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# gcc(1) completion -*- shell-script -*-
#
# The only unusual feature is that we don't parse "gcc --help -v" output
# directly, because that would include the options of all the other backend
# tools (linker, assembler, preprocessor, etc) without any indication that
# you cannot feed such options to the gcc driver directly. (For example, the
# linker takes a -z option, but you must type -Wl,-z for gcc.) Instead, we
# ask the driver ("g++") for the name of the compiler ("cc1"), and parse the
# --help output of the compiler.
_gcc()
{
local cur prev words cword
_init_completion || return
local cc backend
case $1 in
gcj)
backend=jc1
;;
gpc)
backend=gpc1
;;
*77)
backend=f771
;;
*95)
backend=f951
;;
*)
backend=cc1 # (near-)universal backend
;;
esac
if [[ "$cur" == -* ]]; then
cc=$($1 -print-prog-name=$backend 2>/dev/null)
[[ $cc ]] || return
# sink stderr:
# for C/C++/ObjectiveC it's useless
# for FORTRAN/Java it's an error
COMPREPLY=( $(compgen -W "$($cc --help 2>/dev/null | tr '\t' ' ' |\
command sed -e '/^ *-/!d' -e 's/ *-\([^][ <>]*\).*/-\1/')" \
-- "$cur") )
[[ $COMPREPLY == *= ]] && compopt -o nospace
else
_filedir
fi
} &&
complete -F _gcc gcc{,-5,-6,-7,-8} g++{,-5,-6,-7,-8} g77 g95 \
gccgo{,-5,-6,-7,-8} gcj gfortran{,-5,-6,-7,-8} gpc &&
{
cc --version 2>/dev/null | command grep -q GCC || \
[[ $(_realcommand cc) == *gcc* ]] && \
complete -F _gcc cc || complete -F _minimal cc
c++ --version 2>/dev/null | command grep -q GCC || \
[[ $(_realcommand c++) == *g++* ]] && \
complete -F _gcc c++ || complete -F _minimal c++
f77 --version 2>/dev/null | command grep -q GCC || \
[[ $(_realcommand f77) == *gfortran* ]] && \
complete -F _gcc f77 || complete -F _minimal f77
f95 --version 2>/dev/null | command grep -q GCC || \
[[ $(_realcommand f95) == *gfortran* ]] && \
complete -F _gcc f95 || complete -F _minimal f95
}
# ex: filetype=sh
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