I'm testing different configurations of a C++ library. When I test on AIX with XLC I am catching an error: -bash-4.4$ OBJECT_MODE=64 CXX=xlC ./configure checking for a BSD-compatible install... ./install-sh -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... ./install-sh -c -d checking for gawk... gawk checking whether make sets $(MAKE)... yes checking whether make supports nested variables... yes checking for style of include used by make... GNU checking for gcc... gcc checking whether the C compiler works... no configure: error: in `/home/noloader/cryptopp': configure: error: C compiler cannot create executables See `config.log' for more details ... The problem is using the wrong compiler: configure:3381: gcc conftest.c >&5 Assembler: /tmp/cczCkD4X.s: line 9: Only .llong should be used for relocatable expressions. configure:3385: $? = 1 configure:3423: result: no Our configure.ac has AC_PROG_CXX after the various init's, and lacks AC_PROG_CC. We don't do anything with the C compiler because we are a C++ library. How do we tell Autoconf to use the specified C++ compiler for all tests? Thanks in advance. _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf