Re: [power-iee128] libgfortran: Use -mno-gnu-attribute in libgfortran

[Thomas Koenig via Gcc-patches]

Hi Jakub,


On Mon, Jan 03, 2022 at 11:33:32AM +0100, Jakub Jelinek wrote:

The idea behind this is that libstdc++ is written such that it can handle
both IBM extended and IEEE quad long double, so its object files are
compatible with both.


Now tested on powerpc64le-linux (and together with the regenerated file),
ok for power-ieee128?


Since you posted it, I had already tested this and included it into the
patch I pushed a couple of minutes ago.

So, OK, and I already pushed it :-)

Thanks a lot for your help in this!

Best regards

Thomas

[power-iee128] libgfortran: Use -mno-gnu-attribute in libgfortran

[Jakub Jelinek via Gcc-patches]

On Mon, Jan 03, 2022 at 11:33:32AM +0100, Jakub Jelinek wrote:
> The idea behind this is that libstdc++ is written such that it can handle
> both IBM extended and IEEE quad long double, so its object files are
> compatible with both.

Now tested on powerpc64le-linux (and together with the regenerated file),
ok for power-ieee128?

2022-01-03  Jakub Jelinek  

* configure.ac (Use -mno-gnu-attribute together with
-mabi=ibmlongdouble or -mabi=ieeelongdouble.
* configure: Regenerated.

--- libgfortran/configure.ac.jj 2021-12-31 11:08:19.032835533 +
+++ libgfortran/configure.ac2022-01-03 10:32:16.927834682 +
@@ -163,9 +163,9 @@ if test "x$GCC" = "xyes"; then
   #error long double is double
   #endif]],
  [[(void) 0;]])],
-[AM_FCFLAGS="$AM_FCFLAGS -mabi=ibmlongdouble";
-AM_CFLAGS="$AM_CFLAGS -mabi=ibmlongdouble";
-CFLAGS="$CFLAGS -mabi=ibmlongdouble";
+[AM_FCFLAGS="$AM_FCFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
+AM_CFLAGS="$AM_CFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
+CFLAGS="$CFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
 have_real_17=yes])
   ;;
 *)
--- libgfortran/configure.jj2021-12-31 11:08:19.032835533 +
+++ libgfortran/configure   2022-01-03 13:55:38.684926082 +
@@ -6025,9 +6025,9 @@ main ()
 }
 _ACEOF
 if ac_fn_c_try_cpp "$LINENO"; then :
-  AM_FCFLAGS="$AM_FCFLAGS -mabi=ibmlongdouble";
-AM_CFLAGS="$AM_CFLAGS -mabi=ibmlongdouble";
-CFLAGS="$CFLAGS -mabi=ibmlongdouble";
+  AM_FCFLAGS="$AM_FCFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
+AM_CFLAGS="$AM_CFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
+CFLAGS="$CFLAGS -mabi=ibmlongdouble -mno-gnu-attribute";
 have_real_17=yes
 fi
 rm -f conftest.err conftest.i conftest.$ac_ext


Jakub