Hi, I have searched online for awhile and I still can't find a good explanation why I can't use static linking with librt.a. /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/librt.a(clock_gettime.o): In function `clock_gettime': (.text+0x197): undefined reference to `_dl_cpuclock_offset' collect2: ld returned 1 exit status It seems like librt.a is a static library but it doesn't use static linking for its actual implementation _dl_cpuclock_offset? Some people suggested (without an explanation) to explicitly specify -lpthread, but it doesn't work for me either. $ gcc -v Using built-in specs. Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --disable-plugin --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic --host=x86_64-redhat-linux Thread model: posix gcc version 4.1.2 20080704 (Red Hat 4.1.2-52) Thanks in advance. Cheers, Hei
