diff --git a/INSTALL b/INSTALL
index 242cb06f91..2fa7a81fd9 100644
--- a/INSTALL
+++ b/INSTALL
@@ -467,6 +467,12 @@ build the GNU C Library:
      better code.  As of release time, GCC 9.2.1 is the newest compiler
      verified to work to build the GNU C Library.
 
+     For PowerPC 64-bits little-endian (powerpc64le), a GCC version with
+     support for '-mno-gnu-attribute', '-mabi=ieeelongdouble', and
+     '-mabi=ibmlondouble' is required.  These additional features are
+     required for building the GNU C Library with support for IEEE long
+     double.
+
      For multi-arch support it is recommended to use a GCC which has
      been built with support for GNU indirect functions.  This ensures
      that correct debugging information is generated for functions
diff --git a/NEWS b/NEWS
index f58436c91a..e60f83a947 100644
--- a/NEWS
+++ b/NEWS
@@ -32,7 +32,8 @@ Deprecated and removed features, and other changes affecting compatibility:
 
 Changes to build and runtime requirements:
 
-  [Add changes to build and runtime requirements here]
+* powerpc64le requires GCC 7.4 or newer.  This is required for supporting
+  long double redirects.
 
 Security related changes:
 
diff --git a/manual/install.texi b/manual/install.texi
index 71bf47cac6..34fe75487f 100644
--- a/manual/install.texi
+++ b/manual/install.texi
@@ -507,6 +507,11 @@ the newest version of the compiler that is known to work for building
 release time, GCC 9.2.1 is the newest compiler verified to work to build
 @theglibc{}.
 
+For PowerPC 64-bits little-endian (powerpc64le), a GCC version with support
+for @option{-mno-gnu-attribute}, @option{-mabi=ieeelongdouble}, and
+@option{-mabi=ibmlondouble} is required.  These additional features are
+required for building the GNU C Library with support for IEEE long double.
+
 For multi-arch support it is recommended to use a GCC which has been built with
 support for GNU indirect functions.  This ensures that correct debugging
 information is generated for functions selected by IFUNC resolvers.  This
diff --git a/sysdeps/powerpc/powerpc64/le/configure b/sysdeps/powerpc/powerpc64/le/configure
index bca80cec76..071d881a5a 100644
--- a/sysdeps/powerpc/powerpc64/le/configure
+++ b/sysdeps/powerpc/powerpc64/le/configure
@@ -32,4 +32,63 @@ if test "$libc_cv_target_power8_ok" != "yes"; then :
 fi
 CFLAGS="$OLD_CFLAGS"
 
+OLD_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -mno-gnu-attribute"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the compiler supports -mno-gnu-attribute" >&5
+$as_echo_n "checking if the compiler supports -mno-gnu-attribute... " >&6; }
+if ${libc_cv_no_gnu_attr_ok+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libc_cv_no_gnu_attr_ok=yes
+else
+  libc_cv_no_gnu_attr_ok=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_no_gnu_attr_ok" >&5
+$as_echo "$libc_cv_no_gnu_attr_ok" >&6; }
+if test "$libc_cv_no_gnu_attr_ok" != "yes"; then :
+  critic_missing="$critic_missing A compiler with -mno-gnu-attribute is required on powerpc64le."
+fi
+CFLAGS="$OLD_CFLAGS"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC compiles signbit with 128-bit floating point type" >&5
+$as_echo_n "checking if $CC compiles signbit with 128-bit floating point type... " >&6; }
+if ${libc_cv_compiler_powerpc64le_ice+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -mabi=ieeelongdouble -Wno-psabi"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int sbr (long double a) { return __builtin_signbit (a); }
+int sbm (long double *a) { return __builtin_signbit (*a); }
+int sbo (long double *a) { return __builtin_signbit (a[4]); }
+int sbi (long double *a, unsigned long n) { return __builtin_signbit (a[n]); }
+void sbs (int *p, long double a) { *p = __builtin_signbit (a); }
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libc_cv_compiler_powerpc64le_ice=yes
+else
+  libc_cv_compiler_powerpc64le_ice=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+CFLAGS="$save_CFLAGS"
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_compiler_powerpc64le_ice" >&5
+$as_echo "$libc_cv_compiler_powerpc64le_ice" >&6; }
+if test "$libc_cv_compiler_powerpc64le_ice" != "yes"; then :
+  critic_missing="$critic_missing __builtin_signbit is broken.  GCC 7.4 or newer is required to resolve (PR83862)."
+fi
+
+
 test -n "$critic_missing" && as_fn_error $? "*** $critic_missing" "$LINENO" 5
diff --git a/sysdeps/powerpc/powerpc64/le/configure.ac b/sysdeps/powerpc/powerpc64/le/configure.ac
index 7f2c9fbf1f..6dabd9be6b 100644
--- a/sysdeps/powerpc/powerpc64/le/configure.ac
+++ b/sysdeps/powerpc/powerpc64/le/configure.ac
@@ -17,4 +17,39 @@ AS_IF([test "$libc_cv_target_power8_ok" != "yes"],
       [critic_missing="$critic_missing POWER8 or newer is required on powerpc64le."])
 CFLAGS="$OLD_CFLAGS"
 
+dnl Require support for -mno-gnu-attribute
+OLD_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -mno-gnu-attribute"
+AC_CACHE_CHECK([if the compiler supports -mno-gnu-attribute],
+	       libc_cv_no_gnu_attr_ok, [
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+]])],
+	       [libc_cv_no_gnu_attr_ok=yes],
+	       [libc_cv_no_gnu_attr_ok=no])])
+AS_IF([test "$libc_cv_no_gnu_attr_ok" != "yes"],
+      [critic_missing="$critic_missing A compiler with -mno-gnu-attribute is required on powerpc64le."])
+CFLAGS="$OLD_CFLAGS"
+
+dnl Some old compiler versions give error for the function signbit() for
+dnl 128-bit floating point types.  This is fixed by PR83862 and backported
+dnl to gcc6 and gcc7.  This test is to check if we are using the compiler
+dnl that has this bug (fixed in GCC 8.0, backported to 7.4).
+AC_CACHE_CHECK([if $CC compiles signbit with 128-bit floating point type],
+	       libc_cv_compiler_powerpc64le_ice, [dnl
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -mabi=ieeelongdouble -Wno-psabi"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+int sbr (long double a) { return __builtin_signbit (a); }
+int sbm (long double *a) { return __builtin_signbit (*a); }
+int sbo (long double *a) { return __builtin_signbit (a[4]); }
+int sbi (long double *a, unsigned long n) { return __builtin_signbit (a[n]); }
+void sbs (int *p, long double a) { *p = __builtin_signbit (a); }
+]])],
+		  [libc_cv_compiler_powerpc64le_ice=yes],
+		  [libc_cv_compiler_powerpc64le_ice=no])
+CFLAGS="$save_CFLAGS"])
+AS_IF([test "$libc_cv_compiler_powerpc64le_ice" != "yes"],
+      [critic_missing="$critic_missing __builtin_signbit is broken.  GCC 7.4 or newer is required to resolve (PR83862)."])
+
+
 test -n "$critic_missing" && AC_MSG_ERROR([*** $critic_missing])