mirror of
https://github.com/OPM/opm-simulators.git
synced 2025-02-04 00:00:28 -06:00
fd781af125
v2: incorporate Roland's nitpicks (I hope)
v3: It was decided that it's better to change the default behavior
v4: make sure the CMake syntax is correct even if the value of the
variable contains spaces (if it contains double quotes it's a
different matter, but that's pretty much a corner case, IMHO)
v5: properly escape backslash and double quote characters in the cmake
syntax
112 lines
4.3 KiB
CMake
112 lines
4.3 KiB
CMake
# - Create config.h based on a list of variables
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#
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# Synopsis:
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# configure_vars (FILE syntax filename verb varlist)
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# where
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# syntax CXX or CMAKE, depending on target
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# filename Full path (including name) of config.h
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# verb WRITE or APPEND if truncating or not
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# varlist List of variable names that has been defined
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#
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# In addition, this function will define HAVE_CONFIG_H for the
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# following compilations, (only) if the filename is "config.h".
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#
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# Example:
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# list (APPEND FOO_CONFIG_VARS
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# "/* bar library */"
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# "HAVE_BAR"
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# "HAVE_BAR_VERSION_2"
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# )
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# configure_vars (
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# FILE CXX ${PROJECT_BINARY_DIR}/config.h
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# WRITE ${FOO_CONFIG_VARS}
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# )
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# Copyright (C) 2012 Uni Research AS
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# This file is licensed under the GNU General Public License v3.0
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function (configure_vars obj syntax filename verb)
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# this is just to make the syntax look like the build-in commands
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if (NOT ("${obj}" STREQUAL "FILE" AND
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(("${verb}" STREQUAL "WRITE") OR ("${verb}" STREQUAL "APPEND"))))
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message (FATAL_ERROR "Syntax error in argument list")
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endif (NOT ("${obj}" STREQUAL "FILE" AND
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(("${verb}" STREQUAL "WRITE") OR ("${verb}" STREQUAL "APPEND"))))
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if (NOT (("${syntax}" STREQUAL "CXX") OR ("${syntax}" STREQUAL "CMAKE")))
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message (FATAL_ERROR "Invalid target syntax \"${syntax}\"")
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endif (NOT (("${syntax}" STREQUAL "CXX") OR ("${syntax}" STREQUAL "CMAKE")))
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# truncate the file if the verb was "WRITE"
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if (verb STREQUAL "WRITE")
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file (WRITE "${filename}" "")
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endif (verb STREQUAL "WRITE")
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# whenever we use this, we also signal to the header files that we
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# have "config.h". add this before any other files (known till now)
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# to avoid confusion from other configuration files.
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get_filename_component (_config_path "${filename}" PATH)
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get_filename_component (_config_file "${filename}" NAME)
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if ("${_config_file}" MATCHES "config\\.h(\\..+)?")
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add_definitions (-DHAVE_CONFIG_H=1)
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include_directories (BEFORE "${_config_path}")
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endif ("${_config_file}" MATCHES "config\\.h(\\..+)?")
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# only write the current value of each variable once
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set (_args ${ARGN})
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if (_args)
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list (REMOVE_DUPLICATES _args)
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endif (_args)
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# process each variable
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set (_prev_verbatim TRUE)
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foreach (_var IN LISTS _args)
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# massage the name to remove source code formatting
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string (REGEX REPLACE "^[\\n\\t\\ ]+" "" _var "${_var}")
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string (REGEX REPLACE "[\\n\\t\\ ]+$" "" _var "${_var}")
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# if the name of a variable has the syntax of a comments, write it
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# verbatim to the file; this can be used to create headings
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if ("${_var}" MATCHES "^/[/*]")
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if (NOT _prev_verbatim)
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file (APPEND "${filename}" "\n")
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endif (NOT _prev_verbatim)
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file (APPEND "${filename}" "${_var}\n")
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set (_prev_verbatim TRUE)
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else ("${_var}" MATCHES "^/[/*]")
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# write a CMake statements that warns if the value has changed
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if ("${syntax}" STREQUAL "CMAKE")
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set (_db "\${") # to avoid parsing problems
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file (APPEND "${filename}" "if (DEFINED ${_var} AND NOT \"${_db}${_var}}\" STREQUAL \"${${_var}}\")\n")
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file (APPEND "${filename}" "\tmessage (WARNING \"Incompatible value \\\"${_db}${_var}}\\\" of variable \\\"${_var}\\\"\")\n")
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file (APPEND "${filename}" "endif ()\n")
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endif ()
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# check for empty variable; variables that are explicitly set to false
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# is not included in this clause
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if ((NOT DEFINED ${_var}) OR ("${${_var}}" STREQUAL ""))
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if ("${syntax}" STREQUAL "CMAKE")
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file (APPEND "${filename}" "set (${_var})\n")
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else ("${syntax}" STREQUAL "CMAKE")
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file (APPEND "${filename}" "/* #undef ${_var} */\n")
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endif ("${syntax}" STREQUAL "CMAKE")
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else ((NOT DEFINED ${_var}) OR ("${${_var}}" STREQUAL ""))
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# write to file using the correct syntax
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if ("${syntax}" STREQUAL "CMAKE")
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# escape backslash and double quote characters
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string (REPLACE "\\" "\\\\" _quoted "${${_var}}")
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string (REPLACE "\"" "\\\"" _quoted "${_quoted}")
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file (APPEND "${filename}" "set (${_var} \"${_quoted}\")\n")
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else ("${syntax}" STREQUAL "CMAKE")
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file (APPEND "${filename}" "#define ${_var} ${${_var}}\n")
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endif ("${syntax}" STREQUAL "CMAKE")
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endif ((NOT DEFINED ${_var}) OR ("${${_var}}" STREQUAL ""))
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set (_prev_verbatim FALSE)
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endif ("${_var}" MATCHES "^/[/*]")
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endforeach(_var)
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endfunction (configure_vars obj syntax filename verb)
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