From eb7a681b829b784348557967a8eaa60259777f8b Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@suse.de>
Date: Tue, 1 Apr 2025 13:19:07 +0200
Subject: [PATCH] powerpc: Remove check for -mabi=ibmlongdouble

The -mabi=ibmlongdouble option has been added in gcc 4.2, thus can be
assumed to always exist.
---
 sysdeps/unix/sysv/linux/powerpc/configure    | 43 +-------------------
 sysdeps/unix/sysv/linux/powerpc/configure.ac | 19 +--------
 2 files changed, 2 insertions(+), 60 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/powerpc/configure b/sysdeps/unix/sysv/linux/powerpc/configure
index 61ae675c1a9..ef2055db92d 100644
--- a/sysdeps/unix/sysv/linux/powerpc/configure
+++ b/sysdeps/unix/sysv/linux/powerpc/configure
@@ -40,48 +40,7 @@ fi
 printf "%s\n" "$libc_cv_mlong_double_128ibm" >&6; }
 
 if test "$libc_cv_mlong_double_128ibm" = no; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC $CFLAGS supports -mabi=ibmlongdouble" >&5
-printf %s "checking whether $CC $CFLAGS supports -mabi=ibmlongdouble... " >&6; }
-if test ${libc_cv_mabi_ibmlongdouble+y}
-then :
-  printf %s "(cached) " >&6
-else case e in #(
-  e)   save_CFLAGS="$CFLAGS"
-  CFLAGS="$CFLAGS -mlong-double-128 -mabi=ibmlongdouble"
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <float.h>
-int
-main (void)
-{
-
-#if LDBL_MANT_DIG != 106
-# error "compiler doesn't implement IBM extended format of long double"
-#endif
-long double foobar (long double x) { return x; }
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"
-then :
-  libc_cv_mabi_ibmlongdouble=yes
-else case e in #(
-  e) libc_cv_mabi_ibmlongdouble=no ;;
-esac
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
-  CFLAGS="$save_CFLAGS" ;;
-esac
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_mabi_ibmlongdouble" >&5
-printf "%s\n" "$libc_cv_mabi_ibmlongdouble" >&6; }
-
-  if test "$libc_cv_mabi_ibmlongdouble" = yes; then
-    CFLAGS="$CFLAGS -mabi=ibmlongdouble"
-  else
-    as_fn_error $? "this configuration requires -mlong-double-128 IBM extended format support" "$LINENO" 5
-  fi
+  CFLAGS="$CFLAGS -mabi=ibmlongdouble"
 fi
 
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for linker that supports --no-tls-get-addr-optimize" >&5
diff --git a/sysdeps/unix/sysv/linux/powerpc/configure.ac b/sysdeps/unix/sysv/linux/powerpc/configure.ac
index 8d2ec60f68a..42347a66fc9 100644
--- a/sysdeps/unix/sysv/linux/powerpc/configure.ac
+++ b/sysdeps/unix/sysv/linux/powerpc/configure.ac
@@ -16,24 +16,7 @@ long double foobar (long double x) { return x; }]])],
 CFLAGS="$save_CFLAGS"])
 
 if test "$libc_cv_mlong_double_128ibm" = no; then
-  AC_CACHE_CHECK(whether $CC $CFLAGS supports -mabi=ibmlongdouble,
-		 libc_cv_mabi_ibmlongdouble, [dnl
-  save_CFLAGS="$CFLAGS"
-  CFLAGS="$CFLAGS -mlong-double-128 -mabi=ibmlongdouble"
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <float.h>]], [[
-#if LDBL_MANT_DIG != 106
-# error "compiler doesn't implement IBM extended format of long double"
-#endif
-long double foobar (long double x) { return x; }]])],
-		 libc_cv_mabi_ibmlongdouble=yes,
-		 libc_cv_mabi_ibmlongdouble=no)
-  CFLAGS="$save_CFLAGS"])
-
-  if test "$libc_cv_mabi_ibmlongdouble" = yes; then
-    CFLAGS="$CFLAGS -mabi=ibmlongdouble"
-  else
-    AC_MSG_ERROR([this configuration requires -mlong-double-128 IBM extended format support])
-  fi
+  CFLAGS="$CFLAGS -mabi=ibmlongdouble"
 fi
 
 LIBC_LINKER_FEATURE([--no-tls-get-addr-optimize], [-Wl,--no-tls-get-addr-optimize],
-- 
2.47.2