On Fri, May 25, 2012 at 11:40 AM, H.J. Lu <hjl.to...@gmail.com> wrote: > On Fri, May 25, 2012 at 11:36 AM, NightStrike <nightstr...@gmail.com> wrote: >> Under what conditions does it fail? We use it daily at mingw-w64. >> >> On Fri, May 25, 2012 at 2:33 PM, H.J. Lu <hjl.to...@gmail.com> wrote: >>> When --with-sysroot is used to configure gcc, build will usually fail >>> if --with-build-sysroot isn't set. Should --with-build-sysroot be set to >>> the same value as --with-sysroot by default if --with-sysroot is used? >>> > > I am building GCC 4.7 with sysroot at /usr/gcc-x32-4.7/x86_64-linux > to support i386, x86-64 and x32. I configured GCC 4.7 with > > --target=x86_64-linux \ > --enable-languages=c,c++,fortran --with-demangler-in-ld > --enable-initfin > i-array --with-multilib-list=m32,m64,mx32 \ > \ > --with-sysroot=/usr/gcc-x32-4.7/x86_64-linux \ > --prefix=/usr/gcc-x32-4.7 \ > --with-local-prefix=/usr/local > > Build fails when compiling libgcc since ./gcc/xgcc -B.../gcc/ can't > find stdio.h. After adding > --with-build-sysroot=/usr/gcc-x32-4.7/x86_64-linux, > it builds fine. >
It was a pilot error. -- H.J.
