From a8780e2b0cf9a47e020dd373188f58865811b2c2 Mon Sep 17 00:00:00 2001
From: Rafael Sadowski <rafael@sizeofvoid.org>
Date: Sun, 6 Dec 2020 10:42:39 +0100
Subject: [PATCH] Add options for building and installing shared, static
 libraries

---
 CMakeLists.txt | 91 +++++++++++++++++++++++++++++++++-----------------
 1 file changed, 60 insertions(+), 31 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b7d1c42f..4a84e6e8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,8 @@ project(matroska VERSION 1.6.2)
 
 option(DISABLE_PKGCONFIG "Disable PkgConfig module generation" OFF)
 option(DISABLE_CMAKE_CONFIG "Disable CMake package config module generation" OFF)
+option(DISABLE_SHARED_LIBS "Disable build and install shared libraries" OFF)
+option(DISABLE_STATIC_LIBS "Disable build and install static libraries" OFF)
 
 find_package(EBML 1.4.0 REQUIRED)
 
@@ -62,44 +64,69 @@ set (libmatroska_C_PUBLIC_HEADERS
   matroska/c/libmatroska.h
   matroska/c/libmatroska_t.h)
 
-add_library(matroska ${libmatroska_SOURCES} ${libmatroska_PUBLIC_HEADERS} ${libmatroska_C_PUBLIC_HEADERS})
-target_link_libraries(matroska PUBLIC EBML::ebml)
-set_target_properties(matroska PROPERTIES
-  VERSION 7.0.0
-  SOVERSION 7
-  CXX_VISIBILITY_PRESET hidden
-  VISIBILITY_INLINES_HIDDEN ON
-)
-target_include_directories(matroska
-  PRIVATE
-    $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
-	PUBLIC
-    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
-    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
-if(MSVC)
-  target_compile_definitions(matroska PRIVATE _CRT_SECURE_NO_WARNINGS)
+include(GenerateExportHeader)
+foreach (TYPE IN ITEMS STATIC SHARED)
+  if (NOT DISABLE_${TYPE}_LIBS)
+    set(type_suffix "")
+    if ("${TYPE}" STREQUAL "STATIC")
+      string(TOLOWER "${TYPE}" type)
+      set(type_suffix "-${type}")
+    endif()
+
+    add_library(matroska${type_suffix} ${TYPE}
+      ${libmatroska_SOURCES}
+      ${libmatroska_PUBLIC_HEADERS}
+      ${libmatroska_C_PUBLIC_HEADERS})
+
+    target_include_directories(matroska${type_suffix}
+      PRIVATE
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
+            PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+
+    if(MSVC)
+      target_compile_definitions(matroska${type_suffix}
+        PRIVATE
+          _CRT_SECURE_NO_WARNINGS)
+    endif()
+    generate_export_header(matroska${type_suffix} EXPORT_MACRO_NAME MATROSKA_DLL_API BASE_NAME matroska)
+    target_sources(matroska${type_suffix}
+      PRIVATE
+        ${CMAKE_CURRENT_BINARY_DIR}/matroska_export.h
+    )
+  endif()
+endforeach()
+
+if(NOT DISABLE_SHARED_LIBS)
+  target_link_libraries(matroska PUBLIC EBML::ebml)
+  set_target_properties(matroska PROPERTIES
+    VERSION 7.0.0
+    SOVERSION 7
+    CXX_VISIBILITY_PRESET hidden
+    VISIBILITY_INLINES_HIDDEN ON
+  )
+  install(TARGETS matroska
+    EXPORT MatroskaTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
 endif()
 
-include(GenerateExportHeader)
-generate_export_header(matroska EXPORT_MACRO_NAME MATROSKA_DLL_API)
-target_sources(matroska
-  PRIVATE
-    ${CMAKE_CURRENT_BINARY_DIR}/matroska_export.h
-)
-
-if(NOT BUILD_SHARED_LIBS)
-  target_compile_definitions(matroska PUBLIC MATROSKA_STATIC_DEFINE)
+if(NOT DISABLE_STATIC_LIBS)
+  set_target_properties(matroska-static PROPERTIES OUTPUT_NAME matroska)
+  target_compile_definitions(matroska-static PUBLIC MATROSKA_STATIC_DEFINE)
+  install(TARGETS matroska-static
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
 endif()
 
-install(TARGETS matroska
-  EXPORT MatroskaTargets
-  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-  ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
 
 install(FILES ${libmatroska_PUBLIC_HEADERS} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/matroska)
 install(FILES ${libmatroska_C_PUBLIC_HEADERS} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/matroska/c)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/matroska_export.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/matroska)
+if(NOT DISABLE_SHARED_LIBS)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/matroska_export.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/matroska)
+endif()
 
 if(NOT DISABLE_PKGCONFIG)
   set(prefix ${CMAKE_INSTALL_PREFIX})
@@ -117,7 +144,9 @@ if(NOT DISABLE_CMAKE_CONFIG)
   configure_package_config_file(MatroskaConfig.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/MatroskaConfig.cmake
     INSTALL_DESTINATION ${CMAKE_INSTALL_PACKAGEDIR})
   write_basic_package_version_file(MatroskaConfigVersion.cmake COMPATIBILITY SameMajorVersion)
+if(NOT DISABLE_SHARED_LIBS)
   install(EXPORT MatroskaTargets NAMESPACE Matroska:: DESTINATION ${CMAKE_INSTALL_PACKAGEDIR})
+endif()
   install(FILES
     ${CMAKE_CURRENT_BINARY_DIR}/MatroskaConfig.cmake
     ${CMAKE_CURRENT_BINARY_DIR}/MatroskaConfigVersion.cmake