--- gcc/common.opt.jj	2022-06-27 11:18:02.050066582 +0200
+++ gcc/common.opt	2022-08-16 14:51:04.611673800 +0200
@@ -3601,6 +3601,10 @@ static-libphobos
 Driver
 ; Documented for D, but always accepted by driver.
 
+static-libquadmath
+Driver
+; Documented for Fortran, but always accepted by driver.
+
 static-libstdc++
 Driver
 
--- gcc/gcc.cc.jj	2022-08-11 09:57:24.765334380 +0200
+++ gcc/gcc.cc	2022-08-16 14:57:54.708327024 +0200
@@ -4585,12 +4585,14 @@ driver_handle_option (struct gcc_options
     case OPT_static_libgcc:
     case OPT_shared_libgcc:
     case OPT_static_libgfortran:
+    case OPT_static_libquadmath:
     case OPT_static_libphobos:
     case OPT_static_libstdc__:
       /* These are always valid, since gcc.cc itself understands the
 	 first two, gfortranspec.cc understands -static-libgfortran,
-	 d-spec.cc understands -static-libphobos, and g++spec.cc
-	 understands -static-libstdc++ */
+	 d-spec.cc understands -static-libphobos, g++spec.cc
+	 understands -static-libstdc++ and libgfortran.spec handles
+	 -static-libquadmath.  */
       validated = true;
       break;
 
--- gcc/config/darwin.h.jj	2022-08-16 14:51:14.529544492 +0200
+++ gcc/config/darwin.h	2022-08-16 14:53:54.402460097 +0200
@@ -443,6 +443,7 @@ extern GTY(()) int darwin_ms_struct;
                      %:replace-outfile(-lobjc libobjc-gnu.a%s); \
                     :%:replace-outfile(-lobjc -lobjc-gnu )}}\
    %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
+   %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lquadmath libquadmath.a%s)}\
    %{static|static-libgcc|static-libphobos:%:replace-outfile(-lgphobos libgphobos.a%s)}\
    %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
    %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
--- gcc/fortran/lang.opt.jj	2022-02-04 14:36:55.050604670 +0100
+++ gcc/fortran/lang.opt	2022-08-16 14:52:52.459267705 +0200
@@ -863,6 +863,10 @@ static-libgfortran
 Fortran
 Statically link the GNU Fortran helper library (libgfortran).
 
+static-libquadmath
+Fortran
+Statically link the GCC Quad-Precision Math Library (libquadmath).
+
 std=f2003
 Fortran
 Conform to the ISO Fortran 2003 standard.
--- gcc/fortran/options.cc.jj	2022-01-18 11:58:59.568982256 +0100
+++ gcc/fortran/options.cc	2022-08-16 14:56:22.807525218 +0200
@@ -692,6 +692,13 @@ gfc_handle_option (size_t scode, const c
 #endif
       break;
 
+    case OPT_static_libquadmath:
+#ifndef HAVE_LD_STATIC_DYNAMIC
+      gfc_fatal_error ("%<-static-libquadmath%> is not supported in this "
+		       "configuration");
+#endif
+      break;
+
     case OPT_fintrinsic_modules_path:
     case OPT_fintrinsic_modules_path_:
 
--- gcc/fortran/invoke.texi.jj	2022-05-09 09:09:20.312473272 +0200
+++ gcc/fortran/invoke.texi	2022-08-16 16:12:47.638203577 +0200
@@ -170,7 +170,7 @@ and warnings}.
 
 @item Link Options
 @xref{Link Options,,Options for influencing the linking step}.
-@gccoptlist{-static-libgfortran}
+@gccoptlist{-static-libgfortran  -static-libquadmath}
 
 @item Runtime Options
 @xref{Runtime Options,,Options for influencing runtime behavior}.
@@ -1425,6 +1425,20 @@ configured, this option has no effect.
 @end table
 
 
+@table @gcctabopt
+@item -static-libquadmath
+@opindex @code{static-libquadmath}
+On systems that provide @file{libquadmath} as a shared and a static
+library, this option forces the use of the static version. If no
+shared version of @file{libquadmath} was built when the compiler was
+configured, this option has no effect.
+
+Please note that the @file{libquadmath} runtime library is licensed under the
+GNU Lesser General Public License (LGPL), and linking it statically introduces
+requirements on redistributing the resulting binaries.
+@end table
+
+
 @node Runtime Options
 @section Influencing runtime behavior
 @cindex options, runtime
--- libgfortran/acinclude.m4.jj	2022-06-29 17:05:45.478790781 +0200
+++ libgfortran/acinclude.m4	2022-08-16 16:06:50.047814043 +0200
@@ -356,18 +356,39 @@ AC_DEFUN([LIBGFOR_CHECK_FLOAT128], [
       ac_[]_AC_LANG_ABBREV[]_werror_flag=$ac_xsave_[]_AC_LANG_ABBREV[]_werror_flag
     ])
 
+    dnl Determine -Bstatic ... -Bdynamic etc. support from gfortran -### stderr.
+    touch conftest1.$ac_objext conftest2.$ac_objext
+    LQUADMATH=-lquadmath
+    $FC -static-libgfortran -### -o conftest \
+	conftest1.$ac_objext -lgfortran conftest2.$ac_objext 2>&1 >/dev/null \
+	| grep "conftest1.$ac_objext.*conftest2.$ac_objext" > conftest.cmd
+    if grep "conftest1.$ac_objext.* -Bstatic -lgfortran -Bdynamic .*conftest2.$ac_objext" \
+       conftest.cmd >/dev/null 2>&1; then
+      LQUADMATH="%{static-libquadmath:-Bstatic} -lquadmath %{static-libquadmath:-Bdynamic}"
+    elif grep "conftest1.$ac_objext.* -bstatic -lgfortran -bdynamic .*conftest2.$ac_objext" \
+         conftest.cmd >/dev/null 2>&1; then
+      LQUADMATH="%{static-libquadmath:-bstatic} -lquadmath %{static-libquadmath:-bdynamic}"
+    elif grep "conftest1.$ac_objext.* -aarchive_shared -lgfortran -adefault .*conftest2.$ac_objext" \
+         conftest.cmd >/dev/null 2>&1; then
+      LQUADMATH="%{static-libquadmath:-aarchive_shared} -lquadmath %{static-libquadmath:-adefault}"
+    elif grep "conftest1.$ac_objext.* ligfortran.a .*conftest2.$ac_objext" \
+         conftest.cmd >/dev/null 2>&1; then
+      LQUADMATH="%{static-libquadmath:libquadmath.a%s;:-lquadmath}"
+    fi
+    rm -f conftest1.$ac_objext conftest2.$ac_objext conftest conftest.cmd
+
     dnl For static libgfortran linkage, depend on libquadmath only if needed.
     dnl If using *f128 APIs from libc/libm, depend on libquadmath only if needed
     dnl even for dynamic libgfortran linkage, and don't link libgfortran against
     dnl -lquadmath.
     if test "x$libgfor_cv_have_as_needed" = xyes; then
       if test "x$USE_IEC_60559" = xyes; then
-	LIBQUADSPEC="$libgfor_cv_as_needed_option -lquadmath $libgfor_cv_no_as_needed_option"
+	LIBQUADSPEC="$libgfor_cv_as_needed_option $LQUADMATH $libgfor_cv_no_as_needed_option"
       else
-	LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option} -lquadmath %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
+	LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option} $LQUADMATH %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
       fi
     else
-      LIBQUADSPEC="-lquadmath"
+      LIBQUADSPEC="$LQUADMATH"
     fi
     if test "x$USE_IEC_60559" != xyes; then
       if test -f ../libquadmath/libquadmath.la; then
--- libgfortran/configure.jj	2022-06-29 17:05:45.483790716 +0200
+++ libgfortran/configure	2022-08-16 16:06:54.119761574 +0200
@@ -30323,14 +30323,34 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgfor_cv_have_as_needed" >&5
 $as_echo "$libgfor_cv_have_as_needed" >&6; }
 
+        touch conftest1.$ac_objext conftest2.$ac_objext
+    LQUADMATH=-lquadmath
+    $FC -static-libgfortran -### -o conftest \
+	conftest1.$ac_objext -lgfortran conftest2.$ac_objext 2>&1 >/dev/null \
+	| grep "conftest1.$ac_objext.*conftest2.$ac_objext" > conftest.cmd
+    if grep "conftest1.$ac_objext.* -Bstatic -lgfortran -Bdynamic .*conftest2.$ac_objext" \
+       conftest.cmd >/dev/null 2>&1; then
+      LQUADMATH="%{static-libquadmath:-Bstatic} -lquadmath %{static-libquadmath:-Bdynamic}"
+    elif grep "conftest1.$ac_objext.* -bstatic -lgfortran -bdynamic .*conftest2.$ac_objext" \
+         conftest.cmd >/dev/null 2>&1; then
+      LQUADMATH="%{static-libquadmath:-bstatic} -lquadmath %{static-libquadmath:-bdynamic}"
+    elif grep "conftest1.$ac_objext.* -aarchive_shared -lgfortran -adefault .*conftest2.$ac_objext" \
+         conftest.cmd >/dev/null 2>&1; then
+      LQUADMATH="%{static-libquadmath:-aarchive_shared} -lquadmath %{static-libquadmath:-adefault}"
+    elif grep "conftest1.$ac_objext.* ligfortran.a .*conftest2.$ac_objext" \
+         conftest.cmd >/dev/null 2>&1; then
+      LQUADMATH="%{static-libquadmath:libquadmath.a%s;:-lquadmath}"
+    fi
+    rm -f conftest1.$ac_objext conftest2.$ac_objext conftest conftest.cmd
+
                     if test "x$libgfor_cv_have_as_needed" = xyes; then
       if test "x$USE_IEC_60559" = xyes; then
-	LIBQUADSPEC="$libgfor_cv_as_needed_option -lquadmath $libgfor_cv_no_as_needed_option"
+	LIBQUADSPEC="$libgfor_cv_as_needed_option $LQUADMATH $libgfor_cv_no_as_needed_option"
       else
-	LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option} -lquadmath %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
+	LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option} $LQUADMATH %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
       fi
     else
-      LIBQUADSPEC="-lquadmath"
+      LIBQUADSPEC="$LQUADMATH"
     fi
     if test "x$USE_IEC_60559" != xyes; then
       if test -f ../libquadmath/libquadmath.la; then
