[gcc r12-7610] libphobos: Enable on Solaris/SPARC or with /bin/as [PR 103528]

[Rainer Orth <ro@gcc.gnu.org>]

https://gcc.gnu.org/g:1375e2b62332351a8f9c928421cd1ea8b53c5127

commit r12-7610-g1375e2b62332351a8f9c928421cd1ea8b53c5127
Author: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Date:   Fri Mar 11 09:37:44 2022 +0100

    libphobos: Enable on Solaris/SPARC or with /bin/as [PR 103528]
    
    libphobos is currently only enabled on Solaris/x86 with gas.  As
    discovered when gdc was switched to the dmd frontend, this initially
    broke bootstrap for the other Solaris configurations.
    
    However, it's now well possible to enable it both for Solaris/x86 with
    as and Solaris/SPARC (both as and gas) since the original problems (x86
    as linelength limit, among others) are long gone.
    
    The following patch does just that.
    
    Tested on i386-pc-solaris2.11 and sparc-sun-solaris2.11 (both as and
    gas) with gdc 9.3.0 (x86) resp. 9.4.0 (sparc, configured with
    --enable-libphobos) as bootstrap compilers.
    
    2021-12-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
    
            libphobos:
            PR d/103528
            * configure.ac <x86_64-*-solaris2.* | i?86-*-solaris2.*>: Remove
            gas requirement.
            * configure: Regenerate.
            * configure.tgt (sparc*-*-solaris2.11*): Mark supported.

Diff:
---
 libphobos/configure     | 12 ------------
 libphobos/configure.ac  | 12 ------------
 libphobos/configure.tgt |  3 +++
 3 files changed, 3 insertions(+), 24 deletions(-)

diff --git a/libphobos/configure b/libphobos/configure
index 17b26565505..9da06f087d0 100755
--- a/libphobos/configure
+++ b/libphobos/configure
@@ -15475,18 +15475,6 @@ $as_echo_n "checking for host support for libphobos... " >&6; }
 . ${srcdir}/configure.tgt
 case ${host} in
   x86_64-*-solaris2.* | i?86-*-solaris2.*)
-    # libphobos doesn't compile with the Solaris/x86 assembler due to a
-    # relatively low linelength limit.
-    as_prog=`$CC -print-prog-name=as`
-    if test -n "$as_prog" && $as_prog -v /dev/null 2>&1 | grep GNU > /dev/null 2>&1; then
-      druntime_cv_use_gas=yes;
-    else
-      druntime_cv_use_gas=no;
-    fi
-    rm -f a.out
-    if test x$druntime_cv_use_gas = xno; then
-      LIBPHOBOS_SUPPORTED=no
-    fi
     # 64-bit D execution fails with Solaris ld without -z relax=transtls support.
     if test "$druntime_ld_gld" = "no" && test "$druntime_ld_relax_transtls" = "no"; then
       LIBPHOBOS_SUPPORTED=no
diff --git a/libphobos/configure.ac b/libphobos/configure.ac
index 47e2fa9a6f5..31209ba2920 100644
--- a/libphobos/configure.ac
+++ b/libphobos/configure.ac
@@ -189,18 +189,6 @@ AC_MSG_CHECKING([for host support for libphobos])
 . ${srcdir}/configure.tgt
 case ${host} in
   x86_64-*-solaris2.* | i?86-*-solaris2.*)
-    # libphobos doesn't compile with the Solaris/x86 assembler due to a
-    # relatively low linelength limit.
-    as_prog=`$CC -print-prog-name=as`
-    if test -n "$as_prog" && $as_prog -v /dev/null 2>&1 | grep GNU > /dev/null 2>&1; then
-      druntime_cv_use_gas=yes;
-    else
-      druntime_cv_use_gas=no;
-    fi
-    rm -f a.out
-    if test x$druntime_cv_use_gas = xno; then
-      LIBPHOBOS_SUPPORTED=no
-    fi
     # 64-bit D execution fails with Solaris ld without -z relax=transtls support.
     if test "$druntime_ld_gld" = "no" && test "$druntime_ld_relax_transtls" = "no"; then
       LIBPHOBOS_SUPPORTED=no
diff --git a/libphobos/configure.tgt b/libphobos/configure.tgt
index 6ffca3446c0..0063dd23249 100644
--- a/libphobos/configure.tgt
+++ b/libphobos/configure.tgt
@@ -52,6 +52,9 @@ case "${target}" in
   s390*-linux*)
 	LIBPHOBOS_SUPPORTED=yes
 	;;
+  sparc*-*-solaris2.11*)
+	LIBPHOBOS_SUPPORTED=yes
+	;;
   x86_64-*-freebsd* | i?86-*-freebsd*)
 	LIBPHOBOS_SUPPORTED=yes
 	;;