Introduce a means to distinguish failures of `configure' due to

extern software (so that the test suite doesn't fail on them).

* acgeneral.m4 (AC_MSG_ERROR, AC_MSG_ERROR_UNQUOTED): Allow an
optional $2: exit status.
* doc/autoconf.texi: Document.
* acspecific.m4 (AC_PROG_CC_WORKS, PROG_CXX_WORKS,
AC_PROG_F77_WORKS): Exit 77 if the compiler does not work.

diff --git a/ChangeLog b/ChangeLog
index 9a60d8a3c0e35c6a1e30c1a423360f5814b331a0..9aef37e22dbc6689c40e8f0c6a872bf6f2c93529 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+1999-11-13  Akim Demaille  <akim@epita.fr>
+
+       Introduce a means to distinguish failures of `configure' due to
+       extern software (so that the test suite doesn't fail on them).
+
+       * acgeneral.m4 (AC_MSG_ERROR, AC_MSG_ERROR_UNQUOTED): Allow an
+       optional $2: exit status.
+       * doc/autoconf.texi: Document.
+       * acspecific.m4 (AC_PROG_CC_WORKS, PROG_CXX_WORKS,
+       AC_PROG_F77_WORKS): Exit 77 if the compiler does not work.
+
 1999-11-13  Akim Demaille  <akim@epita.fr>
 
        Clean up a bit the handling of the LANG stack.  More is needed.

diff --git a/acspecific.m4 b/acspecific.m4
index a93bdc09211141ea1ce7782552c090759317f83f..6fbb3eb3b9b7ede9ce0aa1b5670a1c5b78e3a750 100644 (file)
--- a/acspecific.m4
+++ b/acspecific.m4
@@ -213,7 +213,7 @@ AC_TRY_COMPILER([int main(){return(0);}],
 AC_LANG_RESTORE
 AC_MSG_RESULT($ac_cv_prog_cc_works)
 if test $ac_cv_prog_cc_works = no; then
-  AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.])
+  AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.], 77)
 fi
 AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $CPPFLAGS $LDFLAGS) is a cross-compiler])
 AC_MSG_RESULT($ac_cv_prog_cc_cross)
@@ -232,7 +232,7 @@ AC_TRY_COMPILER([int main(){return(0);}],
 AC_LANG_RESTORE
 AC_MSG_RESULT($ac_cv_prog_cxx_works)
 if test $ac_cv_prog_cxx_works = no; then
-  AC_MSG_ERROR([installation or configuration problem: C++ compiler cannot create executables.])
+  AC_MSG_ERROR([installation or configuration problem: C++ compiler cannot create executables.], 77)
 fi
 AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $CPPFLAGS $LDFLAGS) is a cross-compiler])
 AC_MSG_RESULT($ac_cv_prog_cxx_cross)
@@ -257,7 +257,7 @@ AC_TRY_COMPILER(
 AC_LANG_RESTORE
 AC_MSG_RESULT($ac_cv_prog_f77_works)
 if test $ac_cv_prog_f77_works = no; then
-  AC_MSG_ERROR([installation or configuration problem: Fortran 77 compiler cannot create executables.])
+  AC_MSG_ERROR([installation or configuration problem: Fortran 77 compiler cannot create executables.], 77)
 fi
 AC_MSG_CHECKING([whether the Fortran 77 compiler ($F77 $FFLAGS $LDFLAGS) is a cross-compiler])
 AC_MSG_RESULT($ac_cv_prog_f77_cross)
@@ -2924,7 +2924,7 @@ EOF
 
       AC_TRY_LINK_FUNC(${foo_bar}, f77_underscore=double)
 
-      if test x"$f77_case" = x -o x"$f77_underscore" = x; then
+      if test x"$f77_case" = x || test x"$f77_underscore" = x; then
         ac_cv_f77_mangling="unknown"
       else
         ac_cv_f77_mangling="$f77_case case, $f77_underscore underscores"

diff --git a/autoconf.texi b/autoconf.texi
index 928020779f2c3cdb4c2f7a3ca2820041e9101469..a827f0460692f9842a233f55a924966dea0557aa 100644 (file)
--- a/autoconf.texi
+++ b/autoconf.texi
@@ -2631,7 +2631,7 @@ is declared in a system header file, either @file{signal.h} or
 These macros are used to find declarations not covered by the particular
 test macros.
 
-@defmac AC_CHECK_DECL (@var{symbol}, @ovar{action-if-found}, @ovar{action-if-not-found}, o@var{includes})
+@defmac AC_CHECK_DECL (@var{symbol}, @ovar{action-if-found}, @ovar{action-if-not-found}, @ovar{includes})
 @maindex CHECK_DECL
 If the declaration of @var{symbol} (a function or a variable) is needed
 because it is not declared in @var{includes}, run the shell commands
@@ -4240,11 +4240,11 @@ This macro prints nothing if @code{configure} is run with the
 @samp{--quiet} or @samp{--silent} option.
 @end defmac
 
-@defmac AC_MSG_ERROR (@var{error-description})
+@defmac AC_MSG_ERROR (@var{error-description}, @ovar{exit-status})
 @maindex MSG_ERROR
 Notify the user of an error that prevents @code{configure} from
 completing.  This macro prints an error message on the standard error
-output and exits @code{configure} with a nonzero status.
+output and exits @code{configure} with @var{exit-status} (1 by default).
 @var{error-description} should be something like @samp{invalid value
 $HOME for \$HOME}.
 @end defmac

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 928020779f2c3cdb4c2f7a3ca2820041e9101469..a827f0460692f9842a233f55a924966dea0557aa 100644 (file)
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -2631,7 +2631,7 @@ is declared in a system header file, either @file{signal.h} or
 These macros are used to find declarations not covered by the particular
 test macros.
 
-@defmac AC_CHECK_DECL (@var{symbol}, @ovar{action-if-found}, @ovar{action-if-not-found}, o@var{includes})
+@defmac AC_CHECK_DECL (@var{symbol}, @ovar{action-if-found}, @ovar{action-if-not-found}, @ovar{includes})
 @maindex CHECK_DECL
 If the declaration of @var{symbol} (a function or a variable) is needed
 because it is not declared in @var{includes}, run the shell commands
@@ -4240,11 +4240,11 @@ This macro prints nothing if @code{configure} is run with the
 @samp{--quiet} or @samp{--silent} option.
 @end defmac
 
-@defmac AC_MSG_ERROR (@var{error-description})
+@defmac AC_MSG_ERROR (@var{error-description}, @ovar{exit-status})
 @maindex MSG_ERROR
 Notify the user of an error that prevents @code{configure} from
 completing.  This macro prints an error message on the standard error
-output and exits @code{configure} with a nonzero status.
+output and exits @code{configure} with @var{exit-status} (1 by default).
 @var{error-description} should be something like @samp{invalid value
 $HOME for \$HOME}.
 @end defmac

diff --git a/lib/autoconf/specific.m4 b/lib/autoconf/specific.m4
index a93bdc09211141ea1ce7782552c090759317f83f..6fbb3eb3b9b7ede9ce0aa1b5670a1c5b78e3a750 100644 (file)
--- a/lib/autoconf/specific.m4
+++ b/lib/autoconf/specific.m4
@@ -213,7 +213,7 @@ AC_TRY_COMPILER([int main(){return(0);}],
 AC_LANG_RESTORE
 AC_MSG_RESULT($ac_cv_prog_cc_works)
 if test $ac_cv_prog_cc_works = no; then
-  AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.])
+  AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.], 77)
 fi
 AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $CPPFLAGS $LDFLAGS) is a cross-compiler])
 AC_MSG_RESULT($ac_cv_prog_cc_cross)
@@ -232,7 +232,7 @@ AC_TRY_COMPILER([int main(){return(0);}],
 AC_LANG_RESTORE
 AC_MSG_RESULT($ac_cv_prog_cxx_works)
 if test $ac_cv_prog_cxx_works = no; then
-  AC_MSG_ERROR([installation or configuration problem: C++ compiler cannot create executables.])
+  AC_MSG_ERROR([installation or configuration problem: C++ compiler cannot create executables.], 77)
 fi
 AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $CPPFLAGS $LDFLAGS) is a cross-compiler])
 AC_MSG_RESULT($ac_cv_prog_cxx_cross)
@@ -257,7 +257,7 @@ AC_TRY_COMPILER(
 AC_LANG_RESTORE
 AC_MSG_RESULT($ac_cv_prog_f77_works)
 if test $ac_cv_prog_f77_works = no; then
-  AC_MSG_ERROR([installation or configuration problem: Fortran 77 compiler cannot create executables.])
+  AC_MSG_ERROR([installation or configuration problem: Fortran 77 compiler cannot create executables.], 77)
 fi
 AC_MSG_CHECKING([whether the Fortran 77 compiler ($F77 $FFLAGS $LDFLAGS) is a cross-compiler])
 AC_MSG_RESULT($ac_cv_prog_f77_cross)
@@ -2924,7 +2924,7 @@ EOF
 
       AC_TRY_LINK_FUNC(${foo_bar}, f77_underscore=double)
 
-      if test x"$f77_case" = x -o x"$f77_underscore" = x; then
+      if test x"$f77_case" = x || test x"$f77_underscore" = x; then
         ac_cv_f77_mangling="unknown"
       else
         ac_cv_f77_mangling="$f77_case case, $f77_underscore underscores"