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| author | Paolo Bonzini <bonzini@gnu.org> | 2008-10-20 15:35:42 +0200 |
|---|---|---|
| committer | Eric Blake <ebb9@byu.net> | 2008-10-22 11:29:18 -0600 |
| commit | 30249d93c1b4255390286a4713a65eca7327c13e (patch) | |
| tree | bdf8f844df81bab7aaa51b5c2782a3a3f7ff455c | |
| parent | 5042ddd81f94e67d95813d5c68cbdbdbf2324e11 (diff) | |
| download | autoconf-30249d93c1b4255390286a4713a65eca7327c13e.tar.gz | |
Use a shell function for _AC_LINK_IFELSE.
* lib/autoconf/general.m4 (_AC_LINK_IFELSE_BODY): New macro.
(_AC_LINK_IFELSE): Use a shell function.
Signed-off-by: Eric Blake <ebb9@byu.net>
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | lib/autoconf/general.m4 | 54 |
2 files changed, 42 insertions, 19 deletions
@@ -1,3 +1,10 @@ +2008-10-22 Paolo Bonzini <bonzini@gnu.org> + and Eric Blake <ebb9@byu.net> + + Use a shell function for _AC_LINK_IFELSE. + * lib/autoconf/general.m4 (_AC_LINK_IFELSE_BODY): New macro. + (_AC_LINK_IFELSE): Use a shell function. + 2008-10-22 Eric Blake <ebb9@byu.net> Fix autoconf logging commands. diff --git a/lib/autoconf/general.m4 b/lib/autoconf/general.m4 index 919e4903..04866c26 100644 --- a/lib/autoconf/general.m4 +++ b/lib/autoconf/general.m4 @@ -2524,6 +2524,33 @@ AU_DEFUN([AC_TRY_COMPILE], ## --------------------- ## +# _AC_LINK_IFELSE_BODY +# -------------------- +# Shell function body for _AC_LINK_IFELSE. +m4_define([_AC_LINK_IFELSE_BODY], +[ AS_LINENO_PUSH([$[]1]) + rm -f conftest.$ac_objext conftest$ac_exeext + AS_IF([_AC_DO_STDERR($ac_link) && { + test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" || + test ! -s conftest.err + } && test -s conftest$ac_exeext && { + test "$cross_compiling" = yes || + AS_TEST_X([conftest$ac_exeext]) + }], + [ac_retval=0], + [_AC_MSG_LOG_CONFTEST + ac_retval=1]) + # Delete also the IPA/IPO (Inter Procedural Analysis/Optimization) + # information created by the PGI compiler (conftest_ipa8_conftest.oo), + # as it would interfere with the next link command. + rm -rf conftest.dSYM + rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \ + conftest$ac_exeext + AS_LINENO_POP + return $ac_retval +])# _AC_LINK_IFELSE_BODY + + # _AC_LINK_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE]) # ------------------------------------------------------------- # Try to link PROGRAM. @@ -2535,25 +2562,14 @@ AU_DEFUN([AC_TRY_COMPILE], # reported by Chris Johns in # <http://lists.gnu.org/archive/html/autoconf/2007-03/msg00085.html>. # -m4_define([_AC_LINK_IFELSE], -[m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl -rm -f conftest.$ac_objext conftest$ac_exeext -AS_IF([_AC_DO_STDERR($ac_link) && { - test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" || - test ! -s conftest.err - } && test -s conftest$ac_exeext && { - test "$cross_compiling" = yes || - AS_TEST_X([conftest$ac_exeext]) - }], - [$2], - [_AC_MSG_LOG_CONFTEST - $3]) -dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization) -dnl information created by the PGI compiler (conftest_ipa8_conftest.oo), -dnl as it would interfere with the next link command. -rm -rf conftest.dSYM -rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \ - conftest$ac_exeext m4_ifval([$1], [conftest.$ac_ext])[]dnl +AC_DEFUN([_AC_LINK_IFELSE], +[AC_REQUIRE_SHELL_FN([ac_func_]_AC_LANG_ABBREV[_try_link], + [AS_FUNCTION_DESCRIBE([ac_func_]_AC_LANG_ABBREV[_try_link], [LINENO], + [Try to link conftest.$ac_ext, and return whether this succeeded.])], + [$0_BODY])]dnl +[m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])]dnl +[AS_IF([ac_func_[]_AC_LANG_ABBREV[]_try_link "$LINENO"], [$2], [$3]) +m4_ifvaln([$1], [rm -f conftest.$ac_ext])dnl ])# _AC_LINK_IFELSE |