This file contains any messages produced by compilers while running configure, to aid debugging if configure makes a mistake. configure:1163: checking host system type configure:1184: checking target system type configure:1202: checking build system type configure:1281: checking for mawk configure:1281: checking for gawk configure:1281: checking for nawk configure:1281: checking for awk configure:1366: checking for python2.7 configure:1476: checking Python environment is Mozilla virtualenv configure:1697: checking for perl5 configure:1697: checking for perl configure:2209: checking for objcopy configure:3177: checking for gcc configure:3290: checking whether the C compiler (gcc -march=i486 -Os -pipe -fomit-frame-pointer ) works configure:3306: gcc -o conftest -march=i486 -Os -pipe -fomit-frame-pointer -O2 conftest.c 1>&5 configure:3332: checking whether the C compiler (gcc -march=i486 -Os -pipe -fomit-frame-pointer ) is a cross-compiler configure:3337: checking whether we are using GNU C configure:3346: gcc -E conftest.c configure:3365: checking whether gcc accepts -g configure:3406: checking for c++ configure:3438: checking whether the C++ compiler (c++ -march=i486 -Os -pipe -fomit-frame-pointer ) works configure:3454: c++ -o conftest -march=i486 -Os -pipe -fomit-frame-pointer -O2 conftest.C 1>&5 configure:3480: checking whether the C++ compiler (c++ -march=i486 -Os -pipe -fomit-frame-pointer ) is a cross-compiler configure:3485: checking whether we are using GNU C++ configure:3494: c++ -E conftest.C configure:3513: checking whether c++ accepts -g configure:3547: checking for ranlib configure:3579: checking for as configure:3633: checking for ar configure:3668: checking for ld configure:3703: checking for strip configure:3738: checking for windres configure:3773: checking for otool configure: error: Your C and C++ compilers are different. You need to use the same compiler.