1dnl This is the newlib/libm configure.in file. 2dnl Process this file with autoconf to produce a configure script. 3 4AC_PREREQ(2.59) 5AC_INIT([newlib],[NEWLIB_VERSION]) 6AC_CONFIG_SRCDIR([libm.texinfo]) 7 8AC_ARG_ENABLE(newlib_hw_fp, 9[ --enable-newlib-hw-fp Turn on hardware floating point math], 10[case "${enableval}" in 11 yes) newlib_hw_fp=true ;; 12 no) newlib_hw_fp=false ;; 13 *) AC_MSG_ERROR(bad value ${enableval} for --enable-newlib-hw-fp) ;; 14 esac],[newlib_hw_fp=false]) 15AM_CONDITIONAL(NEWLIB_HW_FP, test x$newlib_hw_fp = xtrue) 16 17dnl Autoconf 2.59 doesn't support the AC_TYPE_LONG_DOUBLE macro. Instead of: 18dnl AC_TYPE_LONG_DOUBLE 19dnl AM_CONDITIONAL(HAVE_LONG_DOUBLE, test x"$ac_cv_type_long_double" = x"yes") 20dnl we specify our own long double test. 21AC_CACHE_CHECK([Checking long double support], [acnewlib_cv_type_long_double],[dnl 22cat > conftest.c <<EOF 23int main() { 24long double x = 0.0L; 25return 0; 26} 27EOF 28if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c conftest.c 1>&AS_MESSAGE_LOG_FD]) 29then 30 acnewlib_cv_type_long_double=yes 31else 32 acnewlib_cv_type_long_double=no 33fi 34rm -f conftest*]) 35AM_CONDITIONAL(HAVE_LONG_DOUBLE, test x"$acnewlib_cv_type_long_double" = x"yes") 36 37dnl Can't be done in NEWLIB_CONFIGURE because that confuses automake. 38AC_CONFIG_AUX_DIR(../..) 39 40NEWLIB_CONFIGURE(..) 41 42dnl We have to enable libtool after NEWLIB_CONFIGURE because if we try and 43dnl add it into NEWLIB_CONFIGURE, executable tests are made before the first 44dnl line of the macro which fail because appropriate LDFLAGS are not set. 45_LT_DECL_SED 46_LT_PROG_ECHO_BACKSLASH 47if test "${use_libtool}" = "yes"; then 48AC_LIBTOOL_WIN32_DLL 49AM_PROG_LIBTOOL 50fi 51 52AC_CONFIG_SUBDIRS(machine) 53 54LIBM_MACHINE_LIB= 55if test -n "${libm_machine_dir}"; then 56 if test "${use_libtool}" = "yes"; then 57 LIBM_MACHINE_LIB=machine/${libm_machine_dir}/lib${libm_machine_dir}.${aext} 58 else 59 LIBM_MACHINE_LIB=machine/lib.${aext} 60 fi 61fi 62 63AC_SUBST(LIBM_MACHINE_LIB) 64 65AC_CONFIG_FILES([Makefile math/Makefile mathfp/Makefile common/Makefile complex/Makefile]) 66AC_OUTPUT 67