+ case "$target_alias" in
+ *-linux*)
+ # Check for available headers.
+ AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
+ machine/endian.h machine/param.h sys/machine.h sys/types.h \
+ fp.h locale.h float.h inttypes.h])
+ SECTION_FLAGS='-ffunction-sections -fdata-sections'
+ AC_SUBST(SECTION_FLAGS)
+ GLIBCPP_CHECK_LINKER_FEATURES
+ GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
+ GLIBCPP_CHECK_WCHAR_T_SUPPORT
+ os_include_dir="config/os/gnu-linux"
+ AC_DEFINE(HAVE_COPYSIGN)
+ AC_DEFINE(HAVE_COPYSIGNF)
+ AC_DEFINE(HAVE_FINITEF)
+ AC_DEFINE(HAVE_FREXPF)
+ AC_DEFINE(HAVE_HYPOTF)
+ AC_DEFINE(HAVE_SINCOS)
+ AC_DEFINE(HAVE_SINCOSF)
+ if test x"long_double_math_on_this_cpu" = x"yes"; then
+ AC_DEFINE(HAVE_HYPOTL)
+ fi
+ ;;
+ *-hpux*)
+ # Check for available headers.
+ AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
+ machine/endian.h machine/param.h sys/machine.h sys/types.h \
+ fp.h locale.h float.h inttypes.h])
+ SECTION_FLAGS='-ffunction-sections -fdata-sections'
+ AC_SUBST(SECTION_FLAGS)
+ GLIBCPP_CHECK_LINKER_FEATURES
+ GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
+ GLIBCPP_CHECK_WCHAR_T_SUPPORT
+ os_include_dir="config/os/hpux"
+ AC_DEFINE(HAVE_COPYSIGN)
+ AC_DEFINE(HAVE_COPYSIGNF)
+ AC_DEFINE(HAVE_FINITEF)
+ AC_DEFINE(HAVE_FREXPF)
+ AC_DEFINE(HAVE_HYPOT)
+ AC_DEFINE(HAVE_SINCOS)
+ AC_DEFINE(HAVE_SINCOSF)
+ ;;
+ *-netbsd*)
+ # Check for available headers.
+ AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
+ machine/endian.h machine/param.h sys/machine.h sys/types.h \
+ fp.h locale.h float.h inttypes.h])
+ SECTION_FLAGS='-ffunction-sections -fdata-sections'
+ AC_SUBST(SECTION_FLAGS)
+ GLIBCPP_CHECK_LINKER_FEATURES
+ GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
+ GLIBCPP_CHECK_WCHAR_T_SUPPORT
+ os_include_dir="config/os/bsd/netbsd"
+ AC_DEFINE(HAVE_COPYSIGN)
+ AC_DEFINE(HAVE_COPYSIGNF)
+ AC_DEFINE(HAVE_FINITEF)
+ AC_DEFINE(HAVE_FREXPF)
+ AC_DEFINE(HAVE_HYPOTF)
+ ;;