Configure changes to enable cross compiling.

From-SVN: r49378

1 files changed, 187 insertions, 145 deletions

diff --git a/libffi/configure b/libffi/configure
index f367f2e..4789f85 100755
--- a/libffi/configure
+++ b/libffi/configure
@@ -2979,33 +2979,33 @@ echo "configure:2979: checking size of short" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_short'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test "$cross_compiling" = yes; then
-    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
-else
+  for ac_size in 4 8 1 2 16 12  ; do # List sizes in rough order of prevalence.
   cat > conftest.$ac_ext <<EOF
-#line 2987 "configure"
+#line 2985 "configure"
 #include "confdefs.h"
-#include <stdio.h>
-main()
-{
-  FILE *f=fopen("conftestval", "w");
-  if (!f) exit(1);
-  fprintf(f, "%d\n", sizeof(short));
-  exit(0);
-}
+#include "confdefs.h"
+#include <sys/types.h>
+
+
+int main() {
+switch (0) case 0: case (sizeof (short) == $ac_size):;
+; return 0; }
 EOF
-if { (eval echo configure:2998: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
-then
-  ac_cv_sizeof_short=`cat conftestval`
+if { (eval echo configure:2995: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_sizeof_short=$ac_size
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
-  rm -fr conftest*
-  ac_cv_sizeof_short=0
 fi
-rm -fr conftest*
+rm -f conftest*
+  if test x$ac_cv_sizeof_short != x ; then break; fi
+done
+
 fi
 
+if test x$ac_cv_sizeof_short = x ; then
+  { echo "configure: error: cannot determine a size for short" 1>&2; exit 1; }
 fi
 echo "$ac_t""$ac_cv_sizeof_short" 1>&6
 cat >> confdefs.h <<EOF
@@ -3018,33 +3018,33 @@ echo "configure:3018: checking size of int" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_int'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test "$cross_compiling" = yes; then
-    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
-else
+  for ac_size in 4 8 1 2 16 12  ; do # List sizes in rough order of prevalence.
   cat > conftest.$ac_ext <<EOF
-#line 3026 "configure"
+#line 3024 "configure"
 #include "confdefs.h"
-#include <stdio.h>
-main()
-{
-  FILE *f=fopen("conftestval", "w");
-  if (!f) exit(1);
-  fprintf(f, "%d\n", sizeof(int));
-  exit(0);
-}
+#include "confdefs.h"
+#include <sys/types.h>
+
+
+int main() {
+switch (0) case 0: case (sizeof (int) == $ac_size):;
+; return 0; }
 EOF
-if { (eval echo configure:3037: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
-then
-  ac_cv_sizeof_int=`cat conftestval`
+if { (eval echo configure:3034: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_sizeof_int=$ac_size
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
-  rm -fr conftest*
-  ac_cv_sizeof_int=0
 fi
-rm -fr conftest*
+rm -f conftest*
+  if test x$ac_cv_sizeof_int != x ; then break; fi
+done
+
 fi
 
+if test x$ac_cv_sizeof_int = x ; then
+  { echo "configure: error: cannot determine a size for int" 1>&2; exit 1; }
 fi
 echo "$ac_t""$ac_cv_sizeof_int" 1>&6
 cat >> confdefs.h <<EOF
@@ -3057,33 +3057,33 @@ echo "configure:3057: checking size of long" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_long'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test "$cross_compiling" = yes; then
-    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
-else
+  for ac_size in 4 8 1 2 16 12  ; do # List sizes in rough order of prevalence.
   cat > conftest.$ac_ext <<EOF
-#line 3065 "configure"
+#line 3063 "configure"
 #include "confdefs.h"
-#include <stdio.h>
-main()
-{
-  FILE *f=fopen("conftestval", "w");
-  if (!f) exit(1);
-  fprintf(f, "%d\n", sizeof(long));
-  exit(0);
-}
+#include "confdefs.h"
+#include <sys/types.h>
+
+
+int main() {
+switch (0) case 0: case (sizeof (long) == $ac_size):;
+; return 0; }
 EOF
-if { (eval echo configure:3076: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
-then
-  ac_cv_sizeof_long=`cat conftestval`
+if { (eval echo configure:3073: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_sizeof_long=$ac_size
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
-  rm -fr conftest*
-  ac_cv_sizeof_long=0
 fi
-rm -fr conftest*
+rm -f conftest*
+  if test x$ac_cv_sizeof_long != x ; then break; fi
+done
+
 fi
 
+if test x$ac_cv_sizeof_long = x ; then
+  { echo "configure: error: cannot determine a size for long" 1>&2; exit 1; }
 fi
 echo "$ac_t""$ac_cv_sizeof_long" 1>&6
 cat >> confdefs.h <<EOF
@@ -3096,33 +3096,33 @@ echo "configure:3096: checking size of long long" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_long_long'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test "$cross_compiling" = yes; then
-    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
-else
+  for ac_size in 4 8 1 2 16 12  ; do # List sizes in rough order of prevalence.
   cat > conftest.$ac_ext <<EOF
-#line 3104 "configure"
+#line 3102 "configure"
 #include "confdefs.h"
-#include <stdio.h>
-main()
-{
-  FILE *f=fopen("conftestval", "w");
-  if (!f) exit(1);
-  fprintf(f, "%d\n", sizeof(long long));
-  exit(0);
-}
+#include "confdefs.h"
+#include <sys/types.h>
+
+
+int main() {
+switch (0) case 0: case (sizeof (long long) == $ac_size):;
+; return 0; }
 EOF
-if { (eval echo configure:3115: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
-then
-  ac_cv_sizeof_long_long=`cat conftestval`
+if { (eval echo configure:3112: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_sizeof_long_long=$ac_size
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
-  rm -fr conftest*
-  ac_cv_sizeof_long_long=0
 fi
-rm -fr conftest*
+rm -f conftest*
+  if test x$ac_cv_sizeof_long_long != x ; then break; fi
+done
+
 fi
 
+if test x$ac_cv_sizeof_long_long = x ; then
+  { echo "configure: error: cannot determine a size for long long" 1>&2; exit 1; }
 fi
 echo "$ac_t""$ac_cv_sizeof_long_long" 1>&6
 cat >> confdefs.h <<EOF
@@ -3135,33 +3135,33 @@ echo "configure:3135: checking size of float" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_float'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test "$cross_compiling" = yes; then
-    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
-else
+  for ac_size in 4 8 1 2 16 12  ; do # List sizes in rough order of prevalence.
   cat > conftest.$ac_ext <<EOF
-#line 3143 "configure"
+#line 3141 "configure"
 #include "confdefs.h"
-#include <stdio.h>
-main()
-{
-  FILE *f=fopen("conftestval", "w");
-  if (!f) exit(1);
-  fprintf(f, "%d\n", sizeof(float));
-  exit(0);
-}
+#include "confdefs.h"
+#include <sys/types.h>
+
+
+int main() {
+switch (0) case 0: case (sizeof (float) == $ac_size):;
+; return 0; }
 EOF
-if { (eval echo configure:3154: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
-then
-  ac_cv_sizeof_float=`cat conftestval`
+if { (eval echo configure:3151: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_sizeof_float=$ac_size
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
-  rm -fr conftest*
-  ac_cv_sizeof_float=0
 fi
-rm -fr conftest*
+rm -f conftest*
+  if test x$ac_cv_sizeof_float != x ; then break; fi
+done
+
 fi
 
+if test x$ac_cv_sizeof_float = x ; then
+  { echo "configure: error: cannot determine a size for float" 1>&2; exit 1; }
 fi
 echo "$ac_t""$ac_cv_sizeof_float" 1>&6
 cat >> confdefs.h <<EOF
@@ -3174,33 +3174,33 @@ echo "configure:3174: checking size of double" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test "$cross_compiling" = yes; then
-    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
-else
+  for ac_size in 4 8 1 2 16 12  ; do # List sizes in rough order of prevalence.
   cat > conftest.$ac_ext <<EOF
-#line 3182 "configure"
+#line 3180 "configure"
 #include "confdefs.h"
-#include <stdio.h>
-main()
-{
-  FILE *f=fopen("conftestval", "w");
-  if (!f) exit(1);
-  fprintf(f, "%d\n", sizeof(double));
-  exit(0);
-}
+#include "confdefs.h"
+#include <sys/types.h>
+
+
+int main() {
+switch (0) case 0: case (sizeof (double) == $ac_size):;
+; return 0; }
 EOF
-if { (eval echo configure:3193: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
-then
-  ac_cv_sizeof_double=`cat conftestval`
+if { (eval echo configure:3190: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_sizeof_double=$ac_size
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
-  rm -fr conftest*
-  ac_cv_sizeof_double=0
 fi
-rm -fr conftest*
+rm -f conftest*
+  if test x$ac_cv_sizeof_double != x ; then break; fi
+done
+
 fi
 
+if test x$ac_cv_sizeof_double = x ; then
+  { echo "configure: error: cannot determine a size for double" 1>&2; exit 1; }
 fi
 echo "$ac_t""$ac_cv_sizeof_double" 1>&6
 cat >> confdefs.h <<EOF
@@ -3213,33 +3213,33 @@ echo "configure:3213: checking size of long double" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_long_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test "$cross_compiling" = yes; then
-    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
-else
+  for ac_size in 4 8 1 2 16 12  ; do # List sizes in rough order of prevalence.
   cat > conftest.$ac_ext <<EOF
-#line 3221 "configure"
+#line 3219 "configure"
 #include "confdefs.h"
-#include <stdio.h>
-main()
-{
-  FILE *f=fopen("conftestval", "w");
-  if (!f) exit(1);
-  fprintf(f, "%d\n", sizeof(long double));
-  exit(0);
-}
+#include "confdefs.h"
+#include <sys/types.h>
+
+
+int main() {
+switch (0) case 0: case (sizeof (long double) == $ac_size):;
+; return 0; }
 EOF
-if { (eval echo configure:3232: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
-then
-  ac_cv_sizeof_long_double=`cat conftestval`
+if { (eval echo configure:3229: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_sizeof_long_double=$ac_size
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
-  rm -fr conftest*
-  ac_cv_sizeof_long_double=0
 fi
-rm -fr conftest*
+rm -f conftest*
+  if test x$ac_cv_sizeof_long_double != x ; then break; fi
+done
+
 fi
 
+if test x$ac_cv_sizeof_long_double = x ; then
+  { echo "configure: error: cannot determine a size for long double" 1>&2; exit 1; }
 fi
 echo "$ac_t""$ac_cv_sizeof_long_double" 1>&6
 cat >> confdefs.h <<EOF
@@ -3253,33 +3253,33 @@ echo "configure:3253: checking size of void *" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_void_p'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test "$cross_compiling" = yes; then
-    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
-else
+  for ac_size in 4 8 1 2 16 12  ; do # List sizes in rough order of prevalence.
   cat > conftest.$ac_ext <<EOF
-#line 3261 "configure"
+#line 3259 "configure"
 #include "confdefs.h"
-#include <stdio.h>
-main()
-{
-  FILE *f=fopen("conftestval", "w");
-  if (!f) exit(1);
-  fprintf(f, "%d\n", sizeof(void *));
-  exit(0);
-}
+#include "confdefs.h"
+#include <sys/types.h>
+
+
+int main() {
+switch (0) case 0: case (sizeof (void *) == $ac_size):;
+; return 0; }
 EOF
-if { (eval echo configure:3272: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
-then
-  ac_cv_sizeof_void_p=`cat conftestval`
+if { (eval echo configure:3269: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_sizeof_void_p=$ac_size
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
-  rm -fr conftest*
-  ac_cv_sizeof_void_p=0
 fi
-rm -fr conftest*
+rm -f conftest*
+  if test x$ac_cv_sizeof_void_p != x ; then break; fi
+done
+
 fi
 
+if test x$ac_cv_sizeof_void_p = x ; then
+  { echo "configure: error: cannot determine a size for void *" 1>&2; exit 1; }
 fi
 echo "$ac_t""$ac_cv_sizeof_void_p" 1>&6
 cat >> confdefs.h <<EOF
@@ -3338,7 +3338,7 @@ fi
 rm -f conftest*
 if test $ac_cv_c_bigendian = unknown; then
 if test "$cross_compiling" = yes; then
-    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
+   echo $ac_n "cross-compiling... " 2>&6 
 else
   cat > conftest.$ac_ext <<EOF
 #line 3345 "configure"
@@ -3370,11 +3370,53 @@ fi
 fi
 
 echo "$ac_t""$ac_cv_c_bigendian" 1>&6
+if test $ac_cv_c_bigendian = unknown; then
+echo $ac_n "checking to probe for byte ordering""... $ac_c" 1>&6
+echo "configure:3376: checking to probe for byte ordering" >&5
+
+cat >conftest.c <<EOF
+short ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+short ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+void _ascii() { char* s = (char*) ascii_mm; s = (char*) ascii_ii; }
+short ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+short ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+void _ebcdic() { char* s = (char*) ebcdic_mm; s = (char*) ebcdic_ii; }
+int main() { _ascii (); _ebcdic (); return 0; }
+EOF
+ if test -f conftest.c ; then
+     if ${CC-cc} ${CFLAGS} conftest.c -o conftest.o && test -f conftest.o ; then
+        if test `grep -l BIGenDianSyS conftest.o` ; then
+           echo $ac_n ' big endian probe OK, ' 1>&6
+           ac_cv_c_bigendian=yes
+        fi
+        if test `grep -l LiTTleEnDian conftest.o` ; then
+           echo $ac_n ' little endian probe OK, ' 1>&6
+           if test $ac_cv_c_bigendian = yes ; then
+            ac_cv_c_bigendian=unknown;
+           else
+            ac_cv_c_bigendian=no
+           fi
+        fi
+        echo $ac_n 'guessing bigendian ...  ' >&6
+     fi
+  fi
+echo "$ac_t""$ac_cv_c_bigendian" 1>&6
+fi
 if test $ac_cv_c_bigendian = yes; then
   cat >> confdefs.h <<\EOF
 #define WORDS_BIGENDIAN 1
 EOF
 
+  BYTEORDER=4321
+else
+  BYTEORDER=1234
+fi
+cat >> confdefs.h <<EOF
+#define BYTEORDER $BYTEORDER
+EOF
+
+if test $ac_cv_c_bigendian = unknown; then
+  { echo "configure: error: unknown endianess - sorry" 1>&2; exit 1; }
 fi