generates too many bug reports.
* lib/autoconf/general.m4 (_AC_RUN_IFELSE): Pass the right exit
status when executing the ACTION-IF-FALSE.
* tests/base.at (AC_TRY_*): Rename as...
(AC_TRY_COMMAND): this.
(AC_RUN_IFELSE): New.
* tests/compile.at (Extensions, C keywords)
(AC_PROG_CPP requires AC_PROG_CC, GNU Fortran 77)
(Broken/missing compilers, AC_PROG_CPP with warnings)
(AC_PROG_CPP without warnings, AC_PROG_CPP via CC): Move to...
* tests/c.at (Extensions, C keywords)
(Broken/missing compilers, AC_PROG_CPP with warnings)
(AC_PROG_CPP without warnings, AC_PROG_CPP via CC)
(AC_PROG_CPP requires AC_PROG_CC): here and...
* tests/fortran.at (GNU Fortran 77): there.
* doc/autoconf.texi (autoconf Invocation): Fix the example:
AC_TRY_RUN is about compilation, not shell commands.
(Test Programs): AC_TRY_RUN works as used to be advertised.
+2001-09-27 Akim Demaille <akim@epita.fr>
+
+ Fix the passing of $? to ACTION-IF-FAILED in AC_TRY_RUN, that
+ generates too many bug reports.
+
+ * lib/autoconf/general.m4 (_AC_RUN_IFELSE): Pass the right exit
+ status when executing the ACTION-IF-FALSE.
+ * tests/base.at (AC_TRY_*): Rename as...
+ (AC_TRY_COMMAND): this.
+ (AC_RUN_IFELSE): New.
+ * tests/compile.at (Extensions, C keywords)
+ (AC_PROG_CPP requires AC_PROG_CC, GNU Fortran 77)
+ (Broken/missing compilers, AC_PROG_CPP with warnings)
+ (AC_PROG_CPP without warnings, AC_PROG_CPP via CC): Move to...
+ * tests/c.at (Extensions, C keywords)
+ (Broken/missing compilers, AC_PROG_CPP with warnings)
+ (AC_PROG_CPP without warnings, AC_PROG_CPP via CC)
+ (AC_PROG_CPP requires AC_PROG_CC): here and...
+ * tests/fortran.at (GNU Fortran 77): there.
+ * doc/autoconf.texi (autoconf Invocation): Fix the example:
+ AC_TRY_RUN is about compilation, not shell commands.
+ (Test Programs): AC_TRY_RUN works as used to be advertised.
+
2001-09-27 Akim Demaille <akim@epita.fr>
* lib/m4sugar/m4sh.m4 (AS_SHELL_SANITIZE): Fix bugs spotted by
** Bug fixes
- The top level $prefix is propagated to the AC_CONFIG_SUBDIRS configures.
+- AC_TRY_RUN
+ Under the user pressure, $? is finally available. Probably a mistake.
** C Macros
- AC_C_BIGENDIAN supports the cross-compiling case.
@example
AC_DEFUN([INNER],
-[AC_TRY_RUN([true])])
+[AC_TRY_RUN([exit (0)])])
AC_DEFUN([OUTER],
[INNER])
@acindex TRY_RUN
If @var{program} compiles and links successfully and returns an exit
status of 0 when executed, run shell commands @var{action-if-true}.
-Otherwise, run shell commands @var{action-if-false}; the exit status of
-the program should be available in the shell variable @samp{$?}, but has
-never been: don't depend on this.
+Otherwise, run shell commands @var{action-if-false}.
This macro double quotes @var{program}, the text of a program in the
current language (@pxref{Language Choice}), on which shell variable and
not run. If the optional shell commands @var{action-if-cross-compiling}
are given, they are run instead. Otherwise, @code{configure} prints
an error message and exits.
+
+In the @var{action-if-false} section, the exit status of the program is
+available in the shell variable @samp{$?}, but be very careful to limit
+yourself to positive values smaller than 127; bigger values shall be
+saved into a file by the @var{program}. Note also that you have simply
+no guarantee that this exit status is issued by the @var{program}, or by
+the failure of its compilation. In other words, use this feature if
+sadist only, it was reestablished because the Autoconf maintainers grew
+tired of receiving ``bug reports''.
@end defmac
Try to provide a pessimistic default value to use when cross-compiling
[echo "$as_me: program exited with status $ac_status" >&AS_MESSAGE_LOG_FD
echo "$as_me: failed program was:" >&AS_MESSAGE_LOG_FD
cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD
-m4_ifvaln([$3], [$3])dnl])[]dnl
+m4_ifvaln([$3],
+ [( exit $ac_status )
+$3])dnl])[]dnl
rm -f core core.* *.core conftest$ac_exeext conftest.$ac_objext m4_ifval([$1],
[conftest.$ac_ext])[]dnl
])# _AC_RUN_IFELSE
suite.at \
m4sugar.at m4sh.at \
base.at tools.at torture.at \
- compile.at \
+ compile.at c.at fortran.at \
semantics.at \
foreign.at
suite.at \
m4sugar.at m4sh.at \
base.at tools.at torture.at \
- compile.at \
+ compile.at c.at fortran.at \
semantics.at \
foreign.at
autoupdate ifnames
DIST_SOURCES =
DIST_COMMON = README Makefile.am Makefile.in autom4te.in autoreconf.in \
- autoupdate.in wrappl.in wrapsh.in
+ autoupdate.in configure configure.ac wrappl.in wrapsh.in
all: all-am
.SUFFIXES:
AT_CLEANUP
-## ---------------------- ##
-## AC_REQUIRE & AC_LANG. ##
-## ---------------------- ##
-
-AT_SETUP([AC_REQUIRE & AC_LANG])
-
-AT_DATA([configure.ac],
-[[AC_DEFUN([AC_F77_1],
-[AC_LANG_PUSH([Fortran 77])
-if test $ac_ext != f; then
- AC_MSG_ERROR([F77_1: current shell language is $ac_ext, expected Fortran])
-fi
-AC_LANG_POP
-])
-
-
-AC_DEFUN([AC_F77_2],
-[AC_LANG_PUSH([Fortran 77])
-AC_REQUIRE([AC_F77_1])
-if test $ac_ext != f; then
- AC_MSG_ERROR([F77_2: current shell language is $ac_ext, expected Fortran])
-fi
-AC_LANG_POP
-])
-
-AC_INIT
-AC_F77_2
-AS_EXIT(0)
-]])
-
-AT_CHECK_AUTOCONF
-AT_CHECK_CONFIGURE
-
-AT_CLEANUP
-
-
## ---------------- ##
## AC_CACHE_CHECK. ##
## ---------------- ##
AT_CLEANUP
-## ---------- ##
-## AC_TRY_*. ##
-## ---------- ##
+## ---------------- ##
+## AC_TRY_COMMAND. ##
+## ---------------- ##
-AT_SETUP([AC_TRY_*])
+AT_SETUP([AC_TRY_COMMAND])
AT_DATA([configure.ac],
[[AC_INIT
--- /dev/null
+# -*- Autotest -*-
+
+AT_BANNER([C low level compiling/preprocessing macros.])
+
+# Copyright 2000, 2001 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+
+# Since the macros which compile are required by most tests, check
+# them first. But remember that looking for a compiler is even more
+# primitive, so check those first.
+
+
+## ------------ ##
+## Extensions. ##
+## ------------ ##
+
+# As far as we know only `foo', `foo.exe' are possible executable,
+# and `foo.o', `foo.obj' are possible object files. Autoconf must not
+# know that, but it is OK for the test suite to take this into account.
+AT_CHECK_MACRO([Extensions],
+[[AC_PROG_CC
+case $ac_exeext in
+ '' | '.exe' ) ;;
+ * ) AC_MSG_ERROR([suspicious executable suffix: $ac_exeext]);;
+esac
+
+case $ac_objext in
+ 'o' | 'obj' ) ;;
+ * ) AC_MSG_ERROR([suspicious object suffix: $ac_objext]);;
+esac
+AS_EXIT([0])
+]])
+
+
+
+## -------------------------- ##
+## Broken/missing compilers. ##
+## -------------------------- ##
+
+
+# Check that Autoconf correctly diagnoses broken compilers, and in
+# particular, if it does not exit 77, the test suite is in trouble...
+# FIXME: Once a precise message decided, check stderr of configure.
+AT_SETUP([Broken/missing compilers])
+
+AT_DATA([configure.ac],
+[[AC_INIT
+CC=no-such-compiler
+AC_PROG_CC
+]])
+
+AT_CHECK_AUTOCONF
+AT_CHECK_CONFIGURE([], 77, ignore, ignore)
+
+AT_CLEANUP
+
+
+## ------------ ##
+## C keywords. ##
+## ------------ ##
+
+# GCC supports `const', `volatile', and `inline'.
+AT_CHECK_MACRO([C keywords],
+[[AC_PROG_CC
+AC_C_CONST
+AC_C_INLINE
+AC_C_VOLATILE
+case $GCC,$ac_cv_c_const,$ac_cv_c_inline,$ac_cv_c_volatile in
+ yes,*no*)
+ AC_MSG_ERROR([failed to detect `const', `inline' or `volatile' support]);;
+esac
+]])
+
+
+
+## --------------------------------- ##
+## AC_PROG_CPP requires AC_PROG_CC. ##
+## --------------------------------- ##
+
+# Must invoke AC_PROG_CC.
+AT_CHECK_MACRO([AC_PROG_CPP requires AC_PROG_CC],
+[[AC_PROG_CPP
+test -z "$CC" &&
+ AC_MSG_ERROR([looked for a C preprocessor without looking for a compiler])
+]])
+
+
+
+## --------------------------- ##
+## AC_PROG_CPP with warnings. ##
+## --------------------------- ##
+
+
+# It's Ok for strict preprocessors to produce warnings.
+
+AT_SETUP([AC_PROG_CPP with warnings])
+
+AT_DATA([mycpp],
+[[#! /bin/sh
+echo noise >&2
+exec ${1+"$@"}
+]])
+
+chmod +x mycpp
+
+_AT_CHECK_AC_MACRO(
+[[AC_PROG_CPP
+# If the preprocessor is not strict, just ignore
+test "x$ac_c_preproc_warn_flag" = xyes &&
+ AC_MSG_ERROR([preprocessor has no warning option], 77)
+CPP="./mycpp $CPP"
+AC_CHECK_HEADERS(stdio.h autoconf_io.h)]])
+
+AT_CHECK_DEFINES(
+[/* #undef HAVE_AUTOCONF_IO_H */
+#define HAVE_STDIO_H 1
+])
+
+AT_CLEANUP
+
+
+## ------------------------------ ##
+## AC_PROG_CPP without warnings. ##
+## ------------------------------ ##
+
+AT_SETUP([AC_PROG_CPP without warnings])
+
+# Ignore if /lib/cpp doesn't work
+AT_CHECK([/lib/cpp </dev/null || exit 77], [], [ignore], [ignore])
+
+# A cpp which exit status is meaningless.
+AT_DATA([mycpp],
+[[#! /bin/sh
+/lib/cpp ${1+"$@"}
+exit 0
+]])
+
+chmod +x mycpp
+
+_AT_CHECK_AC_MACRO(
+[[CPP=./mycpp
+AC_PROG_CPP
+test "x$ac_c_preproc_warn_flag" != xyes &&
+ AC_MSG_ERROR([failed to detect preprocessor warning option])
+AC_CHECK_HEADERS(stdio.h autoconf_io.h)]])
+
+AT_CHECK_DEFINES(
+[/* #undef HAVE_AUTOCONF_IO_H */
+#define HAVE_STDIO_H 1
+])
+
+AT_CLEANUP
+
+
+
+## -------------------- ##
+## AC_PROG_CPP via CC. ##
+## -------------------- ##
+
+
+# It's Ok for strict preprocessors to produce warnings.
+
+AT_SETUP([AC_PROG_CPP via CC])
+
+# Ignore if /lib/cpp doesn't work
+AT_CHECK([/lib/cpp </dev/null || exit 77], [], [ignore], [ignore])
+
+AT_DATA([mycc],
+[[#! /bin/sh
+echo "Annoying copyright message" >&2
+exec "$@"
+]])
+
+chmod +x mycc
+
+# We go through the following contortions, in order to have the
+# configure script go down the same codepaths as it would during a
+# normal CPP selection check. If we explicitly set CPP, it goes down
+# a different codepath.
+_AT_CHECK_AC_MACRO(
+[[AC_PROG_CC
+CC="./mycc $CC"
+AC_PROG_CPP
+# The test $CC compiler should have been selected.
+test "$CPP" != "$CC -E" &&
+ AC_MSG_ERROR([error messages on stderr cause the preprocessor selection to fail])
+
+# Exercise CPP.
+AC_CHECK_HEADERS(stdio.h autoconf_io.h)]])
+
+AT_CHECK_DEFINES(
+[/* #undef HAVE_AUTOCONF_IO_H */
+#define HAVE_STDIO_H 1
+])
+
+AT_CLEANUP
AT_CLEANUP
-## ------------ ##
-## Extensions. ##
-## ------------ ##
+## ---------------------- ##
+## AC_REQUIRE & AC_LANG. ##
+## ---------------------- ##
-# As far as we know only `foo', `foo.exe' are possible executable,
-# and `foo.o', `foo.obj' are possible object files. Autoconf must not
-# know that, but it is OK for the test suite to take this into account.
-AT_CHECK_MACRO([Extensions],
-[[AC_PROG_CC
-case $ac_exeext in
- '' | '.exe' ) ;;
- * ) AC_MSG_ERROR([suspicious executable suffix: $ac_exeext]);;
-esac
-
-case $ac_objext in
- 'o' | 'obj' ) ;;
- * ) AC_MSG_ERROR([suspicious object suffix: $ac_objext]);;
-esac
-AS_EXIT([0])
-]])
-
-
-
-## -------------------------- ##
-## Broken/missing compilers. ##
-## -------------------------- ##
-
-
-# Check that Autoconf correctly diagnoses broken compilers, and in
-# particular, if it does not exit 77, the test suite is in trouble...
-# FIXME: Once a precise message decided, check stderr of configure.
-AT_SETUP([Broken/missing compilers])
+AT_SETUP([AC_REQUIRE & AC_LANG])
AT_DATA([configure.ac],
-[[AC_INIT
-CC=no-such-compiler
-AC_PROG_CC
-]])
-
-AT_CHECK_AUTOCONF
-AT_CHECK_CONFIGURE([], 77, ignore, ignore)
-
-AT_CLEANUP
-
-
-## ------------ ##
-## C keywords. ##
-## ------------ ##
-
-# GCC supports `const', `volatile', and `inline'.
-AT_CHECK_MACRO([C keywords],
-[[AC_PROG_CC
-AC_C_CONST
-AC_C_INLINE
-AC_C_VOLATILE
-case $GCC,$ac_cv_c_const,$ac_cv_c_inline,$ac_cv_c_volatile in
- yes,*no*)
- AC_MSG_ERROR([failed to detect `const', `inline' or `volatile' support]);;
-esac
-]])
-
-
-
-## --------------------------------- ##
-## AC_PROG_CPP requires AC_PROG_CC. ##
-## --------------------------------- ##
-
-# Must invoke AC_PROG_CC.
-AT_CHECK_MACRO([AC_PROG_CPP requires AC_PROG_CC],
-[[AC_PROG_CPP
-test -z "$CC" &&
- AC_MSG_ERROR([looked for a C preprocessor without looking for a compiler])
-]])
-
-
-
-## --------------------------- ##
-## AC_PROG_CPP with warnings. ##
-## --------------------------- ##
-
-
-# It's Ok for strict preprocessors to produce warnings.
-
-AT_SETUP([AC_PROG_CPP with warnings])
-
-AT_DATA([mycpp],
-[[#! /bin/sh
-echo noise >&2
-exec ${1+"$@"}
-]])
-
-chmod +x mycpp
-
-_AT_CHECK_AC_MACRO(
-[[AC_PROG_CPP
-# If the preprocessor is not strict, just ignore
-test "x$ac_c_preproc_warn_flag" = xyes &&
- AC_MSG_ERROR([preprocessor has no warning option], 77)
-CPP="./mycpp $CPP"
-AC_CHECK_HEADERS(stdio.h autoconf_io.h)]])
-
-AT_CHECK_DEFINES(
-[/* #undef HAVE_AUTOCONF_IO_H */
-#define HAVE_STDIO_H 1
+[[AC_DEFUN([AC_F77_1],
+[AC_LANG_PUSH([Fortran 77])
+if test $ac_ext != f; then
+ AC_MSG_ERROR([F77_1: current shell language is $ac_ext, expected Fortran])
+fi
+AC_LANG_POP
])
-AT_CLEANUP
-
-## ------------------------------ ##
-## AC_PROG_CPP without warnings. ##
-## ------------------------------ ##
-
-AT_SETUP([AC_PROG_CPP without warnings])
-
-# Ignore if /lib/cpp doesn't work
-AT_CHECK([/lib/cpp </dev/null || exit 77], [], [ignore], [ignore])
+AC_DEFUN([AC_F77_2],
+[AC_LANG_PUSH([Fortran 77])
+AC_REQUIRE([AC_F77_1])
+if test $ac_ext != f; then
+ AC_MSG_ERROR([F77_2: current shell language is $ac_ext, expected Fortran])
+fi
+AC_LANG_POP
+])
-# A cpp which exit status is meaningless.
-AT_DATA([mycpp],
-[[#! /bin/sh
-/lib/cpp ${1+"$@"}
-exit 0
+AC_INIT
+AC_F77_2
+AS_EXIT(0)
]])
-chmod +x mycpp
-
-_AT_CHECK_AC_MACRO(
-[[CPP=./mycpp
-AC_PROG_CPP
-test "x$ac_c_preproc_warn_flag" != xyes &&
- AC_MSG_ERROR([failed to detect preprocessor warning option])
-AC_CHECK_HEADERS(stdio.h autoconf_io.h)]])
-
-AT_CHECK_DEFINES(
-[/* #undef HAVE_AUTOCONF_IO_H */
-#define HAVE_STDIO_H 1
-])
+AT_CHECK_AUTOCONF
+AT_CHECK_CONFIGURE
AT_CLEANUP
+## --------------- ##
+## AC_RUN_IFELSE. ##
+## --------------- ##
-## -------------------- ##
-## AC_PROG_CPP via CC. ##
-## -------------------- ##
+AT_SETUP([AC_RUN_IFELSE])
+AT_DATA([configure.ac],
+[[AC_INIT
-# It's Ok for strict preprocessors to produce warnings.
+AC_RUN_IFELSE([AC_LANG_PROGRAM([], [exit (0)])],
+ [],
+ [AC_MSG_ERROR([saw `exit 0' as a failure])])
-AT_SETUP([AC_PROG_CPP via CC])
+AC_RUN_IFELSE([AC_LANG_PROGRAM([], [exit (2)])],
+ [AC_MSG_ERROR([saw `exit 2' as a success])],
+ [status=$?
+test $status != 2 &&
+ AC_MSG_ERROR([did not get as 2 exit status: $status])])
-# Ignore if /lib/cpp doesn't work
-AT_CHECK([/lib/cpp </dev/null || exit 77], [], [ignore], [ignore])
+# The old stinky one.
+AC_TRY_RUN([int main () { exit (3); }],
+ [AC_MSG_ERROR([saw `exit 3' as a success])],
+ [status=$?
+test $status != 3 &&
+ AC_MSG_ERROR([did not get 3 as exit status: $status])])
-AT_DATA([mycc],
-[[#! /bin/sh
-echo "Annoying copyright message" >&2
-exec "$@"
]])
-chmod +x mycc
-
-# We go through the following contortions, in order to have the
-# configure script go down the same codepaths as it would during a
-# normal CPP selection check. If we explicitly set CPP, it goes down
-# a different codepath.
-_AT_CHECK_AC_MACRO(
-[[AC_PROG_CC
-CC="./mycc $CC"
-AC_PROG_CPP
-# The test $CC compiler should have been selected.
-test "$CPP" != "$CC -E" &&
- AC_MSG_ERROR([error messages on stderr cause the preprocessor selection to fail])
-
-# Exercise CPP.
-AC_CHECK_HEADERS(stdio.h autoconf_io.h)]])
-
-AT_CHECK_DEFINES(
-[/* #undef HAVE_AUTOCONF_IO_H */
-#define HAVE_STDIO_H 1
-])
+AT_CHECK_AUTOCONF
+AT_CHECK_CONFIGURE([-q])
AT_CLEANUP
-
## ------------------ ##
## AC_TRY_LINK_FUNC. ##
## ------------------ ##
[AC_MSG_ERROR([cannot find `printf'])])
AC_TRY_LINK_FUNC(Be_doomed_if_your_libc_has_a_function_named_like_this,
[AC_MSG_ERROR([found a nonexistent function])])])
-
-
-
-## --------------------- ##
-## Fortran 77 Compiler. ##
-## --------------------- ##
-
-
-AT_CHECK_MACRO([GNU Fortran 77],
-[[AC_LANG(Fortran 77)
-AC_LANG_COMPILER
-
-if AC_TRY_COMMAND([$F77 --version | grep GNU >&2]); then
- # Be sure to remove files which might be created by compilers that
- # don't support --version.
- rm -f a.exe a.out
- # Has GNU in --version.
- test "$G77" != yes &&
- AC_MSG_ERROR([failed to recognize GNU Fortran 77 compiler])
-else
- # Be sure to remove files which might be created by compilers that
- # don't support --version.
- rm -f a.exe a.out
- # Has not.
- test "$G77" = yes &&
- AC_MSG_ERROR([incorrectly recognized a GNU Fortran 77 compiler])
-fi]])
--- /dev/null
+# -*- Autotest -*-
+
+AT_BANNER([Fortran low level compiling/preprocessing macros.])
+
+# Copyright 2000, 2001 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+
+# Since the macros which compile are required by most tests, check
+# them first. But remember that looking for a compiler is even more
+# primitive, so check those first.
+
+
+## --------------------- ##
+## Fortran 77 Compiler. ##
+## --------------------- ##
+
+
+AT_CHECK_MACRO([GNU Fortran 77],
+[[AC_LANG(Fortran 77)
+AC_LANG_COMPILER
+
+if AC_TRY_COMMAND([$F77 --version | grep GNU >&2]); then
+ # Be sure to remove files which might be created by compilers that
+ # don't support --version.
+ rm -f a.exe a.out
+ # Has GNU in --version.
+ test "$G77" != yes &&
+ AC_MSG_ERROR([failed to recognize GNU Fortran 77 compiler])
+else
+ # Be sure to remove files which might be created by compilers that
+ # don't support --version.
+ rm -f a.exe a.out
+ # Has not.
+ test "$G77" = yes &&
+ AC_MSG_ERROR([incorrectly recognized a GNU Fortran 77 compiler])
+fi]])
# Language support.
m4_include([aclang.at])
+m4_include([c.at])
m4_include([acc.at])
+m4_include([fortran.at])
m4_include([acfortran.at])
# Checking that AC_CHECK_FOO macros work properly.
projects / thirdparty / autoconf.git / commitdiff
