109 lines
5.4 KiB
CMake
109 lines
5.4 KiB
CMake
# =============================================================================
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# FetchNinja.cmake
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#
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# Downloads, verifies, and extracts the pinned ninja (see NinjaPin.cmake for
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# the version/URL/hash) into TOOLCACHE_DIR. Run standalone, never included by
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# the normal CMake configure -- ninja is needed as the generator itself
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# (`cmake -G Ninja`), so it has to be resolved *before* configure runs, unlike
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# Doxygen (see FetchDoxygen.cmake), which is only needed for a downstream
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# custom target:
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#
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# cmake -P breeze/cmake/FetchNinja.cmake
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#
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# This is what breeze/scripts/setup.sh / setup.bat call, and also what breeze/scripts/
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# build.sh / build.bat call on demand if neither a pinned nor a system ninja
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# is found (see the comment there). Safe to re-run any time; a no-op if the
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# pinned version is already present.
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# =============================================================================
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# TOOLCACHE_DIR normally comes from project/Configuration.cmake, which isn't
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# loaded in this standalone script-mode invocation -- read it from there
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# directly (it holds settings only, so including it has no side
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# effects) rather than
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# hardcoding a second copy of its default. If you've overridden
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# TOOLCACHE_DIR via -DTOOLCACHE_DIR=... at configure time, pass the same
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# value here to match: cmake -DTOOLCACHE_DIR=... -P breeze/cmake/FetchNinja.cmake
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if(NOT DEFINED TOOLCACHE_DIR)
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get_filename_component(CMAKE_SOURCE_DIR "${CMAKE_CURRENT_LIST_DIR}/../.." ABSOLUTE)
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include("${CMAKE_SOURCE_DIR}/project/Configuration.cmake")
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endif()
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include("${CMAKE_CURRENT_LIST_DIR}/NinjaPin.cmake")
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if(NOT NINJA_PIN_PLATFORM_SUPPORTED)
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set(_pmn_ninja_platform_hint "")
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if(CMAKE_HOST_WIN32)
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set(_pmn_ninja_platform_hint
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" If this looks like an ordinary 64-bit machine, double-check this isn't "
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"a 32-bit cmake.exe running under WoW64 (installed under \"Program Files "
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"(x86)\" is a good sign it is) -- that's a common, easy way to end up here "
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"even on x64/ARM64 hardware; installing the 64-bit CMake from cmake.org "
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"fixes it.")
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endif()
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message(FATAL_ERROR "No pinned ninja ${NINJA_PINNED_VERSION} binary is configured for this host "
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"platform.${_pmn_ninja_platform_hint} Install ninja manually and make sure "
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"it's on PATH, or extend breeze/cmake/NinjaPin.cmake with a download URL + hash for "
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"this platform.")
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endif()
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if(EXISTS "${NINJA_PIN_EXECUTABLE}")
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message(STATUS "ninja ${NINJA_PINNED_VERSION} already present: ${NINJA_PIN_EXECUTABLE}")
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return()
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endif()
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message(STATUS "Downloading pinned ninja ${NINJA_PINNED_VERSION} (cached under ${TOOLCACHE_DIR})")
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set(_pmn_ninja_archive "${TOOLCACHE_DIR}/_ninja_download.archive")
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# No EXPECTED_HASH here on purpose -- see the identical comment in
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# FetchDoxygen.cmake: file(DOWNLOAD ... EXPECTED_HASH ...) raises a hard,
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# unrecoverable CMake Error on ANY failure, including plain network
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# failures. Downloading first and verifying the hash ourselves afterward
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# lets a network failure and a genuine integrity failure be told apart and
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# handled differently (see below).
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file(DOWNLOAD "${NINJA_PIN_URL}" "${_pmn_ninja_archive}"
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STATUS _pmn_ninja_dl_status
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SHOW_PROGRESS
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)
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list(GET _pmn_ninja_dl_status 0 _pmn_ninja_dl_code)
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if(NOT _pmn_ninja_dl_code EQUAL 0)
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list(GET _pmn_ninja_dl_status 1 _pmn_ninja_dl_msg)
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file(REMOVE "${_pmn_ninja_archive}")
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message(FATAL_ERROR "Failed to download pinned ninja ${NINJA_PINNED_VERSION}: ${_pmn_ninja_dl_msg}. "
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"Check your network connection and try again, or install ninja yourself and "
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"make sure it's on PATH -- breeze/scripts/build.sh / build.bat will use a system ninja "
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"if no pinned one is found.")
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endif()
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# Verify integrity, deliberately as a hard failure -- see the identical
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# comment in FetchDoxygen.cmake: a mismatch here means corruption/tampering
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# in transit, or a stale pinned hash after bumping NINJA_PINNED_VERSION in
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# NinjaPin.cmake without updating the matching hash there.
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file(SHA256 "${_pmn_ninja_archive}" _pmn_ninja_actual_hash)
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string(TOLOWER "${_pmn_ninja_actual_hash}" _pmn_ninja_actual_hash)
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string(TOLOWER "${NINJA_PIN_HASH}" _pmn_ninja_expected_hash_lc)
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if(NOT _pmn_ninja_actual_hash STREQUAL _pmn_ninja_expected_hash_lc)
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file(REMOVE "${_pmn_ninja_archive}")
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message(FATAL_ERROR "Pinned ninja ${NINJA_PINNED_VERSION} download hash mismatch -- "
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"expected ${_pmn_ninja_expected_hash_lc}, got ${_pmn_ninja_actual_hash}. "
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"This usually means NINJA_PINNED_VERSION was bumped in breeze/cmake/NinjaPin.cmake "
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"without updating the matching hash there, or the download was corrupted or "
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"tampered with in transit.")
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endif()
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file(ARCHIVE_EXTRACT INPUT "${_pmn_ninja_archive}" DESTINATION "${NINJA_PIN_ROOT}")
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file(REMOVE "${_pmn_ninja_archive}")
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if(NOT CMAKE_HOST_WIN32)
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file(CHMOD "${NINJA_PIN_EXECUTABLE}" PERMISSIONS
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OWNER_READ OWNER_WRITE OWNER_EXECUTE
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GROUP_READ GROUP_EXECUTE
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WORLD_READ WORLD_EXECUTE)
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endif()
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if(EXISTS "${NINJA_PIN_EXECUTABLE}")
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message(STATUS "ninja ${NINJA_PINNED_VERSION} ready: ${NINJA_PIN_EXECUTABLE}")
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else()
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message(FATAL_ERROR "Download/extract completed but the expected executable is missing: "
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"${NINJA_PIN_EXECUTABLE}")
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endif()
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