[SCM] GNU Autoconf source repository branch, master, updated. v2.67-78-g6117b5a

[Eric Blake]

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- Log -----------------------------------------------------------------
commit 6117b5a630834020b77722acd7e76580e113b728
Author: Eric Blake <address@hidden>
Date:   Tue Sep 21 17:09:09 2010 -0600

    AC_LIBOBJ: optimize internal use
    
    * lib/autoconf/general.m4 (_AC_LIBOBJ): Move literal check...
    (AC_LIBOBJ): ...into callers.
    * lib/autoconf/functions.m4 (_AC_REPLACE_FUNC): Likewise, thus
    avoiding a second call to AS_LITERAL_IF.
    
    Signed-off-by: Eric Blake <address@hidden>

commit 043b96c5db243d69f817bebd2ef90dd560625f36
Author: Eric Blake <address@hidden>
Date:   Tue Sep 21 17:00:09 2010 -0600

    AC_REPLACE_FUNCS: restore shell loop for non-literal
    
    * lib/autoconf/functions.m4 (AC_REPLACE_FUNCS): Handle
    non-literals, which was lost in 2010-02-26 optimization.
    * tests/semantics.at (AC_REPLACE_FUNCS): Enhance test.
    * NEWS: Document the fix.
    * THANKS: Update.
    Reported by Wiseman Jun.
    
    Signed-off-by: Eric Blake <address@hidden>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                 |   14 ++++++++++++++
 NEWS                      |   10 +++++++---
 THANKS                    |    1 +
 lib/autoconf/functions.m4 |    8 ++++++--
 lib/autoconf/general.m4   |   12 ++++--------
 tests/semantics.at        |   13 ++++++++++---
 6 files changed, 42 insertions(+), 16 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index f705a59..a1a451a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,19 @@
 2010-09-21  Eric Blake  <address@hidden>
 
+       AC_LIBOBJ: optimize internal use
+       * lib/autoconf/general.m4 (_AC_LIBOBJ): Move literal check...
+       (AC_LIBOBJ): ...into callers.
+       * lib/autoconf/functions.m4 (_AC_REPLACE_FUNC): Likewise, thus
+       avoiding a second call to AS_LITERAL_IF.
+
+       AC_REPLACE_FUNCS: restore shell loop for non-literal
+       * lib/autoconf/functions.m4 (AC_REPLACE_FUNCS): Handle
+       non-literals, which was lost in 2010-02-26 optimization.
+       * tests/semantics.at (AC_REPLACE_FUNCS): Enhance test.
+       * NEWS: Document the fix.
+       * THANKS: Update.
+       Reported by Wiseman Jun.
+
        maint: resync upstream files
        * build-aux/gendocs.sh: Resync via 'make fetch'.
 
diff --git a/NEWS b/NEWS
index 65013c7..1cae249 100644
--- a/NEWS
+++ b/NEWS
@@ -5,12 +5,16 @@ GNU Autoconf NEWS - User visible changes.
 ** AC_MSG_ERROR (and AS_ERROR) can once again be followed immediately by
    `dnl'.  Regression introduced in 2.66.
 
-** AT_BANNER() with empty argument will cause visual separation from previous
-   test category.
-
 ** AC_INIT again allows URLs with '?' for its BUG-REPORT argument.
    Regression introduced in 2.66.
 
+** AC_REPLACE_FUNCS again allows a non-literal argument, such as a shell
+   variable that expands to a list of functions to check.  Regression
+   introduced in 2.66.
+
+** AT_BANNER() with empty argument will cause visual separation from previous
+   test category.
+
 ** The macros AC_PREPROC_IFELSE, AC_COMPILE_IFELSE, AC_LINK_IFELSE, and
    AC_RUN_IFELSE now warn if the first argument failed to use
    AC_LANG_SOURCE or AC_LANG_PROGRAM to generate the conftest file
diff --git a/THANKS b/THANKS
index 4acb36f..ed871a8 100644
--- a/THANKS
+++ b/THANKS
@@ -414,6 +414,7 @@ Wayne Chapeskie             address@hidden
 Werner Lemberg              address@hidden
 Wilfredo Sanchez            address@hidden
 William Pursell             address@hidden
+Wiseman Jun                 address@hidden
 Wolfgang Mueller            address@hidden
 Yaakov Selkowitz            address@hidden
 Yavor Doganov               address@hidden
diff --git a/lib/autoconf/functions.m4 b/lib/autoconf/functions.m4
index f03991b..70a7ddf 100644
--- a/lib/autoconf/functions.m4
+++ b/lib/autoconf/functions.m4
@@ -123,7 +123,7 @@ m4_define([_AC_FUNCS_EXPANSION],
 m4_define([_AC_REPLACE_FUNC],
 [AC_CHECK_FUNC([$1],
   [_AH_CHECK_FUNC([$1])AC_DEFINE(AS_TR_CPP([HAVE_$1]))],
-  [AC_LIBOBJ([$1])])])
+  [_AC_LIBOBJ([$1])AC_LIBSOURCE([$1.c])])])
 
 # AC_REPLACE_FUNCS(FUNCTION...)
 # -----------------------------
@@ -131,8 +131,12 @@ m4_define([_AC_REPLACE_FUNC],
 # equivalent of AC_CHECK_FUNC, then call AC_LIBOBJ if the function
 # was not found.
 AC_DEFUN([AC_REPLACE_FUNCS],
+[AS_LITERAL_IF([$1],
 [m4_map_args_w([$1], [_AC_REPLACE_FUNC(], [)
-])])
+])],
+[AC_CHECK_FUNCS([$1],
+  [_AH_CHECK_FUNC([$ac_func])AC_DEFINE(AS_TR_CPP([HAVE_$ac_func]))],
+  [_AC_LIBOBJ([$ac_func])])])])
 
 
 # AC_TRY_LINK_FUNC(FUNC, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
diff --git a/lib/autoconf/general.m4 b/lib/autoconf/general.m4
index 1410921..59c47ab 100644
--- a/lib/autoconf/general.m4
+++ b/lib/autoconf/general.m4
@@ -2926,10 +2926,7 @@ AC_DEFUN([AC_LIBSOURCES],
 # --------------------------------------------
 # We need `FILE-NAME-NOEXT.o', save this into `LIBOBJS'.
 m4_define([_AC_LIBOBJ],
-[AS_LITERAL_WORD_IF([$1],
-              [AC_LIBSOURCE([$1.c])],
-              [$2])dnl
-case " $LIB@&address@hidden " in
+[case " $LIB@&address@hidden " in
   *" $1.$ac_objext "* ) ;;
   *) AC_SUBST([LIB@&address@hidden, ["$LIB@&address@hidden $1.$ac_objext"]) ;;
 esac
@@ -2940,10 +2937,9 @@ esac
 # --------------------------
 # We need `FILE-NAME-NOEXT.o', save this into `LIBOBJS'.
 AC_DEFUN([AC_LIBOBJ],
-[_AC_LIBOBJ([$1],
-           [AC_DIAGNOSE(syntax,
-                        [$0($1): you should use literals])])dnl
-])
+[_AC_LIBOBJ([$1])]dnl
+[AS_LITERAL_WORD_IF([$1], [AC_LIBSOURCE([$1.c])],
+  [AC_DIAGNOSE([syntax], [$0($1): you should use literals])])])
 
 
 # _AC_LIBOBJS_NORMALIZE
diff --git a/tests/semantics.at b/tests/semantics.at
index 48136cd..9fd08e0 100644
--- a/tests/semantics.at
+++ b/tests/semantics.at
@@ -176,8 +176,13 @@ AT_DATA([config.in],
 ])
 
 AT_CONFIGURE_AC(
-[AC_CONFIG_FILES(config.libobjs:config.in)
-AC_REPLACE_FUNCS(printf autoconf_ftnirp)])
+[AC_CONFIG_FILES([config.libobjs:config.in])
+AC_REPLACE_FUNCS([printf autoconf_ftnirp])
+funcs='fprintf autoconf_ftnirpf'
+AH_TEMPLATE([HAVE_FPRINTF], [])
+AH_TEMPLATE([HAVE_AUTOCONF_FTNIRPF], [])
+AC_REPLACE_FUNCS([$funcs])
+AS_UNSET([funcs])])
 
 AT_CHECK_AUTOCONF([-W obsolete])
 AT_CHECK_AUTOHEADER
@@ -185,11 +190,13 @@ AT_CHECK_CONFIGURE
 AT_CHECK_ENV
 AT_CHECK_DEFINES(
 [/* #undef HAVE_AUTOCONF_FTNIRP */
+/* #undef HAVE_AUTOCONF_FTNIRPF */
+#define HAVE_FPRINTF 1
 #define HAVE_PRINTF 1
 ])
 
 AT_CHECK([sed 's/  */ /g;s/^ //;s/ $//' config.libobjs], [],
-        [${LIBOBJDIR}autoconf_ftnirp$U.o
+        [${LIBOBJDIR}autoconf_ftnirp$U.o ${LIBOBJDIR}autoconf_ftnirpf$U.o
 ])
 
 AT_CLEANUP


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