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Cache coerced C files, simplify build logic
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| # Utility for validating and -- if needed -- cloning a git submodule | ||
| # This project depends on "CheckCommand", which is part of the LMMS project. | ||
| # | ||
| # Looks for a relative file inside source directory of current target | ||
| # - Attempts to clone with git if it's missing | ||
| # - Throws FATAL_ERROR by default unless OPTIONAL is specified | ||
| # - If submodule "foo" is located inside "src/3rdparty/foo", the RELATIVE_FILE | ||
| # should be foo/file.c, resolving to src/3rdparty/foo/foo/bar.c | ||
| # | ||
| # Usage: | ||
| # CHECK_SUBMODULE(foo/bar.c) | ||
| # CHECK_SUBMODULE(foo/bar.c OPTIONAL) | ||
| # | ||
| # Copyright (c) 2017, Tres Finocchiaro, <tres.finocchiaro@gmail.com> | ||
| # | ||
| # Redistribution and use is allowed according to the terms of the BSD license. | ||
| # For details see the accompanying COPYING-CMAKE-SCRIPTS file. | ||
| INCLUDE(CheckCommand) | ||
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| MACRO(CHECK_SUBMODULE) | ||
| SET(ARG_LIST "${ARGN}") | ||
| LIST(LENGTH ARG_LIST ARG_LEN) | ||
| IF (ARG_LEN EQUAL 1) | ||
| LIST(GET ARG_LIST 0 RELATIVE_FILE) | ||
| ELSEIF(ARG_LEN EQUAL 2) | ||
| LIST(GET ARG_LIST 0 RELATIVE_FILE) | ||
| LIST(GET ARG_LIST 1 OPTIONAL) | ||
| ELSE() | ||
| MESSAGE(FATAL_ERROR "CHECK_SUBMODULE takes (1) or (2) arguments but (${ARG_LEN}) were provided") | ||
| ENDIF() | ||
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||
| # Guess submodule name from the path prefix | ||
| STRING(REPLACE "/" ";" PARTS ${RELATIVE_FILE}) | ||
| LIST(GET PARTS 0 SUBMODULE_NAME) | ||
| SET(ABSOLUTE_FILE "${CMAKE_CURRENT_SOURCE_DIR}/${RELATIVE_FILE}") | ||
| SET(SUBMODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/${SUBMODULE_NAME}") | ||
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||
| # Attempt to do lazy clone | ||
| IF(NOT EXISTS "${ABSOLUTE_FILE}") | ||
| MESSAGE("-- Submodule '${SUBMODULE_NAME}' missing") | ||
| MESSAGE("-- Cloning '${SUBMODULE_NAME}' using git") | ||
| CHECK_COMMAND(git) | ||
| EXECUTE_PROCESS( | ||
| COMMAND git submodule update --init --recursive | ||
| WORKING_DIRECTORY "${SUBMODULE_PATH}" | ||
| ERROR_VARIABLE GIT_STDERR | ||
| ) | ||
| IF(NOT GIT_STDERR EQUAL "") | ||
| MESSAGE("${GIT_STDERR}") | ||
| ENDIF() | ||
| ENDIF() | ||
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||
| IF(EXISTS "${ABSOLUTE_FILE}") | ||
| MESSAGE("-- Found submodule '${SUBMODULE_NAME}': ${CMAKE_CURRENT_SOURCE_DIR}/${SUBMODULE_NAME}") | ||
| ELSE() | ||
| # Handle optional/warning mode | ||
| IF(OPTIONAL STREQUAL "OPTIONAL") | ||
| SET(MESSAGE_STATUS WARNING) | ||
| ELSE() | ||
| SET(MESSAGE_STATUS FATAL_ERROR) | ||
| ENDIF() | ||
| MESSAGE(${MESSAGE_STATUS} "Submodule '${SUBMODULE_NAME}' missing or incomplete (${RELATIVE_FILE} file not found)\n" | ||
| "Did you forget to specify '--recurse' when it was cloned?\n\n") | ||
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| ENDIF() | ||
| ENDMACRO() |
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