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enh: Set GFLAGS_IS_A_DLL in INTERFACE_COMPILE_DEFINITIONS

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This commit is contained in:
Andreas Schuh 2016-11-25 08:25:09 +00:00
parent 18469830ae
commit 5dcdc21bb9
3 changed files with 31 additions and 27 deletions
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36
CMakeLists.txt
View file

@ -368,8 +368,10 @@ if (NOT DEFINED GFLAGS_ATTRIBUTE_UNUSED)
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
# headers of the API for use of this shared library rather than the optionally
# also build statically linked library; users can override GFLAGS_DLL_DECL
# in particular, this done by setting the INTERFACE_COMPILE_DEFINITIONS of
# static libraries to include an empty definition for GFLAGS_DLL_DECL
if (NOT DEFINED GFLAGS_IS_A_DLL)
if (BUILD_SHARED_LIBS)
set (GFLAGS_IS_A_DLL 1)
@ -433,39 +435,37 @@ foreach (TYPE IN ITEMS STATIC SHARED)
# 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} ${PUBLIC_HDRS})
set (target_name "gflags${opts}_${type}")
add_library (${target_name} ${TYPE} ${GFLAGS_SRCS} ${PRIVATE_HDRS} ${PUBLIC_HDRS})
set_target_properties (${target_name} PROPERTIES
OUTPUT_NAME "gflags${opts}${type_suffix}"
VERSION "${PACKAGE_VERSION}"
SOVERSION "${PACKAGE_SOVERSION}"
)
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 (${target_name}
PUBLIC "${include_dirs}"
PRIVATE "${PROJECT_SOURCE_DIR}/src;${PROJECT_BINARY_DIR}/include/${GFLAGS_INCLUDE_DIR}"
)
target_compile_definitions (${target_name} PUBLIC GFLAGS_IS_A_DLL=${GFLAGS_IS_A_DLL})
if (opts MATCHES "nothreads")
set (defines "GFLAGS_IS_A_DLL=${GFLAGS_IS_A_DLL};NO_THREADS")
else ()
set (defines "GFLAGS_IS_A_DLL=${GFLAGS_IS_A_DLL}")
if (CMAKE_USE_PTHREADS_INIT)
target_link_libraries (gflags${opts}_${type} ${CMAKE_THREAD_LIBS_INIT})
endif ()
target_compile_definitions (${target_name} PRIVATE NO_THREADS)
elseif (CMAKE_USE_PTHREADS_INIT)
target_link_libraries (${target_name} ${CMAKE_THREAD_LIBS_INIT})
endif ()
set_target_properties (
gflags${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 (${target_name} shlwapi.lib)
endif ()
list (APPEND TARGETS gflags${opts}_${type})
list (APPEND TARGETS ${target_name})
# add convenience make target for build of both shared and static libraries
if (NOT GFLAGS_IS_SUBPROJECT)
if (NOT TARGET gflags${opts})
add_custom_target (gflags${opts})
endif ()
add_dependencies (gflags${opts} gflags${opts}_${type})
add_dependencies (gflags${opts} ${target_name})
endif ()
endif ()
endforeach ()

5
src/config.h.in
View file

@ -87,11 +87,6 @@
// ---------------------------------------------------------------------------
// Windows
// Whether gflags library is a DLL.
#ifndef GFLAGS_IS_A_DLL
# define GFLAGS_IS_A_DLL 0
#endif
// Always export symbols when compiling a shared library as this file is only
// included by internal modules when building the gflags library itself.
// The gflags_declare.h header file will set it to import these symbols otherwise.

17
src/gflags_declare.h.in
View file

@ -45,18 +45,27 @@
// ---------------------------------------------------------------------------
// Windows DLL import/export.
// We always want to import the symbols of the gflags library
// Whether gflags library is a DLL.
//
// Set to 1 by default when the shared gflags library was built on Windows.
// Must be overwritten when this header file is used with the optionally also
// built static library instead; set by CMake's INTERFACE_COMPILE_DEFINITIONS.
#ifndef GFLAGS_IS_A_DLL
# define GFLAGS_IS_A_DLL @GFLAGS_IS_A_DLL@
#endif
// We always want to import the symbols of the gflags library.
#ifndef GFLAGS_DLL_DECL
# if @GFLAGS_IS_A_DLL@ && defined(_MSC_VER)
# if GFLAGS_IS_A_DLL && defined(_MSC_VER)
# define GFLAGS_DLL_DECL __declspec(dllimport)
# else
# define GFLAGS_DLL_DECL
# endif
#endif
// We always want to import variables declared in user code
// We always want to import variables declared in user code.
#ifndef GFLAGS_DLL_DECLARE_FLAG
# if @GFLAGS_IS_A_DLL@ && defined(_MSC_VER)
# if GFLAGS_IS_A_DLL && defined(_MSC_VER)
# define GFLAGS_DLL_DECLARE_FLAG __declspec(dllimport)
# else
# define GFLAGS_DLL_DECLARE_FLAG