9ed415ad43
Without this, Ninja requires a two-step process because it doesn't know what generates version.h it sees from its depfile support and when it changes in one run, it has already pruned the dependent nodes from its internal graph and requires a second run to catch it.
34 lines
1.3 KiB
CMake
34 lines
1.3 KiB
CMake
function (write_static_version_header hash)
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set(VERSIONTAG "${hash}")
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configure_file("src/version.h.in" "version/version.h")
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add_custom_target(version ALL)
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endfunction ()
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file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/version")
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find_package(Git QUIET)
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if ("$Format:$" STREQUAL "")
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# We're in a tarball; use hard-coded variables.
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write_static_version_header("release")
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elseif (GIT_FOUND OR Git_FOUND)
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message(STATUS "Found Git: ${GIT_EXECUTABLE}")
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set(extra_output)
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if (CMAKE_GENERATOR MATCHES "Ninja")
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# Ninja will not rerun the command every time if the file doesn't change,
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# so inject this bogus output so that it always runs.
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set(extra_output "${CMAKE_SOURCE_DIR}/.force-git-version-check")
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endif ()
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add_custom_command(
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OUTPUT "${CMAKE_BINARY_DIR}/version/version.h"
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${extra_output}
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COMMAND "${CMAKE_COMMAND}"
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"-D" "GIT=${GIT_EXECUTABLE}"
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"-D" "TO=${CMAKE_BINARY_DIR}/version/version.h"
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"-P" "src/version.cmake"
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WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}")
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add_custom_target(version ALL
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DEPENDS "${CMAKE_BINARY_DIR}/version/version.h")
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else()
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message(STATUS "WARNING: Git was not found!")
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write_static_version_header("unknown")
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endif ()
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