Hi, I had redhat linux2.6.18-164.el5 x86_64 bit machine.I tried to install wine-1.2-rc1 and got the following error: checking for sys/thr.h... no checking for pthread_np.h... no checking for linux/videodev.h... yes checking for linux/capi.h... yes checking for ldd... /usr/bin/ldd checking whether we can build a GNU style ELF dll... yes checking whether the compiler supports -fPIC -shared -Wl,-soname,confest.so.1... yes checking whether the compiler supports -fPIC -shared -Wl,-Bsymbolic,-z,defs... yes checking whether the compiler supports -fPIC -shared -Wl,-Bsymbolic,-init,__wine_spec_init,-fini,__wine_spec_fini... yes checking whether the compiler supports -fPIC -shared -Wl,--version-script=conftest.map... yes checking whether the compiler supports -fPIC -Wl,--export-dynamic... yes checking whether the compiler supports -fPIC -Wl,--rpath,$ORIGIN/../lib... yes checking whether the compiler supports -Wl,--enable-new-dtags... yes checking whether the compiler supports -Wl,--section-start,.interp=0x7bf00400... yes checking for i686-pc-mingw32-gcc... no checking for i586-pc-mingw32-gcc... no checking for i486-pc-mingw32-gcc... no checking for i386-pc-mingw32-gcc... no checking for i686-mingw32msvc-gcc... no checking for i586-mingw32msvc-gcc... no checking for i486-mingw32msvc-gcc... no checking for i386-mingw32msvc-gcc... no checking for i686-mingw32-gcc... no checking for i586-mingw32-gcc... no checking for i486-mingw32-gcc... no checking for i386-mingw32-gcc... no checking for pthread_create in -lpthread... yes checking for X... no configure: error: X 32-bit development files not found. Wine will be built without X support, which probably isn't what you want. You will need to install 32-bit development packages of Xlib/Xfree86 at the very least. Use the --without-x option if you really want this. Also i had installed Xfree86 it's version was a follows: [tdceuser@user wine-1.2-rc1]$ XFree86 -version XFree86 Version 4.7.0 Release Date: 12 August 2007 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.15-1.2054_FC5 i686 [ELF] Current Operating System: Linux TSundar 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009 x86_64 Build Date: 15 August 2007 Changelog Date: 13 August 2007 Before reporting problems, check http://www.XFree86.Org/ to make sure that you have the latest version. Module Loader present Command line: XFree86 -version also i already tried the version wine-1.2.2 the same error coming for it also...[Rolling Eyes] does anyone can help me in this?? Billion thanks in advance!!!!!