Add possibility to selectively enable / disable builing of different targets.

CMakeLists.txt

@@ -15,6 +15,9 @@ option(MI_LOCAL_DYNAMIC_TLS "Use slightly slower, dlopen-compatible TLS mechanis
 option(MI_BUILD_TESTS       "Build test executables" ON)
 option(MI_CHECK_FULL        "Use full internal invariant checking in DEBUG mode (deprecated, use MI_DEBUG_FULL instead)" OFF)
 option(MI_PADDING           "Enable padding to detect heap block overflow (only in debug mode)" ON)
+option(MI_BUILD_SHARED      "Build shared library" ON)
+option(MI_BUILD_STATIC      "Build static library" ON)
+option(MI_BUILD_OBJECT      "Build object" ON)
 
 include("cmake/mimalloc-config-version.cmake")
 
@@ -180,6 +183,9 @@ message(STATUS "")
 # -----------------------------------------------------------------------------
 
 # shared library
+if(MI_BUILD_SHARED)
+  message(STATUS "Shared library will be built")
+
   add_library(mimalloc SHARED ${mi_sources})
   set_target_properties(mimalloc PROPERTIES VERSION ${mi_version} OUTPUT_NAME ${mi_basename} )
   target_compile_definitions(mimalloc PRIVATE ${mi_defines} MI_SHARED_LIB MI_SHARED_LIB_EXPORT)
@@ -197,7 +203,14 @@ if(WIN32)
       COMMENT "Copy mimalloc-redirect.dll to output directory")
   endif()
 
+  install(TARGETS mimalloc EXPORT mimalloc DESTINATION ${mi_install_dir} LIBRARY)
+  install(EXPORT mimalloc DESTINATION ${mi_install_dir}/cmake)
+endif()
+
 # static library
+if (MI_BUILD_STATIC)
+  message(STATUS "Static library will be built")
+
   add_library(mimalloc-static STATIC ${mi_sources})
   target_compile_definitions(mimalloc-static PRIVATE ${mi_defines} MI_STATIC_LIB)
   target_compile_options(mimalloc-static PRIVATE ${mi_cflags})
@@ -206,7 +219,7 @@ target_include_directories(mimalloc-static PUBLIC
       $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
       $<INSTALL_INTERFACE:${mi_install_dir}/include>
   )
-if(WIN32)
+  if(WIN32 AND MI_BUILD_SHARED)
     # When building both static and shared libraries on Windows, a static library should use a
     # different output name to avoid the conflict with the import library of a shared one.
     string(REPLACE "mimalloc" "mimalloc-static" mi_output_name ${mi_basename})
@@ -215,17 +228,17 @@ else()
     set_target_properties(mimalloc-static PROPERTIES OUTPUT_NAME ${mi_basename})
   endif()
 
-# install static and shared library, and the include files
-install(TARGETS mimalloc EXPORT mimalloc DESTINATION ${mi_install_dir} LIBRARY)
   install(TARGETS mimalloc-static EXPORT mimalloc DESTINATION ${mi_install_dir})
+endif()
+
+# install include files
 install(FILES include/mimalloc.h DESTINATION ${mi_install_dir}/include)
 install(FILES include/mimalloc-override.h DESTINATION ${mi_install_dir}/include)
 install(FILES include/mimalloc-new-delete.h DESTINATION ${mi_install_dir}/include)
 install(FILES cmake/mimalloc-config.cmake DESTINATION ${mi_install_dir}/cmake)
 install(FILES cmake/mimalloc-config-version.cmake DESTINATION ${mi_install_dir}/cmake)
-install(EXPORT mimalloc DESTINATION ${mi_install_dir}/cmake)
 
-if(NOT WIN32)
+if(NOT WIN32 AND MI_BUILD_SHARED)
   # install a symlink in the /usr/local/lib to the versioned library
   set(mi_symlink "${CMAKE_SHARED_MODULE_PREFIX}${mi_basename}${CMAKE_SHARED_LIBRARY_SUFFIX}")
   set(mi_soname "mimalloc-${mi_version}/${mi_symlink}.${mi_version}")
@@ -234,6 +247,9 @@ if(NOT WIN32)
 endif()
 
 # single object file for more predictable static overriding
+if (MI_BUILD_OBJECT)
+  message(STATUS "Library object will be built")
+
   add_library(mimalloc-obj OBJECT src/static.c)
   target_compile_definitions(mimalloc-obj PRIVATE ${mi_defines})
   target_compile_options(mimalloc-obj PRIVATE ${mi_cflags})
@@ -250,6 +266,7 @@ target_include_directories(mimalloc-obj PUBLIC
   install(FILES ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/mimalloc-obj.dir/src/static.c${CMAKE_C_OUTPUT_EXTENSION}
          DESTINATION ${mi_install_dir}
           RENAME ${mi_basename}${CMAKE_C_OUTPUT_EXTENSION} )
+endif()
 
 # -----------------------------------------------------------------------------
 # API surface testing
@@ -277,10 +294,16 @@ endif()
 # Set override properties
 # -----------------------------------------------------------------------------
 if (MI_OVERRIDE MATCHES "ON")
+  if (MI_BUILD_SHARED)
     target_compile_definitions(mimalloc PRIVATE MI_MALLOC_OVERRIDE)
+  endif()
   if(NOT WIN32)
     # It is only possible to override malloc on Windows when building as a DLL.
+    if (MI_BUILD_STATIC)
       target_compile_definitions(mimalloc-static PRIVATE MI_MALLOC_OVERRIDE)
+    endif()
+    if (MI_BUILD_OBJECT)
       target_compile_definitions(mimalloc-obj PRIVATE MI_MALLOC_OVERRIDE)
     endif()
   endif()
+endif()