External/yaml-cpp
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CMake: use GenerateExportHeader

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Make use of the GenerateExportHeader CMake module to generate the dll.h
header with export macros.

While the produced dll.h is different, the result should be the same,
i.e. nothing changes for yaml-cpp or its users.
This commit is contained in:
Pino Toscano 2021-04-18 10:25:08 +02:00
parent 25ed1343eb
commit 762e6f6c70
2 changed files with 11 additions and 33 deletions
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11
CMakeLists.txt
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@ -14,6 +14,7 @@ include(CMakeDependentOption)
include(CheckCXXCompilerFlag)
include(GNUInstallDirs)
include(CTest)
include(GenerateExportHeader)
find_program(YAML_CPP_CLANG_FORMAT_EXE NAMES clang-format)
@ -81,6 +82,7 @@ set_property(TARGET yaml-cpp
target_include_directories(yaml-cpp
PUBLIC
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
PRIVATE
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/src>)
@ -136,6 +138,12 @@ write_basic_package_version_file(
"${PROJECT_BINARY_DIR}/yaml-cpp-config-version.cmake"
COMPATIBILITY AnyNewerVersion)
generate_export_header(yaml-cpp
BASE_NAME YAML_CPP
EXPORT_FILE_NAME "${PROJECT_BINARY_DIR}/include/yaml-cpp/dll.h"
EXPORT_MACRO_NAME YAML_CPP_API
)
configure_file(yaml-cpp.pc.in yaml-cpp.pc @ONLY)
if (YAML_CPP_INSTALL)
@ -145,6 +153,9 @@ if (YAML_CPP_INSTALL)
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
install(DIRECTORY ${PROJECT_SOURCE_DIR}/include/
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
FILES_MATCHING PATTERN "*.h")
install(DIRECTORY ${PROJECT_BINARY_DIR}/include/
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
FILES_MATCHING PATTERN "*.h")
install(EXPORT yaml-cpp-targets

33
include/yaml-cpp/dll.h
View File

@ -1,33 +0,0 @@
#ifndef DLL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
#define DLL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
#if defined(_MSC_VER) || \
(defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
(__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
#pragma once
#endif
// The following ifdef block is the standard way of creating macros which make
// exporting from a DLL simpler. All files within this DLL are compiled with the
// yaml_cpp_EXPORTS symbol defined on the command line. This symbol should not
// be defined on any project that uses this DLL. This way any other project
// whose source files include this file see YAML_CPP_API functions as being
// imported from a DLL, whereas this DLL sees symbols defined with this macro as
// being exported.
#undef YAML_CPP_API
#ifdef YAML_CPP_DLL // Using or Building YAML-CPP DLL (definition defined
// manually)
#ifdef yaml_cpp_EXPORTS // Building YAML-CPP DLL (definition created by CMake
// or defined manually)
// #pragma message( "Defining YAML_CPP_API for DLL export" )
#define YAML_CPP_API __declspec(dllexport)
#else // yaml_cpp_EXPORTS
// #pragma message( "Defining YAML_CPP_API for DLL import" )
#define YAML_CPP_API __declspec(dllimport)
#endif // yaml_cpp_EXPORTS
#else // YAML_CPP_DLL
#define YAML_CPP_API
#endif // YAML_CPP_DLL
#endif // DLL_H_62B23520_7C8E_11DE_8A39_0800200C9A66