Meta: Guard everything that installs headers with an option

Ladybird/CMakeLists.txt

@@ -78,10 +78,12 @@ if (APPLE)
     target_link_libraries(ladybird PRIVATE LibThreading)
 endif()
 
-target_sources(ladybird PUBLIC FILE_SET ladybird TYPE HEADERS
-    BASE_DIRS ${LADYBIRD_SOURCE_DIR}
-    FILES ${LADYBIRD_HEADERS}
-)
+if (ENABLE_INSTALL_HEADERS)
+    target_sources(ladybird PUBLIC FILE_SET ladybird TYPE HEADERS
+        BASE_DIRS ${LADYBIRD_SOURCE_DIR}
+        FILES ${LADYBIRD_HEADERS}
+    )
+endif()
 
 if (TARGET ladybird_impl)
     set(LADYBIRD_TARGET ladybird_impl PUBLIC)

Meta/CMake/code_generators.cmake

@@ -41,6 +41,8 @@ function(compile_ipc source output)
     add_dependencies(all_generated generate_${output_name})
 
     cmake_path(RELATIVE_PATH CMAKE_CURRENT_SOURCE_DIR BASE_DIRECTORY ${SerenityOS_SOURCE_DIR} OUTPUT_VARIABLE current_source_dir_relative)
-    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${output} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${current_source_dir_relative}" OPTIONAL)
+    if (ENABLE_INSTALL_HEADERS)
+        install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${output} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${current_source_dir_relative}" OPTIONAL)
+    endif()
 endfunction()
 

Meta/CMake/common_options.cmake

@@ -35,3 +35,5 @@ serenity_option(ENABLE_CLANG_PLUGINS_INVALID_FUNCTION_MEMBERS OFF CACHE BOOL "En
 
 serenity_option(ENABLE_GUI_TARGETS ON CACHE BOOL "Enable building GUI targets")
 serenity_option(ENABLE_SWIFT OFF CACHE BOOL "Enable building Swift files")
+
+serenity_option(ENABLE_INSTALL_HEADERS ON CACHE BOOL "Enable installing headers")

Meta/CMake/libtextcodec_generators.cmake

@@ -11,5 +11,7 @@ function (generate_encoding_indexes)
         arguments -j "${LIBTEXTCODEC_INPUT_FOLDER}/indexes.json"
     )
 
-    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/LookupTables.h" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/LibTextCodec/")
+    if (ENABLE_INSTALL_HEADERS)
+        install(FILES "${CMAKE_CURRENT_BINARY_DIR}/LookupTables.h" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/LibTextCodec/")
+    endif()
 endfunction()

Meta/CMake/libweb_generators.cmake

@@ -96,17 +96,19 @@ function (generate_css_implementation)
         NAMESPACE "Web::CSS"
     )
 
-    set(CSS_GENERATED_TO_INSTALL
-        "CSS/Enums.h"
-        "CSS/MathFunctions.h"
-        "CSS/MediaFeatureID.h"
-        "CSS/PropertyID.h"
-        "CSS/PseudoClass.h"
-        "CSS/TransformFunctions.h"
-        "CSS/ValueID.h"
-    )
-    list(TRANSFORM CSS_GENERATED_TO_INSTALL PREPEND "${CMAKE_CURRENT_BINARY_DIR}/")
-    install(FILES ${CSS_GENERATED_TO_INSTALL} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/LibWeb/CSS")
+    if (ENABLE_INSTALL_HEADERS)
+        set(CSS_GENERATED_TO_INSTALL
+            "CSS/Enums.h"
+            "CSS/MathFunctions.h"
+            "CSS/MediaFeatureID.h"
+            "CSS/PropertyID.h"
+            "CSS/PseudoClass.h"
+            "CSS/TransformFunctions.h"
+            "CSS/ValueID.h"
+        )
+        list(TRANSFORM CSS_GENERATED_TO_INSTALL PREPEND "${CMAKE_CURRENT_BINARY_DIR}/")
+        install(FILES ${CSS_GENERATED_TO_INSTALL} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/LibWeb/CSS")
+    endif()
 
 endfunction()
 
@@ -173,9 +175,11 @@ function (generate_js_bindings target)
         add_dependencies(all_generated generate_${basename})
         add_dependencies(${target} generate_${basename})
 
-        # install generated sources
-        list(FILTER BINDINGS_SOURCES INCLUDE REGEX "\.h$")
-        install(FILES ${BINDINGS_SOURCES} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/LibWeb/Bindings")
+        if (ENABLE_INSTALL_HEADERS)
+            # install generated sources
+            list(FILTER BINDINGS_SOURCES INCLUDE REGEX "\.h$")
+            install(FILES ${BINDINGS_SOURCES} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/LibWeb/Bindings")
+        endif()
 
         list(APPEND LIBWEB_ALL_IDL_FILES "${LIBWEB_INPUT_FOLDER}/${class}.idl")
         set(LIBWEB_ALL_IDL_FILES ${LIBWEB_ALL_IDL_FILES} PARENT_SCOPE)
@@ -208,9 +212,11 @@ function (generate_js_bindings target)
         add_dependencies(all_generated generate_exposed_interfaces)
         add_dependencies(${target} generate_exposed_interfaces)
 
-        list(FILTER exposed_interface_sources INCLUDE REGEX "\.h$")
-        list(TRANSFORM exposed_interface_sources PREPEND "${CMAKE_CURRENT_BINARY_DIR}/")
-        install(FILES ${exposed_interface_sources} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/LibWeb/Bindings")
+        if (ENABLE_INSTALL_HEADERS)
+            list(FILTER exposed_interface_sources INCLUDE REGEX "\.h$")
+            list(TRANSFORM exposed_interface_sources PREPEND "${CMAKE_CURRENT_BINARY_DIR}/")
+            install(FILES ${exposed_interface_sources} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/LibWeb/Bindings")
+        endif()
     endfunction()
 
     include("idl_files.cmake")

Meta/Lagom/CMakeLists.txt

@@ -228,19 +228,23 @@ function(lagom_lib target_name fs_name)
     endif()
 
     # FIXME: Clean these up so that we don't need so many include dirs
-    target_include_directories(${target_name} INTERFACE
-        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/Services>
-        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/Userland/Libraries>
-        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/Userland/Services>
-    )
+    if (ENABLE_INSTALL_HEADERS)
+        target_include_directories(${target_name} INTERFACE
+            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/Services>
+            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/Userland/Libraries>
+            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/Userland/Services>
+        )
+    endif()
     add_lagom_library_install_rules(${target_name} ALIAS_NAME ${library})
-    # FIXME: Move this to serenity_install_headers
-    install(
-        DIRECTORY "${SERENITY_PROJECT_ROOT}/Userland/Libraries/Lib${library}"
-        COMPONENT Lagom_Development
-        DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-        FILES_MATCHING PATTERN "*.h"
-    )
+    if (ENABLE_INSTALL_HEADERS)
+        # FIXME: Move this to serenity_install_headers
+        install(
+            DIRECTORY "${SERENITY_PROJECT_ROOT}/Userland/Libraries/Lib${library}"
+            COMPONENT Lagom_Development
+            DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+            FILES_MATCHING PATTERN "*.h"
+        )
+    endif()
     serenity_generated_sources(${target_name})
 endfunction()
 
@@ -347,18 +351,20 @@ add_serenity_subdirectory(Userland/Libraries/LibFileSystem)
 add_serenity_subdirectory(Userland/Libraries/LibIDL)
 
 # Manually install AK headers
-install(
-    DIRECTORY "${SERENITY_PROJECT_ROOT}/AK"
-    COMPONENT Lagom_Development
-    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-    FILES_MATCHING PATTERN "*.h"
-)
-install(FILES
-    ${Lagom_BINARY_DIR}/AK/Debug.h
-    ${Lagom_BINARY_DIR}/AK/Backtrace.h
-    COMPONENT Lagom_Development
-    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/AK"
-)
+if (ENABLE_INSTALL_HEADERS)
+    install(
+        DIRECTORY "${SERENITY_PROJECT_ROOT}/AK"
+        COMPONENT Lagom_Development
+        DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+        FILES_MATCHING PATTERN "*.h"
+    )
+    install(FILES
+        ${Lagom_BINARY_DIR}/AK/Debug.h
+        ${Lagom_BINARY_DIR}/AK/Backtrace.h
+        COMPONENT Lagom_Development
+        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/AK"
+    )
+endif()
 
 # Code Generators and other host tools
 if (BUILD_LAGOM_TOOLS)

Userland/Libraries/LibGfx/CMakeLists.txt

@@ -83,8 +83,10 @@ add_custom_target(generate_tiff_files_handler DEPENDS ${generated_sources})
 add_dependencies(all_generated generate_tiff_files_handler)
 add_dependencies(LibGfx generate_tiff_files_handler)
 
-list(TRANSFORM generated_sources PREPEND "${CMAKE_CURRENT_BINARY_DIR}/")
-install(FILES ${generated_sources} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/LibGfx/ImageFormats")
+if (ENABLE_INSTALL_HEADERS)
+    list(TRANSFORM generated_sources PREPEND "${CMAKE_CURRENT_BINARY_DIR}/")
+    install(FILES ${generated_sources} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/LibGfx/ImageFormats")
+endif()
 
 # Third-party
 find_package(PkgConfig)

Userland/Libraries/LibWebView/CMakeLists.txt

@@ -55,16 +55,18 @@ target_compile_definitions(LibWebView PRIVATE ENABLE_PUBLIC_SUFFIX=$<BOOL:${ENAB
 find_package(SQLite3 REQUIRED)
 target_link_libraries(LibWebView PRIVATE SQLite::SQLite3)
 
-foreach(header ${GENERATED_SOURCES})
-    get_filename_component(extension ${header} EXT)
-    if (NOT "${extension}" STREQUAL ".h")
-        continue()
-    endif()
+if (ENABLE_INSTALL_HEADERS)
+    foreach(header ${GENERATED_SOURCES})
+        get_filename_component(extension ${header} EXT)
+        if (NOT "${extension}" STREQUAL ".h")
+            continue()
+        endif()
 
-    get_filename_component(subdirectory ${header} DIRECTORY)
-    string(REGEX REPLACE "^\\.\\./\\.\\./" "" subdirectory "${subdirectory}")
+        get_filename_component(subdirectory ${header} DIRECTORY)
+        string(REGEX REPLACE "^\\.\\./\\.\\./" "" subdirectory "${subdirectory}")
 
-    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${header}" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${subdirectory}")
-endforeach()
+        install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${header}" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${subdirectory}")
+    endforeach()
 
-install(FILES "${SERENITY_PROJECT_ROOT}/Userland/Services/RequestServer/ConnectionCache.h" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/RequestServer")
+    install(FILES "${SERENITY_PROJECT_ROOT}/Userland/Services/RequestServer/ConnectionCache.h" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/RequestServer")
+endif()