Karanam Suryanarayana Rao Venkata Krishna wrote: > Hello, > I think I discovered a scenario that results in cache misses in spite of > using CCACHE_BASEDIR. > Consider the following command: > > CCACHE_BASEDIR=$PWD /bin/bash -c "ccache clang++ > -fdebug-prefix-map=/proc/self/cwd= -g -c -MD -MF hello.d -o hello.o > hello.cpp" > > It seems to me that is is perfectly alright to ask for debug prefix mapping > like: "-fdebug-prefix-map=/proc/self/cwd=" > Unfortunately, ccache is ending up hashing gnu_getcwd(); thus, even though > we use CCACHE_BASEDIR setting, such a cache cannot be shared by other > users' from different workspaces resulting in cache misses. ... > > If the string after "=" in the mapping is null string, then, I hash "./".
Can't you just use "$PWD" and ".", instead of this elaborate scheme ? Especially since using /proc/self/cwd doesn't even work, not with GCC... i.e. when you give that prefix, it will just look for that path string In the actual debug info, you will _still_ have a reference the cwd. /Anders _______________________________________________ ccache mailing list email@example.com https://lists.samba.org/mailman/listinfo/ccache