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Friends, I have decided to hand-build the tool chain. I believe i am successful after some retrials. Of course this wouldn't have been possible without the beautiful CT-NG tool. I would like to point out couple of issues from the CT-NG side that I faced. 1. While building glibc for 32 bit hosts on 64 bit CPU, to resolve the "TLS required" problem, we need to pass -march=i686 as part of CFLAGS. Also the --host macro should be set to reflect the 32 bit environment (like i686-unknown-linux-gnu). 2. Both in sysroot and in sysroot/usr/ directories, the lib32 and lib64 are sym-linked to lib directory. This needs to be modified so that lib32 is a symlink to lib/32. this has to be done in both places. 3. This may not be an issue with CT-NG, but I will spell out any way. The --prefix being used for binutils and the gcc must be same, at least in recent versions of the gcc / binutils. The binutils uses release-area prefix, but the pass-1 and pass-2 configure scripts specify the sysroot area. 4. this is a package specific issue. cloog-ppl is no longer there for newer GCC. For compiling gcc, the configure script needs to be passed --enable-cloog-backend=isl as option. Please let me know if these are real issues or my creations :). I faced other issues, but i believe they are largely my creations and/or the specific package bugs. FWIW, my package combination is - binutils - 2.23 cloog - 0.16.3 gcc - 4.6.3 glibc- 2.16.0 gmp - 5.0.5 linux - 2.6.32.12 mpc -1.0.1 mpfr - 3.1.1 ppl - 0.12.1 Thanks Vissu On Tue, Aug 27, 2013 at 12:03 AM, Bandaru Viswanath <tripuraari@gmail.com> wrote: > HI, > > Just wanted to add that the latest version from mercurial also gives > the same error/output. > > Thanks > vissu > > On Mon, Aug 26, 2013 at 10:47 PM, Bandaru Viswanath > <tripuraari@gmail.com> wrote: >> Friends, >> >> I have been trying CT-NG (1.18.0) to build a 64-bit and 32-bit capable >> toolchain. used the x86_64-unknown-linux-gnu sample, and enabled the >> multilib option in there. My host is a x86_64 host. the ct-ng build >> threw an error during "Installing C library headers & start files" >> phase. >> >> Installing C library headers & start files >> [EXTRA] Configuring C library >> [EXTRA] Installing C library headers >> [EXTRA] Installing C library start files >> [INFO ] ================================================================= >> [INFO ] Building for multilib subdir='32' >> [EXTRA] Configuring C library >> [EXTRA] Installing C library start files >> [ERROR] nptl/sysdeps/x86_64/tls.h:69:3: error: #error "TLS >> support is required." >> >> ..... more errors like this and like >> <stdin>:11: error: 'REG_RBP' undeclared (first use in this function) >> [ERROR] <stdin>:11: error: (Each undeclared identifier is >> reported only once >> >> Could you please let me know if I made any mistake somewhere ? >> Enabling multilib is the only change i made to the sample. I have >> tried few other combinations - >> >> 1. unchanged x86_64-unknown-linux-gnu works fine. >> 2. selecting eglibc instead of glibc and with multilib fails. >> 3. the x86_64-unknown-linux-uclibc sample, with multilib fails too. >> >> The failures in 2 & 3 are different from the one I mentioned above. >> >> Could you please let me know if I made any mistake somewhere or how to >> get the multilib working fine ? >> >> Thanks >> vissu -- For unsubscribe information see http://sourceware.org/lists.html#faq
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