mirror of
https://github.com/ghostty-org/ghostty.git
synced 2026-04-06 07:38:21 +00:00
7d31d9b57f
Ninja requires all produced files to be listed as explicit outputs of custom commands. The zig build produces a .lib import library alongside the DLL, but it was not listed in the OUTPUT directive. This causes Ninja to fail with "missing and no known rule to make it" when IMPORTED_IMPLIB references the .lib file. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
226 lines
8.2 KiB
CMake
226 lines
8.2 KiB
CMake
# CMake wrapper for libghostty-vt
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#
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# This file delegates to `zig build -Demit-lib-vt` to produce the shared library,
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# headers, and pkg-config file. It exists so that CMake-based projects can
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# consume libghostty-vt without interacting with the Zig build system
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# directly. However, downstream users do still require `zig` on the PATH.
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# Please consult the Ghostty docs for the required Zig version:
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#
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# https://ghostty.org/docs/install/build
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#
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# Building within the Ghostty repo
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# ---------------------------------
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#
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# cmake -B build
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# cmake --build build
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# cmake --install build --prefix /usr/local
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#
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# Pass extra flags to the Zig build with GHOSTTY_ZIG_BUILD_FLAGS:
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#
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# cmake -B build -DGHOSTTY_ZIG_BUILD_FLAGS="-Demit-macos-app=false"
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#
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# Integrating into a downstream CMake project
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# ---------------------------------------------
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#
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# Option 1 — FetchContent (recommended, no manual install step):
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#
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# include(FetchContent)
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# FetchContent_Declare(ghostty
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# GIT_REPOSITORY https://github.com/ghostty-org/ghostty.git
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# GIT_TAG main
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# )
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# FetchContent_MakeAvailable(ghostty)
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#
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# target_link_libraries(myapp PRIVATE ghostty-vt) # shared
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# target_link_libraries(myapp PRIVATE ghostty-vt-static) # static
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#
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# To use a local checkout instead of fetching:
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#
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# cmake -B build -DFETCHCONTENT_SOURCE_DIR_GHOSTTY=/path/to/ghostty
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#
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# Option 2 — find_package (after installing to a prefix):
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#
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# find_package(ghostty-vt REQUIRED)
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# target_link_libraries(myapp PRIVATE ghostty-vt::ghostty-vt) # shared
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# target_link_libraries(myapp PRIVATE ghostty-vt::ghostty-vt-static) # static
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#
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# See dist/cmake/README.md for more details and example/c-vt-cmake/ for a
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# complete working example.
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cmake_minimum_required(VERSION 3.19)
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project(ghostty-vt VERSION 0.1.0 LANGUAGES C)
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# --- Options ----------------------------------------------------------------
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set(GHOSTTY_ZIG_BUILD_FLAGS "" CACHE STRING "Additional flags to pass to zig build")
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# Map CMake build types to Zig optimization levels.
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if(CMAKE_BUILD_TYPE)
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string(TOUPPER "${CMAKE_BUILD_TYPE}" _bt)
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if(_bt STREQUAL "RELEASE" OR _bt STREQUAL "MINSIZEREL" OR _bt STREQUAL "RELWITHDEBINFO")
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list(APPEND GHOSTTY_ZIG_BUILD_FLAGS "-Doptimize=ReleaseFast")
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endif()
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unset(_bt)
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endif()
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# --- Find Zig ----------------------------------------------------------------
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find_program(ZIG_EXECUTABLE zig REQUIRED)
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message(STATUS "Found zig: ${ZIG_EXECUTABLE}")
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# --- Build via zig build -----------------------------------------------------
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# The zig build installs into zig-out/ relative to the source tree.
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set(ZIG_OUT_DIR "${CMAKE_CURRENT_SOURCE_DIR}/zig-out")
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# Shared library names (zig build produces both shared and static).
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if(APPLE)
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set(GHOSTTY_VT_LIBNAME "${CMAKE_SHARED_LIBRARY_PREFIX}ghostty-vt${CMAKE_SHARED_LIBRARY_SUFFIX}")
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set(GHOSTTY_VT_SONAME "${CMAKE_SHARED_LIBRARY_PREFIX}ghostty-vt.0${CMAKE_SHARED_LIBRARY_SUFFIX}")
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set(GHOSTTY_VT_REALNAME "${CMAKE_SHARED_LIBRARY_PREFIX}ghostty-vt.0.1.0${CMAKE_SHARED_LIBRARY_SUFFIX}")
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elseif(WIN32)
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set(GHOSTTY_VT_LIBNAME "ghostty-vt.dll")
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set(GHOSTTY_VT_REALNAME "ghostty-vt.dll")
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set(GHOSTTY_VT_IMPLIB "ghostty-vt.lib")
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else()
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set(GHOSTTY_VT_LIBNAME "${CMAKE_SHARED_LIBRARY_PREFIX}ghostty-vt${CMAKE_SHARED_LIBRARY_SUFFIX}")
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set(GHOSTTY_VT_SONAME "${CMAKE_SHARED_LIBRARY_PREFIX}ghostty-vt${CMAKE_SHARED_LIBRARY_SUFFIX}.0")
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set(GHOSTTY_VT_REALNAME "${CMAKE_SHARED_LIBRARY_PREFIX}ghostty-vt${CMAKE_SHARED_LIBRARY_SUFFIX}.0.1.0")
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endif()
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if(WIN32)
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set(GHOSTTY_VT_SHARED_LIBRARY "${ZIG_OUT_DIR}/bin/${GHOSTTY_VT_REALNAME}")
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else()
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set(GHOSTTY_VT_SHARED_LIBRARY "${ZIG_OUT_DIR}/lib/${GHOSTTY_VT_REALNAME}")
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endif()
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# Static library name.
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# On Windows, the static lib is named "ghostty-vt-static.lib" to avoid
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# colliding with the DLL import library "ghostty-vt.lib".
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if(WIN32)
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set(GHOSTTY_VT_STATIC_REALNAME "ghostty-vt-static.lib")
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else()
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set(GHOSTTY_VT_STATIC_REALNAME "libghostty-vt.a")
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endif()
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set(GHOSTTY_VT_STATIC_LIBRARY "${ZIG_OUT_DIR}/lib/${GHOSTTY_VT_STATIC_REALNAME}")
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# Ensure the output directories exist so CMake doesn't reject the
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# INTERFACE_INCLUDE_DIRECTORIES before the zig build has run.
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file(MAKE_DIRECTORY "${ZIG_OUT_DIR}/include")
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# Custom command: run zig build -Demit-lib-vt (produces both shared and static)
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add_custom_command(
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OUTPUT "${GHOSTTY_VT_SHARED_LIBRARY}" "${GHOSTTY_VT_STATIC_LIBRARY}" "${ZIG_OUT_DIR}/lib/${GHOSTTY_VT_IMPLIB}"
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COMMAND "${ZIG_EXECUTABLE}" build -Demit-lib-vt ${GHOSTTY_ZIG_BUILD_FLAGS}
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WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
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COMMENT "Building libghostty-vt via zig build..."
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USES_TERMINAL
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)
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add_custom_target(zig_build_lib_vt ALL
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DEPENDS "${GHOSTTY_VT_SHARED_LIBRARY}" "${GHOSTTY_VT_STATIC_LIBRARY}"
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)
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# --- IMPORTED library targets ------------------------------------------------
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# Shared
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add_library(ghostty-vt SHARED IMPORTED GLOBAL)
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set_target_properties(ghostty-vt PROPERTIES
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IMPORTED_LOCATION "${GHOSTTY_VT_SHARED_LIBRARY}"
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INTERFACE_INCLUDE_DIRECTORIES "${ZIG_OUT_DIR}/include"
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)
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if(APPLE)
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set_target_properties(ghostty-vt PROPERTIES
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IMPORTED_SONAME "@rpath/${GHOSTTY_VT_SONAME}"
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)
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elseif(WIN32)
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set_target_properties(ghostty-vt PROPERTIES
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IMPORTED_IMPLIB "${ZIG_OUT_DIR}/lib/${GHOSTTY_VT_IMPLIB}"
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)
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else()
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set_target_properties(ghostty-vt PROPERTIES
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IMPORTED_SONAME "${GHOSTTY_VT_SONAME}"
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)
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endif()
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add_dependencies(ghostty-vt zig_build_lib_vt)
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# Static
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#
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# When linking the static library, consumers must also link its transitive
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# dependencies. By default (with SIMD enabled), these are:
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# - libc
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# - libc++ (or libstdc++ on Linux)
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# - highway
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# - simdutf
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#
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# Building with -Dsimd=false removes the C++ / highway / simdutf
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# dependencies, leaving only libc.
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add_library(ghostty-vt-static STATIC IMPORTED GLOBAL)
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set_target_properties(ghostty-vt-static PROPERTIES
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IMPORTED_LOCATION "${GHOSTTY_VT_STATIC_LIBRARY}"
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INTERFACE_INCLUDE_DIRECTORIES "${ZIG_OUT_DIR}/include"
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)
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if(WIN32)
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# On Windows, the Zig standard library uses NT API functions
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# (NtClose, NtCreateSection, etc.) and kernel32 functions that
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# consumers must link when using the static library.
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set_target_properties(ghostty-vt-static PROPERTIES
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INTERFACE_LINK_LIBRARIES "ntdll;kernel32"
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)
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endif()
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add_dependencies(ghostty-vt-static zig_build_lib_vt)
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# --- Install ------------------------------------------------------------------
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include(GNUInstallDirs)
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# Install shared library
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if(WIN32)
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# On Windows, install the DLL and PDB to bin/ and the import library to lib/
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install(FILES "${GHOSTTY_VT_SHARED_LIBRARY}" "${ZIG_OUT_DIR}/bin/ghostty-vt.pdb" TYPE BIN)
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install(FILES "${ZIG_OUT_DIR}/lib/${GHOSTTY_VT_IMPLIB}" TYPE LIB)
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else()
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install(FILES "${GHOSTTY_VT_SHARED_LIBRARY}" TYPE LIB)
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# Install symlinks
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install(CODE "
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execute_process(COMMAND \${CMAKE_COMMAND} -E create_symlink
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\"${GHOSTTY_VT_REALNAME}\"
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\"\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/${GHOSTTY_VT_SONAME}\")
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execute_process(COMMAND \${CMAKE_COMMAND} -E create_symlink
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\"${GHOSTTY_VT_SONAME}\"
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\"\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/${GHOSTTY_VT_LIBNAME}\")
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")
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endif()
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# Install static library
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install(FILES "${GHOSTTY_VT_STATIC_LIBRARY}" TYPE LIB)
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# Install headers
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install(DIRECTORY "${ZIG_OUT_DIR}/include/ghostty" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
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# --- CMake package config for find_package() ----------------------------------
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include(CMakePackageConfigHelpers)
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# Generate the config file
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configure_package_config_file(
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"${CMAKE_CURRENT_SOURCE_DIR}/dist/cmake/ghostty-vt-config.cmake.in"
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"${CMAKE_CURRENT_BINARY_DIR}/ghostty-vt-config.cmake"
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INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/ghostty-vt"
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)
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# Generate the version file
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write_basic_package_version_file(
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"${CMAKE_CURRENT_BINARY_DIR}/ghostty-vt-config-version.cmake"
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VERSION "${PROJECT_VERSION}"
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COMPATIBILITY SameMajorVersion
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)
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# Install the config files
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install(
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FILES
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"${CMAKE_CURRENT_BINARY_DIR}/ghostty-vt-config.cmake"
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"${CMAKE_CURRENT_BINARY_DIR}/ghostty-vt-config-version.cmake"
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DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/ghostty-vt"
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)
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