--- gcc/libgcc/Makefile.in.org	2010-04-29 23:43:30.179106889 +0200
+++ gcc/libgcc/Makefile.in	2010-04-29 23:43:41.993233119 +0200
@@ -64,7 +64,7 @@
 AR = @AR@
 AR_FLAGS = rc
 
-CC = @CC@
+override CC = @CC@
 CFLAGS = @CFLAGS@
 RANLIB = @RANLIB@
 LN_S = @LN_S@
--- gcc-9.5.0/libgcc/configure.orig	2023-04-15 23:24:15.271132715 +0200
+++ gcc-9.5.0/libgcc/configure	2023-04-16 07:36:39.584410765 +0200
@@ -3208,6 +3208,7 @@ if test -n "$ac_tool_prefix"; then
 set dummy ${ac_tool_prefix}gcc; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
+CC="$CC -isystem `pwd`/../../sysroot/i386-mingw32/include -isystem `pwd`/../../sysroot/i386-mingw32/sys-include -B`pwd`/../../sysroot/i386-mingw32/lib/"
 if ${ac_cv_prog_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
--- gcc/libiberty/Makefile.in.org	2010-04-29 23:53:50.429231967 +0200
+++ gcc/libiberty/Makefile.in	2010-04-29 23:54:00.206482863 +0200
@@ -53,7 +53,7 @@
 AR = @AR@
 AR_FLAGS = rc
 
-CC = @CC@
+override CC = @CC@
 CFLAGS = @CFLAGS@
 CPPFLAGS = @CPPFLAGS@
 RANLIB = @RANLIB@
--- gcc-9.5.0/libiberty/configure.orig	2023-04-15 23:24:15.307799183 +0200
+++ gcc-9.5.0/libiberty/configure	2023-04-16 07:37:20.094191305 +0200
@@ -2990,6 +2990,7 @@ if test -n "$ac_tool_prefix"; then
 set dummy ${ac_tool_prefix}gcc; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
+CC="$CC -isystem `pwd`/../../sysroot/i386-mingw32/include -isystem `pwd`/../../sysroot/i386-mingw32/sys-include -B`pwd`/../../sysroot/i386-mingw32/lib/"
 if ${ac_cv_prog_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
--- gcc-9.5.0/libstdc++-v3/Makefile.in.orig	2022-05-27 09:21:13.311391084 +0200
+++ gcc-9.5.0/libstdc++-v3/Makefile.in	2023-04-15 23:24:15.351132282 +0200
@@ -197,7 +197,7 @@ AUTOMAKE = @AUTOMAKE@
 AWK = @AWK@
 BASIC_FILE_CC = @BASIC_FILE_CC@
 BASIC_FILE_H = @BASIC_FILE_H@
-CC = @CC@
+override CC = @CC@
 CCODECVT_CC = @CCODECVT_CC@
 CCOLLATE_CC = @CCOLLATE_CC@
 CCTYPE_CC = @CCTYPE_CC@
@@ -217,7 +217,7 @@ CPU_OPT_EXT_RANDOM = @CPU_OPT_EXT_RANDOM
 CSTDIO_H = @CSTDIO_H@
 CTIME_CC = @CTIME_CC@
 CTIME_H = @CTIME_H@
-CXX = @CXX@
+override CXX = @CXX@
 CXXCPP = @CXXCPP@
 CXXFILT = @CXXFILT@
 CXXFLAGS = @CXXFLAGS@
--- gcc-9.5.0/libstdc++-v3/configure.orig	2022-05-27 09:21:13.335391201 +0200
+++ gcc-9.5.0/libstdc++-v3/configure	2023-04-16 07:38:19.120538198 +0200
@@ -3795,6 +3795,7 @@ fi
 save_CXXFLAGS="$CXXFLAGS"
 CXXFLAGS="$CXXFLAGS -fno-builtin"
 ac_ext=c
+CPP=$CXXCPP
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -3804,6 +3805,8 @@ if test -n "$ac_tool_prefix"; then
 set dummy ${ac_tool_prefix}gcc; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
+CC="$CC -isystem `pwd`/../../sysroot/i386-mingw32/include -isystem `pwd`/../../sysroot/i386-mingw32/sys-include -B`pwd`/../../sysroot/i386-mingw32/lib/"
+CXX="$CXX -isystem `pwd`/../../sysroot/i386-mingw32/include -isystem `pwd`/../../sysroot/i386-mingw32/sys-include -B`pwd`/../../sysroot/i386-mingw32/lib/"
 if ${ac_cv_prog_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else