diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 86 |
1 files changed, 62 insertions, 24 deletions
@@ -884,42 +884,80 @@ fi # # On some GNU/Linux distros, the C compiler is broken into `multilib' (for # 32-bit and 64-bit support, with their own headers). On these systems, -# `sys/cdefs.h' is not available by default. So if the user hasn't manually -# installed it before this configure script, GCC won't build. We are thus -# explicitly testing a small C program here to see if the host's C compiler -# won't have any problems in building GCC. +# `/usr/include/sys/cdefs.h' and `/usr/lib/libc.a' are not available by +# default. So GCC will crash with different ugly errors! The only solution +# is that user manually installs the `multilib' part as root, before +# running the configure script. +# +# Note that `sys/cdefs.h' may be available in other directories (for +# example `/usr/include/x86_64-linux-gnu/') that are automatically included +# in an installed GCC. HOWEVER during the build of GCC, all those other +# directories are ignored. So even if they exist, they are useless. +warningsleep=0 if [ $host_cc = 0 ]; then - tfile=$sdir/gcc-cdefs-test.c; - echo "#include <sys/cdefs.h>" > $tfile; - echo "int main(void){return 0;}" >> $tfile; - if gcc $tfile -o $sdir/gcc-cdefs-test &> /dev/null; then - rm $sdir/gcc-cdefs-test*; - else + if ! [ -f /usr/include/sys/cdefs.h ]; then host_cc=1 - fi; - rm -f $tfile; + warningsleep=1 + cat <<EOF + +!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! +!!!!!!!!!!!!!!!!!!!!!! Warning !!!!!!!!!!!!!!!!!!!!!! +!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + +This system doesn't have '/usr/include/sys/cdefs.h'. Because of this, the +project can't build its custom GCC to ensure better reproducibility. We +strongly recommend installing the proper package (for your operating +system) that installs this necessary file. For example on some Debian-based +GNU/Linux distros, you need these two packages: 'gcc-multilib' and +'g++-multilib'. +!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + +EOF + fi - if [ $host_cc = 1 ]; then + if [ -f /usr/lib/libc.a ] || [ -f /usr/lib64/libc.a ]; then + # This is just a place holder + host_cc=$host_cc + else + host_cc=1 + warningsleep=1 cat <<EOF !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!! Warning !!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -This system's C compiler (called with 'gcc') can't include -'sys/cdefs.h. Because of this, the project can't build its custom GCC to -ensure better reproducibility. We strongly recommend installing the proper -package (for your operating system) that installs this necessary file. For -example on some Debian-based GNU/Linux distros, you need these two -packages: 'gcc-multilib' and 'g++-multilib'. - -However, since GCC is pretty low-level, this configuration script will -continue in 5 seconds and use your system's C compiler (it won't build a -custom GCC). But please consider installing the necessary package(s) to -complete your C compiler, then re-run './configure'. +This system doesn't have '/usr/lib/libc.a' or '/usr/lib64/libc.a'. Because +of this, the project can't build its custom GCC to ensure better +reproducibility. We strongly recommend installing the proper package (for +your operating system) that installs this necessary file. + +Some possible solutions: + 1. On some Debian-based GNU/Linux distros, these two packages may fix the + problem: 'gcc-multilib' and 'g++-multilib'. + 2. (BE CAREFUL!) If you have '/usr/lib/x86_64-linux-gnu' but don't have + '/usr/lib64', then running the following command might fix this + particular problem by making a symbolic link. + $ sudo ln -s /usr/lib/x86_64-linux-gnu /usr/lib64 + After the configure script is finished, delete the link with 'rm + /usr/lib64' (you won't need it any more as far as this project is + concerned). !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! EOF + fi + + if [ $warningsleep = 1 ]; then + cat <<EOF + +PLEASE SEE THE WARNINGS ABOVE. + +Since GCC is pretty low-level, this configuration script will continue in 5 +seconds and use your system's C compiler (it won't build a custom GCC). But +please consider installing the necessary package(s) to complete your C +compiler, then re-run './configure'. + +EOF sleep 5 fi fi |