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1cmake_minimum_required(VERSION 3.0)
2project(double-conversion VERSION 3.1.5)
3
4if(BUILD_SHARED_LIBS AND MSVC)
5  set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
6endif()
7
8set(headers
9    double-conversion/bignum.h
10    double-conversion/cached-powers.h
11    double-conversion/diy-fp.h
12    double-conversion/double-conversion.h
13    double-conversion/double-to-string.h
14    double-conversion/fast-dtoa.h
15    double-conversion/fixed-dtoa.h
16    double-conversion/ieee.h
17    double-conversion/string-to-double.h
18    double-conversion/strtod.h
19    double-conversion/utils.h)
20
21add_library(double-conversion
22            double-conversion/bignum.cc
23            double-conversion/bignum-dtoa.cc
24            double-conversion/cached-powers.cc
25            double-conversion/double-to-string.cc
26            double-conversion/fast-dtoa.cc
27            double-conversion/fixed-dtoa.cc
28            double-conversion/string-to-double.cc
29            double-conversion/strtod.cc
30            ${headers})
31target_include_directories(
32    double-conversion PUBLIC
33    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>)
34
35# pick a version #
36set_target_properties(double-conversion PROPERTIES VERSION ${PROJECT_VERSION} SOVERSION 3)
37
38# set up testing if requested
39option(BUILD_TESTING "Build test programs" OFF)
40if(BUILD_TESTING)
41  enable_testing()
42  include(CTest)
43  add_subdirectory(test)
44endif()
45
46####
47# Installation (https://github.com/forexample/package-example)
48
49include(GNUInstallDirs)
50
51# Layout. This works for all platforms:
52#   * <prefix>/lib/cmake/<PROJECT-NAME>
53#   * <prefix>/lib/
54#   * <prefix>/include/
55set(config_install_dir "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
56
57set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
58
59# Configuration
60set(version_config "${generated_dir}/${PROJECT_NAME}ConfigVersion.cmake")
61set(project_config "${generated_dir}/${PROJECT_NAME}Config.cmake")
62set(targets_export_name "${PROJECT_NAME}Targets")
63set(namespace "${PROJECT_NAME}::")
64
65# Include module with function 'write_basic_package_version_file'
66include(CMakePackageConfigHelpers)
67
68# Configure '<PROJECT-NAME>ConfigVersion.cmake'
69# Note: PROJECT_VERSION is used as a VERSION
70write_basic_package_version_file(
71    "${version_config}" COMPATIBILITY SameMajorVersion
72)
73
74# Configure '<PROJECT-NAME>Config.cmake'
75# Use variables:
76#   * targets_export_name
77#   * PROJECT_NAME
78configure_package_config_file(
79    "cmake/Config.cmake.in"
80    "${project_config}"
81    INSTALL_DESTINATION "${config_install_dir}"
82)
83
84# Targets:
85#   * <prefix>/lib/libdouble-conversion.a
86#   * header location after install: <prefix>/include/double-conversion/*.h
87#   * headers can be included by C++ code `#include <double-conversion/*.h>`
88install(
89    TARGETS double-conversion
90    EXPORT "${targets_export_name}"
91    LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
92    ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
93    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
94    INCLUDES DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
95)
96
97# Headers:
98#   * double-conversion/*.h -> <prefix>/include/double-conversion/*.h
99install(
100    FILES ${headers}
101    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/double-conversion"
102)
103
104# Config
105#   * <prefix>/lib/cmake/double-conversion/double-conversionConfig.cmake
106#   * <prefix>/lib/cmake/double-conversion/double-conversionConfigVersion.cmake
107install(
108    FILES "${project_config}" "${version_config}"
109    DESTINATION "${config_install_dir}"
110)
111
112# Config
113#   * <prefix>/lib/cmake/double-conversion/double-conversionTargets.cmake
114install(
115    EXPORT "${targets_export_name}"
116    NAMESPACE "${namespace}"
117    DESTINATION "${config_install_dir}"
118)
119