9cd4a79b87
newer versions of cmake (mine is 3.2.2) complain about policy CMP00054: ``` CMake Warning (dev) at /home/and/src/opm-common/cmake/Modules/ConfigVars.cmake:30 (if): Policy CMP0054 is not set: Only interpret if() arguments as variables or keywords when unquoted. Run "cmake --help-policy CMP0054" for policy details. Use the cmake_policy command to set the policy and suppress this warning. Quoted variables like "FILE" will no longer be dereferenced when the policy is set to NEW. Since the policy is not set the OLD behavior will be used. Call Stack (most recent call first): /home/and/src/opm-common/cmake/Modules/OpmLibMain.cmake:173 (configure_vars) CMakeLists.txt:109 (include) This warning is for project developers. Use -Wno-dev to suppress it. ``` since I'm pretty sure that the old behaviour was not intended here, fix this for older versions of cmake as well (by adding a prefix so that CMake does not interpret "FILE" as a variable.)
111 lines
4.2 KiB
CMake
111 lines
4.2 KiB
CMake
# - Create config.h based on a list of variables
|
|
#
|
|
# Synopsis:
|
|
# configure_vars (FILE syntax filename verb varlist)
|
|
# where
|
|
# syntax CXX or CMAKE, depending on target
|
|
# filename Full path (including name) of config.h
|
|
# verb WRITE or APPEND if truncating or not
|
|
# varlist List of variable names that has been defined
|
|
#
|
|
# In addition, this function will define HAVE_CONFIG_H for the
|
|
# following compilations, (only) if the filename is "config.h".
|
|
#
|
|
# Example:
|
|
# list (APPEND FOO_CONFIG_VARS
|
|
# "/* bar library */"
|
|
# "HAVE_BAR"
|
|
# "HAVE_BAR_VERSION_2"
|
|
# )
|
|
# configure_vars (
|
|
# FILE CXX ${PROJECT_BINARY_DIR}/config.h
|
|
# WRITE ${FOO_CONFIG_VARS}
|
|
# )
|
|
|
|
# Copyright (C) 2012 Uni Research AS
|
|
# This file is licensed under the GNU General Public License v3.0
|
|
|
|
function (configure_vars obj syntax filename verb)
|
|
# this is just to make the syntax look like the build-in commands
|
|
if (NOT ("X Y Z ${obj}" STREQUAL "X Y Z FILE" AND
|
|
(("${verb}" STREQUAL "WRITE") OR ("${verb}" STREQUAL "APPEND"))))
|
|
message (FATAL_ERROR "Syntax error in argument list")
|
|
endif ()
|
|
if (NOT (("${syntax}" STREQUAL "CXX") OR ("${syntax}" STREQUAL "CMAKE")))
|
|
message (FATAL_ERROR "Invalid target syntax \"${syntax}\"")
|
|
endif (NOT (("${syntax}" STREQUAL "CXX") OR ("${syntax}" STREQUAL "CMAKE")))
|
|
|
|
# truncate the file if the verb was "WRITE"
|
|
if (verb STREQUAL "WRITE")
|
|
file (WRITE "${filename}" "")
|
|
endif (verb STREQUAL "WRITE")
|
|
|
|
# whenever we use this, we also signal to the header files that we
|
|
# have "config.h". add this before any other files (known till now)
|
|
# to avoid confusion from other configuration files.
|
|
get_filename_component (_config_path "${filename}" PATH)
|
|
get_filename_component (_config_file "${filename}" NAME)
|
|
if ("${_config_file}" MATCHES "config\\.h(\\..+)?")
|
|
add_definitions (-DHAVE_CONFIG_H=1)
|
|
include_directories (BEFORE "${_config_path}")
|
|
endif ("${_config_file}" MATCHES "config\\.h(\\..+)?")
|
|
|
|
# only write the current value of each variable once
|
|
set (_args ${ARGN})
|
|
if (_args)
|
|
list (REMOVE_DUPLICATES _args)
|
|
endif (_args)
|
|
|
|
# process each variable
|
|
set (_prev_verbatim TRUE)
|
|
foreach (_var IN LISTS _args)
|
|
|
|
# massage the name to remove source code formatting
|
|
string (REGEX REPLACE "^[\\n\\t\\ ]+" "" _var "${_var}")
|
|
string (REGEX REPLACE "[\\n\\t\\ ]+$" "" _var "${_var}")
|
|
|
|
# if the name of a variable has the syntax of a comments, write it
|
|
# verbatim to the file; this can be used to create headings
|
|
if ("X Y Z ${_var}" MATCHES "^X Y Z /[/*]")
|
|
if (NOT _prev_verbatim)
|
|
file (APPEND "${filename}" "\n")
|
|
endif (NOT _prev_verbatim)
|
|
file (APPEND "${filename}" "${_var}\n")
|
|
set (_prev_verbatim TRUE)
|
|
|
|
else ()
|
|
|
|
# write a CMake statements that warns if the value has changed
|
|
if ("${syntax}" STREQUAL "CMAKE")
|
|
set (_db "\${") # to avoid parsing problems
|
|
file (APPEND "${filename}" "if (DEFINED ${_var} AND NOT \"${_db}${_var}}\" STREQUAL \"${${_var}}\")\n")
|
|
file (APPEND "${filename}" "\tmessage (WARNING \"Incompatible value \\\"${_db}${_var}}\\\" of variable \\\"${_var}\\\"\")\n")
|
|
file (APPEND "${filename}" "endif ()\n")
|
|
endif ()
|
|
|
|
# check for empty variable; variables that are explicitly set to false
|
|
# is not included in this clause
|
|
if ((NOT DEFINED ${_var}) OR ("${${_var}}" STREQUAL ""))
|
|
if ("${syntax}" STREQUAL "CMAKE")
|
|
file (APPEND "${filename}" "set (${_var})\n")
|
|
else ("${syntax}" STREQUAL "CMAKE")
|
|
file (APPEND "${filename}" "/* #undef ${_var} */\n")
|
|
endif ("${syntax}" STREQUAL "CMAKE")
|
|
else ((NOT DEFINED ${_var}) OR ("${${_var}}" STREQUAL ""))
|
|
# write to file using the correct syntax
|
|
if ("${syntax}" STREQUAL "CMAKE")
|
|
# escape backslash and double quote characters
|
|
string (REPLACE "\\" "\\\\" _quoted "${${_var}}")
|
|
string (REPLACE "\"" "\\\"" _quoted "${_quoted}")
|
|
|
|
file (APPEND "${filename}" "set (${_var} \"${_quoted}\")\n")
|
|
else ("${syntax}" STREQUAL "CMAKE")
|
|
file (APPEND "${filename}" "#define ${_var} ${${_var}}\n")
|
|
endif ("${syntax}" STREQUAL "CMAKE")
|
|
|
|
endif ((NOT DEFINED ${_var}) OR ("${${_var}}" STREQUAL ""))
|
|
set (_prev_verbatim FALSE)
|
|
endif ()
|
|
endforeach(_var)
|
|
endfunction (configure_vars obj syntax filename verb)
|