Hello, everyone. I'm on cygwin. autoconf 2.59. aclocal 1.9.6. The problem is that 'configure' script incorrectly finds the host C compiler (gcc) when the cross compiler (or32-elf-gcc) should be found. The content of 'configure.ac' is: AC_PREREQ(2.59) AC_INIT(foo, 1,0) set -x -v AC_CANONICAL_SYSTEM AC_PROG_CC set +x +v The cross compiler is called 'or32-elf-gcc', and it's installed in '/usr/local/cross/bin'. /usr/local/cross/bin is also in the PATH environment variable. $ aclocal /usr/share/aclocal/pstoedit.m4:7: warning: underquoted definition of AM_PATH_PSTOEDIT run info '(automake)Extending aclocal' or see http://sources.redhat.com/automake/automake.html#Extending-aclocal /usr/share/aclocal/libsmi.m4:8: warning: underquoted definition of AM_PATH_LIBSMI /usr/share/aclocal/libmcrypt.m4:17: warning: underquoted definition of AM_PATH_LIBMCRYPT /usr/share/aclocal/cppunit.m4:4: warning: underquoted definition of AM_PATH_CPPUNIT $ autoconf $ ./configure --target=or32-elf checking build system type... i686-pc-cygwin checking host system type... i686-pc-cygwin checking target system type... or32-unknown-elf checking for gcc... gcc In 'configure', AC_CANONICAL_SYSTEM produces: ac_cv_target_alias=or32-elf program_prefix=or32-elf I guess AC_PROG_CC should prefix 'gcc' with 'ac_cv_target_alias' to find the C compiler, isn't it? But it didn't. From the code snippet in /usr/share/autoconf/autoconf/c.m4: # AC_PROG_CC([COMPILER ...]) # -------------------------- # COMPILER ... is a space separated list of C compilers to search for. # This just gives the user an opportunity to specify an alternative # search list for the C compiler. AN_MAKEVAR([CC], [AC_PROG_CC]) AN_PROGRAM([cc], [AC_PROG_CC]) AN_PROGRAM([gcc], [AC_PROG_CC]) AC_DEFUN([AC_PROG_CC], [AC_LANG_PUSH(C)dnl AC_ARG_VAR([CC], [C compiler command])dnl AC_ARG_VAR([CFLAGS], [C compiler flags])dnl _AC_ARG_VAR_LDFLAGS()dnl _AC_ARG_VAR_CPPFLAGS()dnl m4_ifval([$1], [AC_CHECK_TOOLS(CC, [$1])], [AC_CHECK_TOOL(CC, gcc) if test -z "$CC"; then AC_CHECK_TOOL(CC, cc) fi if test -z "$CC"; then AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) fi if test -z "$CC"; then AC_CHECK_TOOLS(CC, cl) fi ]) -- Tzu-Chien Chiu URL: http://www.csie.nctu.edu.tw/~jwchiu/ _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf