diff --git a/README.md b/README.md
index 898aaa09..7a7f4367 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,16 @@ Simple guide to apply the patch:<br>
  - `i686-pc-msdosdjgpp` cross toolchain (`binutils, gcc, dxe3gen`) for DJGPP DXE wrappers
 <br>
 
+**GCC Re-Targeting for DJGPP**<br>
+An old-stable version of GCC was cherry-picked to re-target for DJGPP. There were no specific reason and no customization on GCC sources.
+
+    Target: i686-pc-msdosdjgpp
+    Configured with: ../gcc-7.5.0/configure --prefix=/opt/djgpp --target=i686-pc-msdosdjgpp --enable-languages=c,lto,c++ \
+        --enable-lto --enable-graphite --disable-nls --disable-win32-registry --with-arch=i686 --with-tune=generic
+    Thread model: single
+    gcc version 7.5.0 (GCC)
+<br>
+
     $ cd ~/myqemu/qemu-3dfx/wrappers/3dfx
     $ mkdir build && cd build
     $ bash ../../../scripts/conf_wrapper