diff --git a/docs/gtk/install.txt b/docs/gtk/install.txt
index 8ab7547690..5d63513cea 100644
--- a/docs/gtk/install.txt
+++ b/docs/gtk/install.txt
@@ -154,7 +154,7 @@ to Andrea Venturoli <a.ventu@flashnet.it> and patches to
 the wxWindows mailing list.
 
 You'll need OS/2 Warp (4.00FP#6), X-Free86/2 (3.3.3 or newer), 
-GTK+ (1.2.1 or newer), emx (0.9d fix 1), flex (2.5.4), yacc (1.8), 
+GTK+ (1.2.5 or newer), emx (0.9d fix 1), flex (2.5.4), yacc (1.8), 
 korn shell (5.2.13), Autoconf (2.13),  GNU file utilities (3.6), 
 GNU text utilities (1.3), GNU shell utilites (1.12), m4 (1.4), 
 sed (2.05), grep (2.0), Awk (3.0.3), GNU Make (3.76.1).
@@ -169,10 +169,20 @@ SET COMSPEC=sh
 
 Notice you can choose whatever you want, if you don't like OS2X.
 
-After running configure, you'll have to apply to modifications manually
-to the created Makefile:
-- Replace all ":" with ";" in the VPATH variable
-- Replace "ley.yy.c" with "lexyy.c"
+Now, run autoconf in the main directory and in the samples, demos
+and utils subdirectory. This will generate the OS/2 specific
+versions of the configure scripts. Now run
+    configure --with-gtk
+as described above.
+
+If you have pthreads library installed, but have a gtk version
+which does not yet support threading, you need to explicitly
+diable threading by using the option --disable-threads.
+
+Note that configure assumes your flex will generate files named
+"lexyy.c", not "lex.yy.c". If you have a version which does
+generate "lex.yy.c", you need to manually change the generated
+makefile.
 
 * Building wxGTK on SGI
 --------------------------
diff --git a/docs/motif2/install.txt b/docs/motif2/install.txt
index dda2ab9444..43150cd5e7 100644
--- a/docs/motif2/install.txt
+++ b/docs/motif2/install.txt
@@ -136,6 +136,49 @@ exit
 NB: DO NOT COMPILE WXGTK WITH GCC AND THREADS, SINCE ALL PROGRAMS WILL CRASH UPON 
 START-UP! Just always use egcs and be happy.
 
+* Building wxGTK on OS/2
+--------------------------
+
+Please send comments and question about the OS/2 installation
+to Andrea Venturoli <a.ventu@flashnet.it> and patches to
+the wxWindows mailing list.
+
+You'll need OS/2 Warp (4.00FP#6), X-Free86/2 (3.3.3 or newer), 
+Lesstif (0.89.1 or newer), emx (0.9d fix 1), flex (2.5.4),
+yacc (1.8), unix like shell, e.g. korn shell (5.2.13),
+Autoconf (2.13),  GNU file utilities (3.6),
+GNU text utilities (1.3), GNU shell utilites (1.12), m4 (1.4), 
+sed (2.05), grep (2.0), Awk (3.0.3), GNU Make (3.76.1).
+
+Open an OS/2 prompt and switch to the directory above.
+First set some global environment variables we need:
+
+SET CXXFLAGS=-Zmtd -D__ST_MT_ERRNO__
+SET CFLAGS=-Zmtd -D__ST_MT_ERRNO__
+SET OSTYPE=OS2X              
+SET COMSPEC=sh
+
+Notice you can choose whatever you want, if you don't like OS2X.
+
+Now, run autoconf in the main directory and in the samples, demos
+and utils subdirectory. This will generate the OS/2 specific
+versions of the configure scripts. Now run
+    configure --with-motif
+as described above.
+
+To verify Lesstif installation, configure will try to compile a
+sample program that requires X headers/libraries to be either
+available via C_INCLUDE_PATH and LIBRARY_PATH or you need to
+explicitly set CFLAGS prior to running configure.
+
+If you have pthreads library installed, it will be autodetected
+and the library will be compiled with thread-support.
+
+Note that configure assumes your flex will generate files named
+"lexyy.c", not "lex.yy.c". If you have a version which does
+generate "lex.yy.c", you need to manually change the generated
+makefile.
+
 * Building wxMotif on SGI
 --------------------------