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#!/bin/sh
#############################################################################
##
## This file is part of GAP, a system for computational discrete algebra.
##
## Copyright of GAP belongs to its developers, whose names are too numerous
## to list here. Please refer to the COPYRIGHT file for details.
##
## SPDX-License-Identifier: GPL-2.0-or-later
##
##
#W gac, the GAP compiler
##
## gac [-d] [-c|-C] [-o <output>] <input>...
##
## 'gac' compiles the input files. Input files must be GAP source code
## (suffix '.g' or '.gap'), C source code (suffix '.c'), or compiled code
## files (suffix '.o').
##
## If '-d' is given then the code is compiled for dynamic loading
##
## If neither '-c' nor '-C' is given, then 'gac' compiles the code completely,
## producing a new kernel for static compilation or a dynamically loadable '.so'
## file for dynamic compilation.
##
## If '-c' is given, then 'gac' only compiles the input files to
## '.o' object files, which must be further linked to make a static kernel or
## dynamically loadable module
##
## If '-C is given, then 'gac' only compiles the input files to C code, which
## will require compilation and linking to be usable.
##
## The option '-o <output>' tells 'gac' to name the output file <output>.
##
## The option '-save-temps' tells 'gac' to not delete any intermediate files
##
## The option '-p <option>' tells 'gac' to pass the option <option> to the
## C compiler.
##
## The option '-P <option>' tells 'gac' to pass the option <option> to the
## C linker.
##
## The option '-L <option>' tells 'gac' to pass the option <option>
## to the C linker when linking dynamic modules. Contrary to -P the
## option is appended at the end of the link command after the .o
## files to link.
##
## other options:
## -k|--gap-compiler
##
# read sysinfo.gap, which sets GAP_CFLAGS, GAP_CPPFLAGS, etc.
. "@SYSINFO_GAPROOT@/sysinfo.gap"
# Extract sysinfo settings...
gap_compiler="${GAP}"
c_compiler="${GAP_CC}"
cxx_compiler="${GAP_CXX}"
c_dyn_linker="${GAP_CC}"
c_addlibs=""
GAP_CFLAGS="${GAP_CFLAGS} ${GAC_CFLAGS}"
GAP_CXXFLAGS="${GAP_CXXFLAGS} ${GAC_CFLAGS}"
GAP_LDFLAGS="${GAP_LDFLAGS} ${GAC_LDFLAGS}"
# Using the stored C/C++ compilers from sysinfo.gap is sometimes
# undesirable. For example, if the compiler suite is upgraded or
# downgraded, the particular executable used to build GAP itself may
# no longer exist. The CC and CXX environment variables provide a
# somewhat standard way for the user to indicate which compilers he
# would like to use. So if those are set, we prefer them to the stored
# values. This allows people who know what they are doing to override
# the default behavior, while keeping the defaults safe for normal
# people.
if test -n "${CC}"; then
c_compiler="${CC}"
c_dyn_linker="${CC}"
fi
if test -n "${CXX}"; then
cxx_compiler="${CXX}"
fi
# is output going to a terminal?
if test -t 1 && command -v tput >/dev/null 2>&1 ; then
# does the terminal support color?
ncolors=$(tput colors)
if test -n "$ncolors" && test $ncolors -ge 8; then
bold="$(tput bold)"
underline="$(tput smul)"
standout="$(tput smso)"
normal="$(tput sgr0)"
black="$(tput setaf 0)"
red="$(tput setaf 1)"
green="$(tput setaf 2)"
yellow="$(tput setaf 3)"
blue="$(tput setaf 4)"
magenta="$(tput setaf 5)"
cyan="$(tput setaf 6)"
white="$(tput setaf 7)"
fi
fi
notice() {
printf "${green}%s${normal}\n" "$*"
}
warning() {
printf "${yellow}WARNING: %s${normal}\n" "$*"
}
error() {
printf "${red}ERROR: %s${normal}\n" "$*" 1>&2
exit 1
}
#############################################################################
##
#F echo_and_run
##
echo_and_run () {
cmd="$1" ; shift
echo "$cmd" "$@"
"$cmd" "$@"
}
#############################################################################
##
#F gap_compile <output> <input> <module-name> <identifier>
##
gap_compile () {
mkdir -p $(dirname $1)
echo_and_run ${gap_compiler} -C "$1" "$2" "$3" "$4"
}
#############################################################################
##
#F c_compile <output> <input>
##
c_compile () {
mkdir -p $(dirname $1)
echo_and_run ${c_compiler} ${GAP_CFLAGS} -o $1 ${GAP_CPPFLAGS} -c $2 || exit 1
}
#############################################################################
##
#F cxx_compile <output> <input>
##
cxx_compile () {
mkdir -p $(dirname $1)
echo_and_run ${cxx_compiler} ${GAP_CXXFLAGS} -o $1 ${GAP_CPPFLAGS} -c $2 || exit 1
}
#############################################################################
##
#F c_link_dyn <output> <input>
##
c_link_dyn () {
mkdir -p $(dirname $1)
echo_and_run ${c_dyn_linker} -o $1 $2 ${GAP_LDFLAGS} ${c_addlibs} || exit 1
}
#############################################################################
##
#F process_o_file <basename> <filename>
##
## Compile according to comp_mode and comp_howfar
##
process_o_file () {
name=$1
o_file=$2
# the GAP compiler replaces _ by __ in names, so adjust here, too
name="$(echo "$name" | sed 's/_/__/g')"
# just remember for the linking stage later
names="${names} ${name}"
objects="${objects} $o_file"
}
#############################################################################
##
#F process_c_file <basename> <filename>
##
## Compile according to comp_mode and comp_howfar
##
process_c_file () {
name=$1
c_file=$2
if [ $comp_howfar != "object" ]; then
o_file=${gactmp}/$$_${name}.o
temps_o="${temps_o} ${o_file}"
elif [ "X$output" != "X" ]; then
o_file=$output
else
o_file=${name}.o
fi
c_compile $o_file $c_file
if [ $comp_howfar = "link" ]; then
process_o_file $name $o_file
fi
}
#############################################################################
##
#F process_cxx_file <basename> <filename>
##
## Similar to process_c_file, just for C++ files.
##
process_cxx_file () {
name=$1
cxx_file=$2
if [ $comp_howfar != "object" ]; then
o_file=${gactmp}/$$_${name}.o
temps_o="${temps_o} ${o_file}"
elif [ "X$output" != "X" ]; then
o_file=$output
else
o_file=${name}.o
fi
cxx_compile $o_file $cxx_file
if [ $comp_howfar = "link" ]; then
process_o_file $name $o_file
fi
}
#############################################################################
##
#F process_gap_file <filename> <ext>
##
## Compile according to comp_mode and comp_howfar
##
process_gap_file () {
name=$(basename $1 $2)
if [ $comp_howfar != "c_code" ]; then
c_file=${gactmp}/$$_${name}.c
temps_c="${temps_c} $c_file"
elif [ "X$output" = "X" ]; then
c_file=${name}.c
else
c_file=$output
fi
gap_compile_in=$input
gap_compile_name=$input
if [ $comp_mode = "comp_static" ]; then
gap_compile_id=Init_${name}
else
gap_compile_id=Init_Dynamic
fi
gap_compile $c_file ${gap_compile_in} $gap_compile_id ${gap_compile_name}
if [ $comp_howfar != "c_code" ]; then
process_c_file $name $c_file
if [ "$savetemps" = "true" ]; then
notice "Leaving C file " $c_file
else
echo_and_run rm -f $c_file
fi
fi
}
#############################################################################
##
#F clean_up
##
clean_up () {
if [ "$savetemps" = "true" ]; then
notice "Leaving files on cleanup: " ${temps_c} ${temps_o}
else
echo_and_run rm -f ${temps_c} ${temps_o}
fi
}
trap "clean_up" 2 3
#############################################################################
##
## parse the arguments
##
if [ $# = 0 ]; then
error "usage: $0 [-d] [-c|-C] [-o <output>] <input>..."
fi
comp_mode="comp_static"
comp_howfar="link"
output=""
inputs=""
savetemps="false"
while [ $# -gt 0 ]; do
case $1 in
-c|--compile) comp_howfar="object";;
-d|--dynamic) comp_mode="comp_dyna";;
-C|--create-c) comp_howfar="c_code";;
-o|--output) shift; output="$1";;
-save-temps) savetemps="true";;
-k|--gap-compiler) shift; gap_compiler="$1";;
-p) shift;
GAP_CFLAGS="${GAP_CFLAGS} $1"
GAP_CXXFLAGS="${GAP_CXXFLAGS} $1"
;;
-P) shift; GAP_LDFLAGS="${GAP_LDFLAGS} $1";;
-L|--addlibs) shift; c_addlibs="${c_addlibs} $1";;
*.g|*.gap|*.gd|*.gi|*.c|*.cc|*.cpp|*.cxx|*.s|*.o|*.lo)
inputs="${inputs} $1";;
*) error "$0: cannot handle this argument '$1'";;
esac
shift
done
if [ "X${inputs}" = "X" ]; then
error "$0: no input files given"
fi
make_tmpdir () {
if command -v mktemp >/dev/null 2>&1 ; then
gactmp=$(mktemp -d -t "gacXXXXXXX")
else
basetmp=${TMPDIR:-/tmp}; #honor the TMPDIR environment variable.
gactmp="$basetmp/gac$$";
mkdir "$gactmp" || exit 1;
fi
}
#############################################################################
##
## main loop
##
#Make temporary directory
make_tmpdir;
# loop over the input files
for input in ${inputs}; do
case $input in
*.g) process_gap_file $input .g;;
*.gap) process_gap_file $input .gap;;
*.gd) process_gap_file $input .gd;;
*.gi) process_gap_file $input .gi;;
*.c) # compile '.c' source files
name=$(basename ${input} .c)
process_c_file $name $input;;
*.cc) # compile '.cc' source files (C++)
name=$(basename ${input} .cc)
process_cxx_file $name $input;;
*.cpp) # compile '.cpp' source files (also C++)
name=$(basename ${input} .cpp)
process_cxx_file $name $input;;
*.cxx) # compile '.cxx' source files (also C++)
name=$(basename ${input} .cxx)
process_cxx_file $name $input;;
*.s) # compile '.s' source files (assembler)
name=$(basename ${input} .s)
process_c_file $name $input;; # HACK: just use the C compiler
*.o) # add '.o' object files to the linker list
name=$(basename ${input} .o)
process_o_file $name $input;;
esac
done
# link phase
if [ $comp_howfar = "link" ]; then
if [ $comp_mode = "comp_static" ]; then
error "$0: static linking is not supported anymore, use -d / --dynamic"
fi
if [ "X${output}" = "X" ]; then output="${name}.so"; fi
c_link_dyn ${output} "${objects}"
if [ "$savetemps" = "true" ]; then
notice "Leaving object files " ${temps_o}
else
echo_and_run rm -f ${temps_o}
fi
fi
# Remove temporary directory.
if [ "$savetemps" = "false" ]; then
rm -rf "${gactmp}"
fi
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