[Python-checkins] cpython: - Issue #14324: Fix configure tests for cross builds.

[matthias.klose]

http://hg.python.org/cpython/rev/29ee48f843ec
changeset:   75705:29ee48f843ec
user:        Matthias Klose <doko at ubuntu.com>
date:        Thu Mar 15 19:51:34 2012 +0100
summary:
  - Issue #14324: Fix configure tests for cross builds.

when configured --with(out)-computed-gotos for a cross, use this value instead of defaulting to no.

files:
  configure    |  71 ++++++++++++++++++++-------------------
  configure.ac |  51 +++++++++++++++-------------
  2 files changed, 64 insertions(+), 58 deletions(-)


diff --git a/configure b/configure
--- a/configure
+++ b/configure
@@ -14022,13 +14022,47 @@
 
 fi
 
+# Check for --with-computed-gotos
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-computed-gotos" >&5
+$as_echo_n "checking for --with-computed-gotos... " >&6; }
+
+# Check whether --with-computed-gotos was given.
+if test "${with_computed_gotos+set}" = set; then :
+  withval=$with_computed_gotos;
+if test "$withval" = yes
+then
+
+$as_echo "#define USE_COMPUTED_GOTOS 1" >>confdefs.h
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+fi
+if test "$withval" = no
+then
+
+$as_echo "#define USE_COMPUTED_GOTOS 0" >>confdefs.h
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no value specified" >&5
+$as_echo "no value specified" >&6; }
+fi
+
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports computed gotos" >&5
 $as_echo_n "checking whether $CC supports computed gotos... " >&6; }
 if ${ac_cv_computed_gotos+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test "$cross_compiling" = yes; then :
-  ac_cv_computed_gotos=no
+  if test "${with_computed_gotos+set}" = set; then
+   ac_cv_computed_gotos="$with_computed_gotos -- configured --with(out)-computed-gotos"
+ else
+   ac_cv_computed_gotos=no
+ fi
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -14058,42 +14092,11 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_computed_gotos" >&5
 $as_echo "$ac_cv_computed_gotos" >&6; }
-if test "$ac_cv_computed_gotos" = yes
-then
+case "$ac_cv_computed_gotos" in yes*)
 
 $as_echo "#define HAVE_COMPUTED_GOTOS 1" >>confdefs.h
 
-fi
-
-# Check for --with-computed-gotos
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-computed-gotos" >&5
-$as_echo_n "checking for --with-computed-gotos... " >&6; }
-
-# Check whether --with-computed-gotos was given.
-if test "${with_computed_gotos+set}" = set; then :
-  withval=$with_computed_gotos;
-if test "$withval" = yes
-then
-
-$as_echo "#define USE_COMPUTED_GOTOS 1" >>confdefs.h
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-fi
-if test "$withval" = no
-then
-
-$as_echo "#define USE_COMPUTED_GOTOS 0" >>confdefs.h
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no value specified" >&5
-$as_echo "no value specified" >&6; }
-fi
-
+esac
 
 case $ac_sys_system in
 AIX*)
diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -4239,30 +4239,6 @@
    wide chars that would be converted.])
 fi
 
-AC_MSG_CHECKING(whether $CC supports computed gotos)
-AC_CACHE_VAL(ac_cv_computed_gotos,
-AC_RUN_IFELSE([AC_LANG_SOURCE([[[
-int main(int argc, char **argv)
-{
-    static void *targets[1] = { &&LABEL1 };
-    goto LABEL2;
-LABEL1:
-    return 0;
-LABEL2:
-    goto *targets[0];
-    return 1;
-}
-]]])],
-[ac_cv_computed_gotos=yes],
-[ac_cv_computed_gotos=no],
-[ac_cv_computed_gotos=no]))
-AC_MSG_RESULT($ac_cv_computed_gotos)
-if test "$ac_cv_computed_gotos" = yes
-then
-  AC_DEFINE(HAVE_COMPUTED_GOTOS, 1,
-  [Define if the C compiler supports computed gotos.])
-fi
-
 # Check for --with-computed-gotos
 AC_MSG_CHECKING(for --with-computed-gotos)
 AC_ARG_WITH(computed-gotos,
@@ -4284,6 +4260,33 @@
 ],
 [AC_MSG_RESULT(no value specified)])
 
+AC_MSG_CHECKING(whether $CC supports computed gotos)
+AC_CACHE_VAL(ac_cv_computed_gotos,
+AC_RUN_IFELSE([AC_LANG_SOURCE([[[
+int main(int argc, char **argv)
+{
+    static void *targets[1] = { &&LABEL1 };
+    goto LABEL2;
+LABEL1:
+    return 0;
+LABEL2:
+    goto *targets[0];
+    return 1;
+}
+]]])],
+[ac_cv_computed_gotos=yes],
+[ac_cv_computed_gotos=no],
+[if test "${with_computed_gotos+set}" = set; then
+   ac_cv_computed_gotos="$with_computed_gotos -- configured --with(out)-computed-gotos"
+ else
+   ac_cv_computed_gotos=no
+ fi]))
+AC_MSG_RESULT($ac_cv_computed_gotos)
+case "$ac_cv_computed_gotos" in yes*)
+  AC_DEFINE(HAVE_COMPUTED_GOTOS, 1,
+  [Define if the C compiler supports computed gotos.])
+esac
+
 case $ac_sys_system in
 AIX*)   
   AC_DEFINE(HAVE_BROKEN_PIPE_BUF, 1, [Define if the system reports an invalid PIPE_BUF value.]) ;;

-- 
Repository URL: http://hg.python.org/cpython