Mail Archives: cygwin/2005/01/24/03:35:41
Hi,
On Sun, Jan 23, 2005 at 08:15:32PM -0500, Karl Berry wrote:
> Regarding texi2dvi and cygwin, please see if the new version (below) works.
> for dir in $PATH; do
> # use test -x rather than test -f for DJGPP, where test -x checks
> # for .exe. But test -x will also return true for directories, so
> # explicitly ignore those.
> if test -x "$dir/$1" && test ! -d "$dir/$1"; then
I see two problems:
1) on a unix-style platforms, if /tmp/etex is a special file (eg. a named pipe)
and if /tmp is in PATH, the code will think this is a binary.
As you don't remember the path, this problem would only hit if a named pipe
existed, while the binary did not. Unlikely.
2) On cygwin, if both $dir/tex.exe exists and a directory $dir/tex/ exist,
this function misses the existence of tex.exe.
I'm afraid the later can actually happen; so the proposed code would cause
problems on Cygwin.
I see two possible ways of solution:
Fix the problem exactly as reported:
the configure script tests for the problem:
AC_SUBST(TESTF, "test -f")
testfile=conf$$.exe
touch $testfile
if test -x $testfile; then
test -f $testfile || TESTF=:
fi
rm -f $testfile
and use
for dir in $PATH; do
if test -x "$dir/$1" && @TESTF@ "$dir/$1"; then
or
testf="@TESTF@"
...
for dir in $PATH; do
if test -x "$dir/$1" && $testf "$dir/$1"; then
in texi2dvi.in .
Another way to fix the problem is to adopt the solution used by autoconf:
make sure that the variable $ac_executable_extensions, which is set in
config.site on some platforms, gets substituted:
AC_SUBST(ac_executable_extensions)
and put the following to texi2dvi.in:
for dir in $PATH; do
for exec_ext in '' @ac_executable_extensions@; do
if test -f "$dir/$1" && test -x "$dir/$1"; then
...
Or you can write configure.ac in a more sofisticated way:
AC_SUBST(exeext_for, "")
AC_SUBST(exeext_done, "")
if test -n "$ac_executable_extensions"; then
exeext_for="for exec_ext in '' @ac_executable_extensions@; do"
exeext_done=done
fi
and texi2dvi.in would contain
for dir in $PATH; do
@exeext_for@
if test -f "$dir/$1" && test -x "$dir/$1"; then
...
fi
@exeext_done@
done
This way would texi2dvi stay simpler on unix-like platforms.
(Sorry, Karl, I don't volunteer tro prepare any patch, at least not now.
And I don't have any DJGPP or mingw system an hand for debugging.)
Have a nice day,
Stepan
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