Hello, On Mon, Mar 20, 2006 at 05:02:52PM +0100, Ralf Wildenhues wrote: > * Martin Michlmayr wrote on Mon, Mar 20, 2006 at 02:15:34PM CET: > > Well, I think in this case some more sanity checks are justified yes, you are right, we should do the check ``whether FOO compiler works'' again for each language. I prepared the following patch. (Be sure to update your CVS checkout before applying it.) Have a nice fortnight, Stepan
2006-04-01 Stepan Kasal <kasal@xxxxxx> * lib/autoconf/c.m4 (AC_PROG_CC, AC_PROG_CXX, AC_PROG_OBJC): Call _AC_COMPILER_EXEEXT instead of m4_expand_once([_AC_COMPILER_EXEEXT]) * lib/autoconf/fortran.m4 (_AC_PROG_FC): Likewise. * lib/autoconf/lang.m4 (_AC_COMPILER_EXEEXT_TESTS): On subsequent calls, for a new language, only check that the compiler works. (AC_NO_EXECUTABLES): Change the redefinition of _AC_COMPILER_EXEEXT_TESTS so that on subsequent calls, it checks that the new language's compiler works if ac_no_link=no, and does nothing otherwise. Index: lib/autoconf/c.m4 =================================================================== RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/c.m4,v retrieving revision 1.215 diff -u -r1.215 c.m4 --- lib/autoconf/c.m4 1 Apr 2006 21:45:13 -0000 1.215 +++ lib/autoconf/c.m4 1 Apr 2006 22:03:25 -0000 @@ -547,7 +547,7 @@ _AC_EVAL([$ac_compiler -v >&AS_MESSAGE_LOG_FD]) _AC_EVAL([$ac_compiler -V >&AS_MESSAGE_LOG_FD]) -m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl +_AC_COMPILER_EXEEXT _AC_LANG_COMPILER_GNU GCC=`test $ac_compiler_gnu = yes && echo yes` _AC_PROG_CC_G @@ -782,7 +782,7 @@ _AC_EVAL([$ac_compiler -v >&AS_MESSAGE_LOG_FD]) _AC_EVAL([$ac_compiler -V >&AS_MESSAGE_LOG_FD]) -m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl +_AC_COMPILER_EXEEXT _AC_LANG_COMPILER_GNU GXX=`test $ac_compiler_gnu = yes && echo yes` _AC_PROG_CXX_G @@ -951,7 +951,7 @@ _AC_EVAL([$ac_compiler -v >&AS_MESSAGE_LOG_FD]) _AC_EVAL([$ac_compiler -V >&AS_MESSAGE_LOG_FD]) -m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl +_AC_COMPILER_EXEEXT _AC_LANG_COMPILER_GNU GOBJC=`test $ac_compiler_gnu = yes && echo yes` _AC_PROG_OBJC_G Index: lib/autoconf/fortran.m4 =================================================================== RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/fortran.m4,v retrieving revision 1.203 diff -u -r1.203 fortran.m4 --- lib/autoconf/fortran.m4 1 Apr 2006 21:45:13 -0000 1.203 +++ lib/autoconf/fortran.m4 1 Apr 2006 22:03:26 -0000 @@ -369,7 +369,7 @@ _AC_EVAL([$ac_compiler -V >&AS_MESSAGE_LOG_FD]) rm -f a.out -m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl +_AC_COMPILER_EXEEXT # If we don't use `.F' as extension, the preprocessor is not run on the # input file. (Note that this only needs to work for GNU compilers.) ac_save_ext=$ac_ext Index: lib/autoconf/lang.m4 =================================================================== RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/lang.m4,v retrieving revision 1.176 diff -u -r1.176 lang.m4 --- lib/autoconf/lang.m4 1 Apr 2006 21:45:13 -0000 1.176 +++ lib/autoconf/lang.m4 1 Apr 2006 22:03:27 -0000 @@ -379,22 +379,25 @@ AC_BEFORE([$0], [AC_LINK_IFELSE]) m4_define([_AC_COMPILER_EXEEXT_TESTS], -[if AC_TRY_EVAL(ac_link); then - ac_no_link=no +[m4_expand_once([ + if AC_TRY_EVAL(ac_link); then + ac_no_link=no + else + ac_no_link=yes + # Setting cross_compile will disable run tests; it will + # also disable AC_CHECK_FILE but that's generally + # correct if we can't link. + cross_compiling=yes + EXEEXT= + _AC_COMPILER_EXEEXT_CROSS + fi]) +if test $ac_no_link = no; then ]m4_defn([_AC_COMPILER_EXEEXT_TESTS])[ -else - ac_no_link=yes - # Setting cross_compile will disable run tests; it will - # also disable AC_CHECK_FILE but that's generally - # correct if we can't link. - cross_compiling=yes - EXEEXT= - _AC_COMPILER_EXEEXT_CROSS fi ]) m4_define([AC_LINK_IFELSE], -[if test x$ac_no_link = xyes; then +[if test $ac_no_link = yes; then AC_MSG_ERROR([Link tests are not allowed after AC@&t@_NO_EXECUTABLES.]) fi ]m4_defn([AC_LINK_IFELSE])) @@ -566,8 +569,9 @@ # This macro is modified by the AC_NO_EXECUTABLES hack. m4_define([_AC_COMPILER_EXEEXT_TESTS], [_AC_COMPILER_EXEEXT_DEFAULT -_AC_COMPILER_EXEEXT_CROSS -_AC_COMPILER_EXEEXT_O]) + m4_expand_once([_AC_COMPILER_EXEEXT_CROSS + _AC_COMPILER_EXEEXT_O]) +]) # _AC_COMPILER_EXEEXT @@ -607,7 +611,7 @@ ac_clean_files=$ac_clean_files_save -_AC_COMPILER_OBJEXT +m4_expand_once([_AC_COMPILER_OBJEXT]) rm -f conftest.* ])# _AC_COMPILER_EXEEXT
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