[Bug 1942895] Re: Build fails on riscv64
Brian Murray
1942895 at bugs.launchpad.net
Tue Sep 7 16:42:15 UTC 2021
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https://bugs.launchpad.net/bugs/1942895
Title:
Build fails on riscv64
Status in pocl package in Ubuntu:
New
Bug description:
Ubuntu release: hirsute/impish
pocl gets the host machine cache line size using
getconf(LEVEL1_DCACHE_LINESIZE) and when this value is not defined by
the underlying architecture, glibc returns 0 which is correctly
handled by pocl CMakeLists.txt. But riscv64 defines this system
variable since glibc 2.33 (cf commit 15b38ffc104a ("riscv: Get cache
information through sysconf")) and amd64 does not. Then when using
qemu usermode emulation to build pocl for riscv64 on an amd64 host,
this system variable is not created and then the riscv implementation
now returns -1 instead of 0, which is mapped to the string "undefined"
by getconf utility. This value is not handled by pocl and then the
build fails.
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