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* lib/autoconf/lang.m4 (_AC_COMPILER_EXEEXT_DEFAULT): Drop the

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initialization of `ac_cv_exeext', do not override it if it was
already set, unless it was set to `no', for compatibility with
Autoconf-2.13, and comment this.
Do not export `ac_cv_exeext', Libtool hasn't needed this for years.
(_AC_COMPILER_EXEEXT_DEFAULT): Likewise, do not export it.
(_AC_COMPILER_EXEEXT_WORKS, _AC_COMPILER_EXEEXT_CROSS): Typos.
* doc/autoconf.texi (Compilers and Preprocessors) <EXEEXT>:
Document that this test may be overridden by setting
`ac_cv_exeext'.
This commit is contained in:
Ralf Wildenhues 2006-05-26 17:25:35 +00:00
parent b336169d61
commit cf78c7e16e
3 changed files with 36 additions and 13 deletions
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14
ChangeLog
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@ -1,3 +1,17 @@
2006-05-26 Stepan Kasal <kasal@ucw.cz>
and Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* lib/autoconf/lang.m4 (_AC_COMPILER_EXEEXT_DEFAULT): Drop the
initialization of `ac_cv_exeext', do not override it if it was
already set, unless it was set to `no', for compatibility with
Autoconf-2.13, and comment this.
Do not export `ac_cv_exeext', Libtool hasn't needed this for years.
(_AC_COMPILER_EXEEXT_DEFAULT): Likewise, do not export it.
(_AC_COMPILER_EXEEXT_WORKS, _AC_COMPILER_EXEEXT_CROSS): Typos.
* doc/autoconf.texi (Compilers and Preprocessors) <EXEEXT>:
Document that this test may be overridden by setting
`ac_cv_exeext'.
2006-05-26 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Revert these two patches:

4
doc/autoconf.texi
View File

@ -5911,7 +5911,9 @@ implemented. In case of doubt, read the documentation of the former
All the tests for compilers (@code{AC_PROG_CC}, @code{AC_PROG_CXX},
@code{AC_PROG_F77}) define the output variable @code{EXEEXT} based on
the output of the compiler, typically to the empty string if
Posix and @samp{.exe} if a @acronym{DOS} variant.
Posix and @samp{.exe} if a @acronym{DOS} variant. It can be overridden
by passing the argument @samp{ac_cv_exeext=@var{ext}} to
@command{configure}.
@ovindex OBJEXT
They also define the output variable @code{OBJEXT} based on the

31
lib/autoconf/lang.m4
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@ -495,9 +495,11 @@ done
rm -f $ac_rmfiles
AS_IF([AC_TRY_EVAL(ac_link_default)],
[# Be careful to initialize this variable, since it used to be cached.
# Otherwise an old cache value of `no' led to `EXEEXT = no' in a Makefile.
ac_cv_exeext=
[# Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
# in a Makefile. We should not override ac_cv_exeext if it was cached,
# so that the user can short-circuit this test for compilers unknown to
# Autoconf.
for ac_file in $ac_files
do
test -f "$ac_file" || continue
@ -509,16 +511,22 @@ do
# certainly right.
break;;
*.* )
ac_cv_exeext=`expr "$ac_file" : ['[^.]*\(\..*\)']`
# FIXME: I believe we export ac_cv_exeext for Libtool,
# but it would be cool to find out if it's true. Does anybody
# maintain Libtool? --akim.
export ac_cv_exeext
if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no;
then :; else
ac_cv_exeext=`expr "$ac_file" : ['[^.]*\(\..*\)']`
fi
# We set ac_cv_exeext here because the later test for it is not
# safe: cross compilers may not add the suffix if given an `-o'
# argument, so we may need to know it at that point already.
# Even if this section looks crufty: it has the advantage of
# actually working.
break;;
* )
break;;
esac
done],
done
test "$ac_cv_exeext" = no && ac_cv_exeext=
],
[_AC_MSG_LOG_CONFTEST
AC_MSG_FAILURE([_AC_LANG compiler cannot create executables], 77)])
ac_exeext=$ac_cv_exeext
@ -529,7 +537,7 @@ AC_MSG_RESULT([$ac_file])
# _AC_COMPILER_EXEEXT_WORKS
# -------------------------
m4_define([_AC_COMPILER_EXEEXT_WORKS],
[# Check the compiler produces executables we can run. If not, either
[# Check that the compiler produces executables we can run. If not, either
# the compiler is broken, or we cross compile.
AC_MSG_CHECKING([whether the _AC_LANG compiler works])
# FIXME: These cross compiler hacks should be removed for Autoconf 3.0
@ -553,7 +561,7 @@ AC_MSG_RESULT([yes])
# _AC_COMPILER_EXEEXT_CROSS
# -------------------------
m4_define([_AC_COMPILER_EXEEXT_CROSS],
[# Check the compiler produces executables we can run. If not, either
[# Check that the compiler produces executables we can run. If not, either
# the compiler is broken, or we cross compile.
AC_MSG_CHECKING([whether we are cross compiling])
AC_MSG_RESULT([$cross_compiling])
@ -576,7 +584,6 @@ for ac_file in conftest.exe conftest conftest.*; do
case $ac_file in
_AC_COMPILER_EXEEXT_REJECT ) ;;
*.* ) ac_cv_exeext=`expr "$ac_file" : ['[^.]*\(\..*\)']`
export ac_cv_exeext
break;;
* ) break;;
esac