Dear Readers, I searched the ruby-talk archives and googled but both left me alone. After I read the README.wince documentation for the build process I installed all the required files. My setup is: - Windows Embedded Visual C++ 4.0 SP4 - DELL Axim X51 ARMV5T XScale CPU - Windows Mobile 5.0 The following batch set the env variables and provide me a command line for the build process. -->8--- set INCLUDE=F:\Programme\Windows CE Tools\wce400\STANDARDSDK\Include\Armv4t set LIB=F:\Programme\Windows CE Tools\wce400\STANDARDSDK\Lib\Armv4t set CE_TOOLS_DIR=F:\Programme\Windows CE Tools\wce400 set EMBEDDED_TOOLS_DIR=C:\Programme\Microsoft eMbedded C++ 4.0\EVC\WCE400\BIN set PATH=%PATH%;%EMBEDDED_TOOLS_DIR%;%CE_TOOLS_DIR%;C:\Programme\Microsoft eMbedded C++ 4.0\Common\EVC\Bin start /D F:\ cmd.exe ----------------------------- I successfully ran configure.bat (without an architecture type as parameter for two reasons: first I don't habe any idea how to look up the target string for my pda like 'arm-hpc-wince', second this parameter seems to be optional) I ran nmake and he complaint following: --->8------- F:\ruby-1.8.4\wince>configure.bat Creating Makefile type `NMAKE' to make ruby for mswince. F:\ruby-1.8.4\wince>nmake Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. Creating fake.rb Creating config.h config.h updated. Creating config.status rbconfig.rb updated cl -nologo -Zi -w -O2b2xg- -G6 -DRUBY_EXPORT -I. -I./.. -I./../missing -I./../wince -I. -I./ .. -I./../missing -I./../wince -DUNDER_CE -D_WIN32_WCE= -DFILENAME_MAX=MAX_PATH -DTLS_OUT_OF_INDE XES=0xFFFFFFFF -DBUFSIZ=512 -D_UNICODE -DUNICODE -c -Tc./../array.c array.c .\config.h(92) : fatal error C1017: invalid integer constant expression NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop. --------------------------- It seems that he stops as the -D variable _WIN32_WCE= is empty. Okay. Opened the makefile in my editor and look up the line. ----->8------- PROCESSOR_ARCHITECTURE = x86 PROCESSOR_LEVEL = 6 # RUBY_SO_NAME = $(RT)-$(RUBY_INSTALL_NAME)$(MAJOR)$(MINOR) # CFLAGS = -nologo $(DEBUGFLAGS) $(OPTFLAGS) $(PROCESSOR_FLAG) CPPFLAGS = -I. -I$(srcdir) -I$(srcdir)/missing -I$(srcdir)/wince \ $(CECPUDEF) -DUNDER_CE -D_WIN32_WCE=$(SUBSYSVERSION:.=) \ -DFILENAME_MAX=MAX_PATH -DTLS_OUT_OF_INDEXES=0xFFFFFFFF \ -DBUFSIZ=512 -D_UNICODE -DUNICODE $(QSH4) ------------------ How does he resolve the SUBSYSVERSION? It shouldn't be empty (I guess). Sorry for the long post, but I hope to demonstrate that I try to figure out the problem. TIA, -- Daniel Vöěkerts Protected by Anti Pesto.