On 11/21/2017 01:40 PM, Zack Weinberg wrote: > On Tue, Nov 21, 2017 at 4:25 PM, Vineet Gupta >> >> make subdirs=nptl check fails as librt.so fails to link due to missing >> pthread symbols. The real librt built does have libpthread.so in its link >> cmd hence is fine, but not this librt. > > I've tripped over this myself but only when trying to do an > incremental rebuild under conditions where an incremental build won't > work. I do not know what those conditions are: I only know that > blowing away the build tree and starting over from scratch has, until > now, cured the problem. > > Are you seeing this in a build from scratch, not overriding subdirs? This is a rebuild for make check. So I have a cross compilation setup using builroot (to include my glibc branch from github etc). After the toolchain builds, I go to build/glibc/build and do make check, (doing with subdirs=nptl is same) But I know exactly what the problem is: libpthread.so is not present in the link cmd for build/nptl/librt.so. I just don't know hoe to coax the build system to include it (apparently that happens for the canonical rt/librt.so) -Vineet
