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AC_PATH_PROG ignores the variable
From: |
Stepan Kasal |
Subject: |
AC_PATH_PROG ignores the variable |
Date: |
Fri, 5 Nov 2004 14:03:07 +0100 |
User-agent: |
Mutt/1.4.1i |
Hello,
I think I have found a bug in AC_PATH_PROG. If the variable is set but
doesn't look like full path, AC_PATH_PROG ignores it.
The manual says:
- Macro: AC_PATH_PROG (VARIABLE, PROG-TO-CHECK-FOR,
[VALUE-IF-NOT-FOUND], [PATH])
Like `AC_CHECK_PROG', but set VARIABLE to the entire path of
PROG-TO-CHECK-FOR if found.
But if I set eg. PYTHON=python2.1 (not the last version) then
AC_CHECK_PROG(PYTHON, python, ...)
respects it, while
AC_PATH_PROG(PYTHON, python, ...)
ignores it and proceeds as if the variable were empty and finds "python"
instead of "python2.1".
I think that AC_PATH_PROG should con tain something like the following:
AC_CACHE_VAL([ac_cv_path_$1],
[case $$1 in
[[\\/]]* | ?:[[\\/]]*)
ac_cv_path_$1="$$1";; # Let the user override the test with a path.
?*) ac_word="$$1";;
esac
_AS_PATH_WALK([$4],
[for ac_exec_ext in '' $ac_executable_extensions; do
if AS_EXECUTABLE_P(["$as_dir/$ac_word$ac_exec_ext"]); then
ac_cv_path_$1="$as_dir/$ac_word$ac_exec_ext"
echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext"
>&AS_MESSAGE_LOG_FD
break 2
fi
done])
if test -z "$ac_cv_path_$1" && test "x$$1" != x; then
AC_MSG_ERROR("Cannot find $$1 required by \$$1")
fi
dnl If no 3rd arg is given, leave the cache variable unset,
dnl so AC_PATH_PROGS will keep looking.
m4_ifvaln([$3],
[ test -z "$ac_cv_path_$1" && ac_cv_path_$1="$3"])])
What do you think?
Stepan
- AC_PATH_PROG ignores the variable,
Stepan Kasal <=
- Re: AC_PATH_PROG ignores the variable, Ralf Corsepius, 2004/11/05
- Re: AC_PATH_PROG ignores the variable, Alexandre Duret-Lutz, 2004/11/06
- Re: AC_PATH_PROG ignores the variable, Stepan Kasal, 2004/11/07
- Re: AC_PATH_PROG ignores the variable, Paul Eggert, 2004/11/09
- Re: AC_PATH_PROG ignores the variable, Alexandre Duret-Lutz, 2004/11/10
- Re: AC_PATH_PROG ignores the variable, Stepan Kasal, 2004/11/10
- Re: AC_PATH_PROG ignores the variable, Alexandre Duret-Lutz, 2004/11/10
- Re: AC_PATH_PROG ignores the variable, Stepan Kasal, 2004/11/10