Update of sr #110359 (project autoconf):
Status: None => Not Autoconf
Open/Closed: Open => Closed
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Follow-up Comment #1:
I cannot reproduce this problem using only code from autoconf proper, e.g.
AC_INIT([foo], [1])
AC_PROG_CXX
AC_OUTPUT
reliably selects the first g++ to be found in $PATH.
I *can* reproduce this problem with your configure script, but only if I
*don't* give a --with-tools or --with-toolbin option.
I believe the bug is in your NMS_TOOLS macro, specifically this bit
if test -d $tools/bin ; then
toolbin=$tools/bin
fi
If control reaches this point with $tools empty, which is what happens when
neither --with-tools or --with-toolbin is used, it will set $toolbin to "/bin"
on any system where /bin exists, and then that directory will be prepended to
$PATH.
I tried this rewrite of NMS_TOOLS and it works for me:
AC_DEFUN([NMS_TOOLS],
[AC_SUBST([tools], [])
AC_SUBST([toolbin], [])
AC_ARG_WITH([tools],
AS_HELP_STRING([--with-tools=DIR],[tool directory]),
[AS_CASE([$withval],
[yes], [AC_MSG_ERROR([--with-tools requires an argument])],
[no], [:],
[tools="${withval%/bin}"])])
AC_ARG_WITH([toolbin],
AS_HELP_STRING([--with-toolbin=DIR],[tool bin directory]),
[AS_CASE([$withval],
[yes], [AC_MSG_ERROR([--with-toolbin requires an argument])],
[no], [:],
[toolbin="${withval%/bin}/bin"])])
if test -n "$tools" && test -n "$toolbin"; then
AC_MSG_ERROR([--with-tools and --with-toolbin are mutually exclusive])
fi
if test -n "$tools"; then
toolbin="$tools/bin"
fi
if test -n "$toolbin"; then
if test -d "$toolbin"; then
PATH="$toolbin:$PATH"
tools="${toolbin%/bin}"
AC_MSG_NOTICE([Using tools in $tools])
else
AC_MSG_ERROR([tool location does not exist])
fi
fi])
I'm going to go ahead and close this bug report. Please feel free to reopen
if you can find a problem stemming from code in Autoconf itself.
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<https://savannah.gnu.org/support/?110359>
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