1 files changed, 59 insertions, 0 deletions
diff --git a/completions/gcc b/completions/gcc
new file mode 100644
index 00000000..d78e3e24
--- /dev/null
+++ b/completions/gcc
@@ -0,0 +1,59 @@
+# gcc(1) completion
+#
+# 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.
+
+have gcc &&
+_gcc()
+{
+    local cur cc backend
+
+    COMPREPLY=()
+    _get_comp_words_by_ref cur
+
+    _expand || return 0
+
+    case $1 in
+        gcj)
+            backend=jc1
+            ;;
+        gpc)
+            backend=gpc1
+            ;;
+        *77)
+            backend=f771
+            ;;
+        *)
+            backend=cc1 # (near-)universal backend
+            ;;
+    esac
+
+    if [[ "$cur" == -* ]]; then
+        cc=$( $1 -print-prog-name=$backend )
+        # 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' ' ' | \
+           sed -e '/^  *-/!d' -e 's/ *-\([^ ]*\).*/-\1/' | \
+           sort -u )" -- "$cur" ) )
+    else
+        _filedir
+    fi
+} &&
+complete -F _gcc gcc g++ c++ g77 gcj gpc
+[ $USERLAND = GNU -o $UNAME = Cygwin ] && \
+[ -n "${have:-}" ] && complete -F _gcc cc
+
+# Local variables:
+# mode: shell-script
+# sh-basic-offset: 4
+# sh-indent-comment: t
+# indent-tabs-mode: nil
+# End:
+# ex: ts=4 sw=4 et filetype=sh