diff options
Diffstat (limited to 'm4/missing.m4')
| -rw-r--r-- | m4/missing.m4 | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/m4/missing.m4 b/m4/missing.m4 index 39178df2..868aa6b6 100644 --- a/m4/missing.m4 +++ b/m4/missing.m4 @@ -1,18 +1,30 @@ ## --------------------------------------------------------- ## ## Fake the existence of programs that GNU maintainers use. ## ## --------------------------------------------------------- ## -dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY) -dnl The program must properly implement --version. -AC_DEFUN(AM_MISSING_PROG, -[AC_MSG_CHECKING(for working $2) -# Run test in a subshell; some versions of sh will print an error if -# an executable is not found, even if stderr is redirected. -# Redirect stdin to placate older versions of autoconf. Sigh. -if ($2 --version) < /dev/null > /dev/null 2>&1; then - $1=$2 - AC_MSG_RESULT(found) + +# serial 2 + +# AM_MISSING_PROG(NAME, PROGRAM) +# ------------------------------ +AC_DEFUN([AM_MISSING_PROG], +[AC_REQUIRE([AM_MISSING_HAS_RUN]) +$1=${$1-"${am_missing_run}$2"} +AC_SUBST($1)]) + + +# AM_MISSING_HAS_RUN +# ------------------ +# Define MISSING if not defined so far and test if it supports --run. +# If it does, set am_missing_run to use it, otherwise, to nothing. +AC_DEFUN([AM_MISSING_HAS_RUN], +[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl +test x"${MISSING+set}" = xset || MISSING="\${SHELL} $am_aux_dir/missing" +# Use eval to expand $SHELL +if eval "$MISSING --run true"; then + am_missing_run="$MISSING --run " else - $1="$3/missing $2" - AC_MSG_RESULT(missing) + am_missing_run= + am_backtick='`' + AC_MSG_WARN([${am_backtick}missing' script is too old or missing]) fi -AC_SUBST($1)]) +]) |