PR29348, BFD_VMA_FMT wrong

There is a problem with my commit 0e3c1eebb2, which replaced
bfd_uint64_t with uint64_t: Some hosts typedef int64_t to long long
even when long is the same size as long long.  That confuses the code
choosing one of "l", "ll", or "I64" for BFD_VMA_FMT, and results in
warnings.

Write a direct configure test for the printf int64_t style instead.
This removes the last use of BFD_HOST_64BIT_LONG, so delete that.
Note that the changes to configure.com are pure guesswork.

	PR 29348
	* bfd-in.h (BFD_HOST_64BIT_LONG): Don't define.
	(BFD_VMA_FMT): Define using BFD_INT64_FMT when 64-bit.
	(bfd_vma, bfd_signed_vma): Move comments to 64-bit typedefs.
	* configure.ac (BFD_HOST_64BIT_LONG): Delete.
	(BFD_INT64_FMT): New config test.
	* configure.com: Update similarly.
	* Makefile.in: Regenerate.
	* bfd-in2.h: Regenerate.
	* configure: Regenerate.

1 files changed, 34 insertions, 8 deletions

diff --git a/bfd/configure b/bfd/configure
index 590986e..35e0b78 100755
--- a/bfd/configure
+++ b/bfd/configure
@@ -652,11 +652,11 @@ TDEFINES
 SHARED_LIBADD
 SHARED_LDFLAGS
 LIBM
+BFD_INT64_FMT
 zlibinc
 zlibdir
 EXEEXT_FOR_BUILD
 CC_FOR_BUILD
-BFD_HOST_64BIT_LONG
 HDEFINES
 MSGMERGE
 MSGFMT
@@ -12841,13 +12841,6 @@ if test "x${ac_cv_sizeof_void_p}" = "x8"; then
   host64=true
 fi
 
-BFD_HOST_64BIT_LONG=0
-if test "x${ac_cv_sizeof_long}" = "x8"; then
-  BFD_HOST_64BIT_LONG=1
-fi
-
-
-
 # Put a plausible default for CC_FOR_BUILD in Makefile.
 if test -z "$CC_FOR_BUILD"; then
   if test "x$cross_compiling" = "xno"; then
@@ -13041,6 +13034,39 @@ $as_echo "#define HAVE_HIDDEN 1" >>confdefs.h
 
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking printf int64_t format" >&5
+$as_echo_n "checking printf int64_t format... " >&6; }
+if ${bfd_cv_int64_fmt+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  for style in I64 ll l; do
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+       #define __STDC_FORMAT_MACROS 1
+       #include <stdio.h>
+       #include <inttypes.h>
+       extern char PRId64_probe[sizeof PRId64 == sizeof "${style}d" ? 1 : -1];
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  bfd_cv_int64_fmt=${style}
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  done
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $bfd_cv_int64_fmt" >&5
+$as_echo "$bfd_cv_int64_fmt" >&6; }
+BFD_INT64_FMT=\"$bfd_cv_int64_fmt\"
+
+
 # Check if linker supports --as-needed and --no-as-needed options
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker --as-needed support" >&5
 $as_echo_n "checking linker --as-needed support... " >&6; }