I need to use an older version of gcc in order to help debug an old, released build. We will also run new builds with gcc-4.3.5 for compatibility reasons. The original build machine is toast. I am working in a newly provisioned machine running AIX 6.1. The gcc-4.3.5 that is available via rpm uses the aix thread model and I need to build with pthreads. I have built pre-req's bintuils-2.22, mpfr-3.1.1-1, gmp-5.0.5. I am currently trying to bootstrap using gcc-4.3.5-1. I have tried the native compiler, xlc, but had other errors and am back to using gcc. (Not to mention that the documentation told me that using gcc was an better path to follow.) Question #1) --enable-threads=posix does not seem to work. Is this flag supported or perhaps I am using it incorrectly? Here is my configure statement: /opt/gcc_work/gcc-4.3.5-src/ configure --disable-shared --enable-static --enable-threads=posix --prefix=/opt/freeware/gcc_4_3_5 --exec-prefix=/opt/freeware/gcc_4_3_5 -enable-languages=c,c++ --srcdir=/opt/gcc_work/gcc-4.3.5-src --includedir=/opt/gcc_work/gcc-4.3.5-src/include "CFLAGS=-pthread" "CXXFLAGS=-pthread" In <build dir>/config.log I see: " Configured with: ../gcc-4.3.5/configure --with-as=/usr/bin/as --with-ld=/usr/bin/ld --enable-languages=c,c++,fortran --prefix= /opt/freeware --enable-threads --enable-version-specific-runtime-libs --disable-nls --enable-decimal-float=dpd --host=powerpc- ibm-aix6.1.0.0 Thread model: aix " The thread model might have been an omen that leads to my second question. Question #2) How can I propagate the use of pthreads into the build? The build is currently dying in the intl directory. Here is the trouble area from <build dir>/intl/config.log: " configure:2092: /data/gcc_work/gcc-4.3.5-build/./prev-gcc/xgcc -B/data/gcc_work/gcc-4.3.5-build/./prev-gcc/ -B/opt/freeware/g cc_4_3_5/powerpc-ibm-aix6.1.0.0/bin/ -V </dev/null >&5 xgcc: '-V' must come at the start of the command line configure:2095: $? = 1 configure:2118: checking for C compiler default output file name configure:2121: /data/gcc_work/gcc-4.3.5-build/./prev-gcc/xgcc -B/data/gcc_work/gcc-4.3.5-build/./prev-gcc/ -B/opt/freeware/gcc_4_3_5/powerpc-ibm-aix6.1.0.0/bin/ -g -O2 -Wl,-bbigtoc conftest.c >&5 ld: 0711-317 ERROR: Undefined symbol: .pthread_cond_wait ld: 0711-317 ERROR: Undefined symbol: .pthread_cond_broadcast ld: 0711-317 ERROR: Undefined symbol: .pthread_mutexattr_init ld: 0711-317 ERROR: Undefined symbol: .pthread_mutexattr_settype ld: 0711-317 ERROR: Undefined symbol: .pthread_mutex_init ld: 0711-317 ERROR: Undefined symbol: .pthread_mutexattr_destroy ld: 0711-317 ERROR: Undefined symbol: .pthread_mutex_unlock ld: 0711-317 ERROR: Undefined symbol: .pthread_mutex_trylock ld: 0711-317 ERROR: Undefined symbol: .pthread_mutex_lock ld: 0711-317 ERROR: Undefined symbol: .pthread_setspecific ld: 0711-317 ERROR: Undefined symbol: .pthread_getspecific ld: 0711-317 ERROR: Undefined symbol: .pthread_key_delete ld: 0711-317 ERROR: Undefined symbol: .pthread_key_create ld: 0711-317 ERROR: Undefined symbol: .pthread_once ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information. collect2: ld returned 8 exit status configure:2124: $? = 1 " If I add "-lpthread" to the command that configure ran and run it myself, it works: " bash-3.2# /data/gcc_work/gcc-4.3.5-build/./prev-gcc/xgcc -B/data/gcc_work/gcc-4.3.5-build/./prev-gcc/ -B/opt/freeware/gcc_4_3_5/powerpc-ibm-aix6.1.0.0/bin/ -g -O2 -Wl,-bbigtoc -lpthread /tmp/conftest.c bash-3.2# echo $? 0 " Thanks, -Rick
