/usr/share/dune/cmake/modules/OverloadCompilerFlags.cmake is in libdune-common-dev 2.4.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 | # check whether the user wants to overload compile flags upon calling make
#
# Provides the following macros:
#
# initialize_compiler_script() : needs to be called before further flags are added to CMAKE_CXX_FLAGS
# finalize_compiler_script() : needs to be called at the end of the cmake macros, e.g. in finalize_dune_project
#
# By default this feature is disabled. Use -DALLOW_CXXFLAGS_OVERWRITE=ON to activate.
# Then the following is possible:
#
# make CXXFLAGS="your flags" GRIDTYPE="grid type"
#
# GRIDTYPE can be anything defined in config.h via the dune_define_gridtype macro from dune-grid.
# Furthermore any CPP variable of the form -DVAR=VALUE can be overloaded on the command line.
#
# Note: If you don't know what this is or what it's good for, don't use it.
#
option(ALLOW_CXXFLAGS_OVERWRITE OFF)
# check whether the user wants to append compile flags upon calling make
if(ALLOW_EXTRA_CXXFLAGS AND (${CMAKE_GENERATOR} MATCHES ".*Unix Makefiles.*"))
message("ALLOW_EXTRA_CXXFLAGS is deprecated, please use -DALLOW_CXXFLAGS_OVERWRITE=ON")
set(ALLOW_CXXFLAGS_OVERWRITE ON)
endif()
macro(find_extended_unix_commands)
include(FindUnixCommands)
find_program (GREP_PROGRAM grep)
if(NOT GREP_PROGRAM)
message( SEND_ERROR "grep not found, please disable ALLOW_CXXFLAGS_OVERWRITE")
endif()
find_program (SED_PROGRAM sed)
if(NOT SED_PROGRAM)
message( SEND_ERROR "sed not found, please disable ALLOW_CXXFLAGS_OVERWRITE")
endif()
find_program (CUT_PROGRAM cut)
if(NOT CUT_PROGRAM)
message( SEND_ERROR "cut not found, please disable ALLOW_CXXFLAGS_OVERWRITE")
endif()
find_program (ENV_PROGRAM env)
if(NOT ENV_PROGRAM)
message( SEND_ERROR "env not found, please disable ALLOW_CXXFLAGS_OVERWRITE")
endif()
find_program (ECHO_PROGRAM echo)
if(NOT ECHO_PROGRAM)
message( SEND_ERROR "echo not found, please disable ALLOW_CXXFLAGS_OVERWRITE")
endif()
find_program (CHMOD_PROGRAM chmod)
if(NOT CHMOD_PROGRAM)
message( SEND_ERROR "chmod not found, please disable ALLOW_CXXFLAGS_OVERWRITE")
endif()
mark_as_advanced(GREP_PROGRAM)
mark_as_advanced(SED_PROGRAM)
mark_as_advanced(CUT_PROGRAM)
mark_as_advanced(ENV_PROGRAM)
mark_as_advanced(ECHO_PROGRAM)
mark_as_advanced(CHMOD_PROGRAM)
endmacro(find_extended_unix_commands)
# init compiler script and store CXX flags
macro(initialize_compiler_script)
if(ALLOW_CXXFLAGS_OVERWRITE AND (${CMAKE_GENERATOR} MATCHES ".*Unix Makefiles.*"))
# check for unix commands necessary
find_extended_unix_commands()
# set CXXFLAGS as environment variable
set( DEFAULT_CXXFLAGS ${CMAKE_CXX_FLAGS})
set( CMAKE_CXX_FLAGS "" )
set( DEFAULT_CXX_COMPILER ${CMAKE_CXX_COMPILER} )
set( COMPILER_SCRIPT_FILE "#!${BASH}\nexec ${CMAKE_CXX_COMPILER} \"\$@\"")
file(WRITE ${CMAKE_BINARY_DIR}/compiler.sh "${COMPILER_SCRIPT_FILE}")
execute_process(COMMAND ${CHMOD_PROGRAM} 755 ${CMAKE_BINARY_DIR}/compiler.sh)
set(CMAKE_CXX_COMPILER ${CMAKE_BINARY_DIR}/compiler.sh)
endif()
endmacro()
# finalize compiler script and write it
macro(finalize_compiler_script)
if(ALLOW_CXXFLAGS_OVERWRITE AND (${CMAKE_GENERATOR} MATCHES ".*Unix Makefiles.*"))
set( COMPILER_SCRIPT_FILE "#!${BASH}\nSED=${SED_PROGRAM}\nGREP=${GREP_PROGRAM}")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\nCUT=${CUT_PROGRAM}\nENV=${ENV_PROGRAM}\nECHO=${ECHO_PROGRAM}")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\n# store flags\nFLAGS=\"\$@\"")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\nMAKE_EXECUTABLE_NEW=0\n")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\nif [ \"\$CXXFLAGS\" == \"\" ]; then\n # default CXX flags\n CXXFLAGS=\"${DEFAULT_CXXFLAGS}\"\nfi\n")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\nif [ \"\$EXTRA_CXXFLAGS\" != \"\" ]; then\n # extra CXX flags\n CXXFLAGS=\"$CXXFLAGS $EXTRA_CXXFLAGS\"\nfi\n")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\nGRIDS=\nCONFIG_H=${CMAKE_BINARY_DIR}/config.h")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\nif [ \"\$GRIDTYPE\" != \"\" ]; then")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\n GRIDS=`\$GREP \"defined USED_[A-Z_]*_GRIDTYPE\" \$CONFIG_H | \$SED 's/\\(.*defined USED\\_\\)\\(.*\\)\\(\\_GRIDTYPE*\\)/\\2/g'`\nfi\n")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\nOLDFLAGS=\$FLAGS\nFLAGS=")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\nfor FLAG in \$OLDFLAGS; do")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\n NEWFLAG=\$FLAG\n VARNAME=`\$ECHO \$FLAG | \$GREP \"\\-D\" | \$SED 's/-D//g'`")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\n for GRID in \$GRIDS; do\n if [ \"\$VARNAME\" == \"\$GRID\" ]; then\n NEWFLAG=\"-D\$GRIDTYPE\"\n break\n fi\n done")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\n VARNAME=`\$ECHO \$VARNAME | \$GREP \"=\" | \$CUT -d \"=\" -f 1`")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\n if [ \"\$VARNAME\" != \"\" ]; then\n VAR=`\$ENV | \$GREP \$VARNAME`\n if [ \"\$VAR\" != \"\" ]; then")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\n # add variable from environment to flags list\n NEWFLAG=\"-D\$VARNAME=\${!VARNAME}\"\n fi\n fi")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\n FLAGS=\"\$FLAGS \$NEWFLAG\"\ndone")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\n\$ECHO \"${DEFAULT_CXX_COMPILER} \$CXXFLAGS \$FLAGS\"")
set( COMPILER_SCRIPT_FILE "${COMPILER_SCRIPT_FILE}\nexec ${DEFAULT_CXX_COMPILER} \$CXXFLAGS \$FLAGS")
file(WRITE ${CMAKE_BINARY_DIR}/compiler.sh "${COMPILER_SCRIPT_FILE}")
endif()
endmacro()
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