99 lines
3.6 KiB
CMake
99 lines
3.6 KiB
CMake
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# gensrc.cmake.in
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# Generate source files with awk, based upon the automake logic.
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# Copyright (C) 2016 Glenn Randers-Pehrson
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# Written by Roger Leigh, 2016
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# This code is released under the libpng license.
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# For conditions of distribution and use, see the disclaimer
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# and license in png.h
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# Variables substituted from CMakeLists.txt
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set(SRCDIR "@CMAKE_CURRENT_SOURCE_DIR@")
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set(BINDIR "@CMAKE_CURRENT_BINARY_DIR@")
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set(AWK "@AWK@")
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set(DFA_XTRA "@DFA_XTRA@")
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set(PNG_PREFIX "@PNG_PREFIX@")
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set(PNGLIB_VERSION "@PNGLIB_VERSION@")
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if("${OUTPUT}" STREQUAL "scripts/pnglibconf.c")
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# Generate scripts/pnglibconf.c
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file(REMOVE "${BINDIR}/pnglibconf.tf6" "${BINDIR}/pnglibconf.tf7")
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execute_process(COMMAND "${CMAKE_COMMAND}" -E echo "com ${PNGLIB_VERSION} STANDARD API DEFINITION"
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COMMAND "${AWK}" -f "${SRCDIR}/scripts/options.awk"
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"out=pnglibconf.tf6" "logunsupported=1" "version=search"
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"${SRCDIR}/pngconf.h" "-"
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"${SRCDIR}/scripts/pnglibconf.dfa"
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WORKING_DIRECTORY "${BINDIR}"
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RESULT_VARIABLE AWK_FAIL)
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if(AWK_FAIL)
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message(FATAL_ERROR "Failed to generate pnglibconf.tf6")
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endif()
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execute_process(COMMAND "${AWK}" -f "${SRCDIR}/scripts/options.awk"
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"out=pnglibconf.tf7" "pnglibconf.tf6"
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WORKING_DIRECTORY "${BINDIR}"
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RESULT_VARIABLE AWK_FAIL)
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if(AWK_FAIL)
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message(FATAL_ERROR "Failed to generate pnglibconf.tf7")
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endif()
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file(REMOVE "pnglibconf.tf6")
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file(MAKE_DIRECTORY "${BINDIR}/scripts")
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file(RENAME "pnglibconf.tf7" "${BINDIR}/scripts/pnglibconf.c")
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elseif ("${OUTPUT}" STREQUAL "pnglibconf.c")
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# Generate pnglibconf.c
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file(REMOVE "${BINDIR}/pnglibconf.tf4" "${BINDIR}/pnglibconf.tf5")
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execute_process(COMMAND "${AWK}" -f "${SRCDIR}/scripts/options.awk"
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out=pnglibconf.tf4 version=search
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${SRCDIR}/pngconf.h ${SRCDIR}/scripts/pnglibconf.dfa
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${SRCDIR}/pngusr.dfa ${DFA_XTRA}
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WORKING_DIRECTORY "${BINDIR}"
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RESULT_VARIABLE AWK_FAIL)
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if(AWK_FAIL)
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message(FATAL_ERROR "Failed to generate pnglibconf.tf4")
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endif()
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execute_process(COMMAND "${AWK}" -f "${SRCDIR}/scripts/options.awk"
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out=pnglibconf.tf5 pnglibconf.tf4
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WORKING_DIRECTORY "${BINDIR}"
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RESULT_VARIABLE AWK_FAIL)
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if(AWK_FAIL)
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message(FATAL_ERROR "Failed to generate pnglibconf.tf5")
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endif()
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file(REMOVE "pnglibconf.tf4")
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file(MAKE_DIRECTORY "${BINDIR}/scripts")
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file(RENAME "pnglibconf.tf5" "${BINDIR}/pnglibconf.c")
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elseif ("${OUTPUT}" STREQUAL "pnglibconf.h")
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# Generate pnglibconf.h
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file(REMOVE "${BINDIR}/${OUTPUT}")
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execute_process(COMMAND "${CMAKE_COMMAND}" -E copy "${BINDIR}/pnglibconf.out"
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"${BINDIR}/${OUTPUT}"
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RESULT_VARIABLE COPY_FAIL)
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if(COPY_FAIL)
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message(FATAL_ERROR "Failed to create pnglibconf.h")
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endif()
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elseif("${OUTPUT}" STREQUAL "scripts/pnglibconf.h.prebuilt")
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# Generate scripts/pnglibconf.h.prebuilt (fails build)
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message(STATUS "Attempting to build scripts/pnglibconf.h.prebuilt")
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message(STATUS "This is a machine generated file, but if you want to make")
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message(STATUS "a new one simply build the 'genfiles' target, and copy")
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message(STATUS "scripts/pnglibconf.out to scripts/pnglibconf.h.prebuilt")
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message(STATUS "AND set PNG_ZLIB_VERNUM to 0 (you MUST do this)")
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message(FATAL_ERROR "Stopping build")
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else()
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message(FATAL_ERROR "Unsupported output: ${OUTPUT}")
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endif()
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