I've made check for getcwd function and used the generated script with Sun's CC compiler. It reports unexisting getcwd even if it really exists. Here is what I've done:
configure.in (just generating config.h): AC_INIT() AC_PROG_CC AC_PROG_CXX AC_CHECK_FUNCS(getcwd) AC_CONFIG_HEADER(config.h) AC_OUTPUT() I've run configure as: ./configure CC=CC CXX=CC When looking to config.log, there is this error: "configure", line 2365: Error: Only one of a set of overloaded functions can be extern "C". "configure", line 2383: Warning (Anachronism): Assigning extern "C" char(*)() to char(*)(). 1 Error(s) and 1 Warning(s) detected. The problem is that conftest.c includes stdlib.h via conftest.h. This declares getcwd. conftest.c declares it second time as: #ifdef __cplusplus extern "C" #endif /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */ char getcwd (); The compiler complains about extern "C". My question is whether this is autoconf bug or should I use ./configure CC=cc CXX=CC to really use C compiler for these tests. I'm using this: CC: WorkShop Compilers 5.0 01/12/04 C++ 5.0 Patch 107311-16 cc: WorkShop Compilers 5.0 98/12/15 C 5.0 SunOS 5.7 Generic_106541-20 sun4u sparc SUNW,Ultra-60 Thanks for any response. Martin
