Sorry for the formatting break. Resending...
I encountered a bug when trying to build a RISC-V GCC cross-compiler. I
believe that the most relevant configure options that I used are:
--disable-multilib --with-arch=rv32ia --with-abi=ilp32
However, I can post a full list if needed.
I have the GCC git tree located at the path "/home/quantum/devel/git/gcc"
and am building it inside the sub-directory "build1". It seems to fail
when attempting to build the self-tests. Here is an excerpt from the
build output:
/home/quantum/devel/git/gcc/build1/./gcc/xgcc
-B/home/quantum/devel/git/gcc/build1/./gcc/ -xc -nostdinc /dev/null -S -o
/dev/null -fself-test=.././../gcc/testsuite/selftests
/home/quantum/devel/git/gcc/build1/./gcc/xgcc
-B/home/quantum/devel/git/gcc/build1/./gcc/ -xc++ -nostdinc /dev/null -S -o
/dev/null -fself-test=.././../gcc/testsuite/selftests
cc1: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1plus: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1plus: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1plus: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1plus: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1plus: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1plus: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1plus: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1plus: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1plus: error: '-mdiv' requires '-march' to subsume the 'M' extension
cc1plus: error: '-mdiv' requires '-march' to subsume the 'M' extension
It seems to be trying to build test suites that are in conflict with my
march settings.
Interestingly, I didn't have this issue when trying to build the release
version tagged "releases/gcc-13.2.0". However, I wanted to use some
newer features that were only merged less than a month ago. I tried to
build the GIT tree and encountered this error. I attempted to bisect
the issue and found that it only happens when "gcc/DEV-PHASE" is set to:
experimental
I'm not very familar with GCC's build system, but this suggests to me
that the tests are only conditionally built on experimental/development
codebase snapshots.
Michael T. Kloos
