION 0)
-set (GLOG_MINOR_VERSION 3)
-set (GLOG_PATCH_VERSION 5)
-
-set (GLOG_VERSION
-  ${GLOG_MAJOR_VERSION}.${GLOG_MINOR_VERSION}.${GLOG_PATCH_VERSION})
+project(glog VERSION 0.3.5 LANGUAGES C CXX)
 
 set (CPACK_PACKAGE_NAME glog)
 set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "")
-set (CPACK_PACKAGE_VERSION_MAJOR ${GLOG_MAJOR_VERSION})
-set (CPACK_PACKAGE_VERSION_MINOR ${GLOG_MINOR_VERSION})
-set (CPACK_PACKAGE_VERSION_PATCH ${GLOG_PATCH_VERSION})
-set (CPACK_PACKAGE_VERSION ${GLOG_VERSION})
+set (CPACK_PACKAGE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
+set (CPACK_PACKAGE_VERSION_MINOR ${PROJECT_VERSION_MINOR})
+set (CPACK_PACKAGE_VERSION_PATCH ${PROJECT_VERSION_PATCH})
+set (CPACK_PACKAGE_VERSION ${PROJECT_VERSION})
 
 option (WITH_GFLAGS "Use gflags" ON)
 option (WITH_THREADS "Enable multithreading support" ON)
+option (WITH_TLS "Enable Thread Local Storage (TLS) support" ON)
 
 list (APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
 
@@ -45,7 +37,9 @@ include (CMakePackageConfigHelpers)
 include (CPack)
 include (CTest)
 include (DetermineGflagsNamespace)
+include (GNUInstallDirs)
 
+set (CMAKE_DEBUG_POSTFIX d)
 set (CMAKE_THREAD_PREFER_PTHREAD 1)
 
 if (WITH_GFLAGS)
@@ -82,6 +76,7 @@ check_include_file (syslog.h HAVE_SYSLOG_H)
 check_include_file (ucontext.h HAVE_UCONTEXT_H)
 check_include_file (unistd.h HAVE_UNISTD_H)
 check_include_file (unwind.h HAVE_UNWIND_H)
+check_include_file (pwd.h HAVE_PWD_H)
 
 check_include_file_cxx ("ext/hash_map" HAVE_EXT_HASH_MAP)
 check_include_file_cxx ("ext/hash_set" HAVE_EXT_HASH_SET)
@@ -190,6 +185,32 @@ using namespace Outer::Inner;;
 int main() { return i; }
 " HAVE_NAMESPACES)
 
+check_cxx_source_compiles ("
+__thread int tls;
+int main() { }
+" HAVE_GCC_TLS)
+
+check_cxx_source_compiles ("
+__declspec(thread) int tls;
+int main() { }
+" HAVE_MSVC_TLS)
+
+check_cxx_source_compiles ("
+thread_local int tls;
+int main() { }
+" HAVE_CXX11_TLS)
+
+if (WITH_TLS)
+  # Cygwin does not support the thread attribute. Don't bother.
+  if (HAVE_GCC_TLS)
+    set (GLOG_THREAD_LOCAL_STORAGE "__thread")
+  elseif (HAVE_MSVC_TLS)
+    set (GLOG_THREAD_LOCAL_STORAGE "__declspec(thread)")
+  elseif (HAVE_CXX11_TLS)
+    set (GLOG_THREAD_LOCAL_STORAGE thread_local)
+  endif (HAVE_GCC_TLS)
+endif (WITH_TLS)
+
 set (_PC_FIELDS
   "gregs[REG_PC]"
   "gregs[REG_EIP]"
@@ -340,7 +361,6 @@ set (CMAKE_CXX_VISIBILITY_PRESET default)
 set (CMAKE_VISIBILITY_INLINES_HIDDEN 1)
 
 set (GLOG_PUBLIC_H
-  ${CMAKE_CURRENT_BINARY_DIR}/config.h
   ${CMAKE_CURRENT_BINARY_DIR}/glog/logging.h
   ${CMAKE_CURRENT_BINARY_DIR}/glog/raw_logging.h
   ${CMAKE_CURRENT_BINARY_DIR}/glog/stl_logging.h
@@ -380,6 +400,7 @@ add_compile_options ($<$<BOOL:${HAVE_NO_UNNAMED_TYPE_TEMPLATE_ARGS}>:-Wno-unname
 add_library (glog
   ${GLOG_SRCS}
 )
+add_library(glog::glog ALIAS glog)
 
 set_target_properties (glog PROPERTIES POSITION_INDEPENDENT_CODE ON)
 
@@ -405,8 +426,8 @@ if (gflags_FOUND)
   endif (NOT BUILD_SHARED_LIBS)
 endif (gflags_FOUND)
 
-set_target_properties (glog PROPERTIES VERSION ${GLOG_MAJOR_VERSION})
-set_target_properties (glog PROPERTIES SOVERSION ${GLOG_VERSION})
+set_target_properties (glog PROPERTIES VERSION ${PROJECT_VERSION})
+set_target_properties (glog PROPERTIES SOVERSION ${PROJECT_VERSION_MAJOR})
 
 if (WIN32)
   target_compile_definitions (glog PUBLIC GLOG_NO_ABBREVIATED_SEVERITIES)
@@ -414,10 +435,15 @@ endif (WIN32)
 
 set_target_properties (glog PROPERTIES PUBLIC_HEADER "${GLOG_PUBLIC_H}")
 
+set (_glog_CMake_BINDIR ${CMAKE_INSTALL_BINDIR})
+set (_glog_CMake_INCLUDE_DIR ${CMAKE_INSTALL_INCLUDEDIR})
+set (_glog_CMake_LIBDIR ${CMAKE_INSTALL_LIBDIR})
+set (_glog_CMake_INSTALLDIR ${_glog_CMake_LIBDIR}/cmake/glog)
+
 target_include_directories (glog BEFORE PUBLIC
   "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>"
   "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>"
-  "$<INSTALL_INTERFACE:include>"
+  "$<INSTALL_INTERFACE:${_glog_CMake_INCLUDE_DIR}>"
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src)
 
@@ -559,22 +585,33 @@ endif (BUILD_TESTING)
 
 install (TARGETS glog
   EXPORT glog-targets
-  RUNTIME DESTINATION bin
-  PUBLIC_HEADER DESTINATION include/glog
-  LIBRARY DESTINATION lib
-  ARCHIVE DESTINATION lib)
+  RUNTIME DESTINATION ${_glog_CMake_BINDIR}
+  PUBLIC_HEADER DESTINATION ${_glog_CMake_INCLUDE_DIR}/glog
+  LIBRARY DESTINATION ${_glog_CMake_LIBDIR}
+  ARCHIVE DESTINATION ${_glog_CMake_LIBDIR})
+
+set (glog_CMake_VERSION 3.0)
 
 if (gflags_FOUND)
-  set (gflags_DEPENDENCY "find_dependency (gflags ${gflags_VERSION})")
+  # Ensure clients locate only the package config and not third party find
+  # modules having the same name. This avoid cmake_policy PUSH/POP errors.
+  if (CMAKE_VERSION VERSION_LESS 3.9)
+    set (gflags_DEPENDENCY "find_dependency (gflags ${gflags_VERSION})")
+  else (CMAKE_VERSION VERSION_LESS 3.9)
+    # Passing additional find_package arguments to find_dependency is possible
+    # starting with CMake 3.9.
+    set (glog_CMake_VERSION 3.9)
+    set (gflags_DEPENDENCY "find_dependency (gflags ${gflags_VERSION} NO_MODULE)")
+  endif (CMAKE_VERSION VERSION_LESS 3.9)
 endif (gflags_FOUND)
 
 configure_package_config_file (glog-config.cmake.in
   ${CMAKE_CURRENT_BINARY_DIR}/glog-config.cmake
-  INSTALL_DESTINATION lib/cmake/glog
+  INSTALL_DESTINATION ${_glog_CMake_INSTALLDIR}
   NO_CHECK_REQUIRED_COMPONENTS_MACRO)
 
 write_basic_package_version_file (glog-config-version.cmake VERSION
-  ${GLOG_VERSION} COMPATIBILITY SameMajorVersion)
+  ${PROJECT_VERSION} COMPATIBILITY SameMajorVersion)
 
 export (TARGETS glog NAMESPACE glog:: FILE glog-targets.cmake)
 export (PACKAGE glog)
@@ -582,6 +619,7 @@ export (PACKAGE glog)
 install (FILES
   ${CMAKE_CURRENT_BINARY_DIR}/glog-config.cmake
   ${CMAKE_CURRENT_BINARY_DIR}/glog-config-version.cmake
-  DESTINATION lib/cmake/glog)
+  DESTINATION ${_glog_CMake_INSTALLDIR})
 
-install (EXPORT glog-targets NAMESPACE glog:: DESTINATION lib/cmake/glog)
+install (EXPORT glog-targets NAMESPACE glog:: DESTINATION
+  ${_glog_CMake_INSTALLDIR})