On Mon, Dec 2, 2013 at 5:44 PM, Jakub Jelinek <ja...@redhat.com> wrote: > On Mon, Dec 02, 2013 at 05:26:45PM +0100, Uros Bizjak wrote: >> No, so your patch doesn't regress anything. I can configure with >> --disable-libsanitizer to skip build of libsanitizer, although it >> would be nice to support RHEL5 derived long-term distributions. >> >> > Is there a way to test gcc in such environment w/o setting up VMs >> > (e.g. chroot, or some such)? >> >> Maybe gcc compile farm has linux-2.6.18 machine available? > > That or perhaps try say: > mkdir ~/centos5 > cd ~/centos5 > wget > http://mirrors.kernel.org/centos/5/os/x86_64/CentOS/glibc-devel-2.5-118.x86_64.rpm > wget > http://mirrors.kernel.org/centos/5/os/x86_64/CentOS/glibc-headers-2.5-118.x86_64.rpm > wget > http://mirrors.kernel.org/centos/5/os/x86_64/CentOS/kernel-headers-2.6.18-371.el5.x86_64.rpm > for i in *.rpm; do > rpm2cpio $i | cpio -id > done > > and then compile with > g++ -nostdinc `g++ -v -E -xc++ /dev/null 2>&1 | sed -n '/^#include </,/^End > of/{/\/usr\/include/d;s/^ \//-isystem /p}'` -isystem ~/centos5/usr/include/ > This command will use all standard C++ search paths except for /usr/include, > and will use ~/centos5/usr/include/ instead of that.
Doing this gives me: ../gcc/libsanitizer/sanitizer_common/sanitizer_platform_limits_linux.cc:24:20: fatal error: stddef.h: No such file or directory because stddef.h is found in /usr/include/linux; I guess we need some more gcc flags here. >> with #if LINUX_VERSION_CODE >= 132640 Good idea, let me try that.
