Hi Thank you all for the replies, very appreciated, yes I did of course include -lm. I use other math functions and it is alright, only long double functions are missing. So, are they not included on cygwin entirely, or should I download a newer libc? I just downloaded and installed from the nearest mirror thinking the latest will come any way thank you again, kind regards, Manal 2008/11/19 Anandkumar, CB IN BLR SISL <anand.cb@xxxxxxxxxxx> > > Hai manal, > Did you provide the option -lm while compiling your code. > > With regards, > Anandkumar.C.B > > -----Original Message----- > From: gcc-help-owner@xxxxxxxxxxx [mailto:gcc-help-owner@xxxxxxxxxxx] On > Behalf Of Manal Helal > Sent: Tuesday, November 18, 2008 4:37 PM > To: gcc-help@xxxxxxxxxxx > Subject: long math functions on cygwin > > Hello > > > I am trying to compile some unix code on cygwin, using gcc version: > > ***************************************** > Reading specs from /usr/lib/gcc/i686-pc-cygwin/3.4.4/specs > Configured with: > /usr/build/package/orig/test.respin/gcc-3.4.4-3/configure --ver bose > --prefix=/usr --exec-prefix=/usr --sysconfdir=/etc --libdir=/usr/lib > --libe xecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info > --enable-langu ages=c,ada,c++,d,f77,pascal,java,objc --enable-nls > --without-included-gettext -- enable-version-specific-runtime-libs > --without-x --enable-libgcj > --disable-java- > awt --with-system-zlib --enable-interpreter --disable-libgcj-debug > --enable-thre ads=posix --enable-java-gc=boehm --disable-win32-registry > --enable-sjlj-exceptio ns --enable-hash-synchronization > --enable-libstdcxx-debug Thread model: posix gcc version 3.4.4 (cygming > special, gdc 0.12, using dmd 0.125) > > ***************************************** > > and I get these errors: > > ***************************************** > /home/user/proj/main.c:907: undefined reference to `_sqrtl' > /home/user/proj/main.c:1743: undefined reference to `_powl' > /home/user/proj/main.c:2006: undefined reference to `_ceill' > /home/user/proj/main.c:2035: undefined reference to `_floorl' > ***************************************** > > > > Can you please help me find what is missing? > > thank you very much, > > Kind Regards, > > manal > > > > > > Important notice:This e-mail and any attachment thereto contains corporate proprietary information. If you have received it by mistake, please notify us immediately by reply e-mail and delete this e-mail and its attachments from your system. Thank You.