# Look for C, C++ and fortran compilers to be used in the testsuite.
+dnl We don't care whether the C Compiler supports "-c -o" together
+dnl or not. OTOH, we don't want $CC to be rewritten, so we must
+dnl redefine AM_PROG_CC_C_O to be a no-op.
+m4_define([AM_PROG_CC_C_O], [])
+
dnl We don't want to abort our configuration script if no C compiler is
dnl available, as such a compiler is only required to run part of the
dnl testsuite, not to build or install Automake. Ditto for C++, Fortran