dlmalloc.c:1752:44: error: implicit declaration of function ‘mremap’ about lk HOT 6 CLOSED

You're using the linux toolchain, which is not supported. I think it's confusing the dlmalloc code, which thinks it is building for linux.

from lk.

yes, looks like toolchain issue, i didn't have this build issue.

from lk.

Let us know if this or a similar issue persists with the correct toolchain.

from lk.

For what it's worth, I was able to build with aarch64-linux-gnu-gcc by inserting #undef linux at the start of external/lib/heap/dlmalloc/dlmalloc.c. Since aarch64-linux-gnu-gcc is part of Debian and Ubuntu, using the wrong toolchain might be easier for some people. See also #195.

from lk.

that's a classic mixing up OSTYPE platforms with host/target specifics; you should never rely on generic-vendor targets.

from lk.

Probably fairly harmless to undef the linux thing, though clearly it's a hack. Too bad it's actually set by the compiler. Wonder if it's possible to -Ulinux it on the command line, if the build system detects a linux toolchain...

from lk.