$1
_ACEOF])
-AC_CACHE_CHECK(
- [whether the assembler is likely to work], [mdw_cv_gnuish_as],
- [AC_LANG_PUSH([CPPAS])
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
- .text
- .L\$_test = 23
-.macro mymac
- .L\$_test = .L\$_test + 1
-.endm
- .globl foo
- .extern bar
- mymac]])],
- [mdw_cv_gnuish_as=yes], [mdw_cv_gnuish_as=no])
- AC_LANG_POP([CPPAS])])
-AM_CONDITIONAL([GNUISH_AS], [test $mdw_cv_gnuish_as = yes])
-
dnl--------------------------------------------------------------------------
dnl Host-specific configuration.
-AC_MSG_CHECKING([CPU family and ABI])
-
dnl The table of CPU families and ABIs which we might support. Support is
dnl not uniform: each dispatched function might or might not have an
dnl implementation for any particular CPU/ABI combination.
[m4_undefine([catacomb_seen_abi/$3])])])
dnl Identify the current host.
-if test $mdw_cv_gnuish_as = no; then
- CPUFAM=nil ABI=nil
-else
- case $host_cpu,$host_os in
- m4_define([catacomb_CPU_CASE],
- [$1) CPUFAM=$2 ABI=$3 ;;
+case $host_cpu,$host_os in
+ m4_define([catacomb_CPU_CASE],
+ [$1) CPUFAM=$2 ABI=$3 ;;
])
- catacomb_CPU_FAMILIES([catacomb_CPU_CASE])
- *) CPUFAM=nil ABI=nil ;;
- esac
-fi
+ catacomb_CPU_FAMILIES([catacomb_CPU_CASE])
+ *) CPUFAM=nil ABI=nil ;;
+esac
-dnl Figure out the current CPU.
-catacomb_CPU_FAMILIES([catacomb_CLEAR_FLAGS])
-case $CPUFAM in
- m4_define([catacomb_DEFINE_CPU],
- [m4_ifdef([catacomb_seen_cpu/$2], [],
- [$2)
- AC_DEFINE([CPUFAM_]m4_translit([$2], [a-z], [A-Z]), [1],
- [Define if host CPU family is \`$2\'.])
- ;;m4_define([catacomb_seen_cpu/$2], [t])])])
- catacomb_CPU_FAMILIES([catacomb_DEFINE_CPU])
+dnl Now check the assembler. We may have target-specific requirements here,
+dnl so we couldn't do this any earlier.
+AC_CACHE_CHECK(
+ [whether the assembler is likely to work], [mdw_cv_gnuish_as],
+ [AC_LANG_PUSH([CPPAS])
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+ .text
+ .L\$_test = 23
+.macro mymac
+ .L\$_test = .L\$_test + 1
+.endm
+ .globl foo
+ .extern bar
+ mymac]])],
+ [mdw_cv_gnuish_as=yes], [mdw_cv_gnuish_as=no])
+ AC_LANG_POP([CPPAS])])
+AM_CONDITIONAL([GNUISH_AS], [test $mdw_cv_gnuish_as = yes])
+if test $mdw_cv_gnuish_as = no; then CPUFAM=nil ABI=nil; fi
+
+dnl A hairy macro used to set the `CPUFAM_...' and `ABI_...' variables. We
+dnl basically need to do the same thing for the family and ABI, so it's worth
+dnl some effort to hide the ugliness.
+m4_define([catacomb_DEFINE_CPU_OR_ABI],
+[case $$1 in
+ m4_define([_def],
+ [m4_ifdef([catacomb_seen_$3/$$2], [],
+ [$$2)
+ AC_DEFINE([$4]m4_translit([$$2], [a-z], [A-Z]), [1], [$5])
+ ;;m4_define([catacomb_seen_$3/$$2], [t])])])
+ catacomb_CPU_FAMILIES([_def])
nil) ;;
- *) AC_MSG_ERROR([BUG: unexpected cpufam \`$CPUFAM']) ;;
-esac
-AC_SUBST([CPUFAM])
+ *) AC_MSG_ERROR([BUG: unexpected $1 \`$1']) ;;
+esac])
+
+dnl Now that's out the way, we can explain what we're doing.
+AC_MSG_CHECKING([CPU family and ABI])
-dnl Figure out the current ABI.
+dnl Figure out the target CPU family and ABI.
catacomb_CPU_FAMILIES([catacomb_CLEAR_FLAGS])
-case $ABI in
- m4_define([catacomb_DEFINE_ABI],
- [m4_ifdef([catacomb_seen_abi/$3], [],
- [$3)
- AC_DEFINE([ABI_]m4_translit([$3], [a-z], [A-Z]), [1],
- [Define if host ABI variant is \`$3\'.])
- ;;m4_define([catacomb_seen_abi/$3], [t])])])
- catacomb_CPU_FAMILIES([catacomb_DEFINE_ABI])
- nil) ;;
- *) AC_MSG_ERROR([BUG: unexpected ABI \`$ABI']) ;;
-esac
-AC_SUBST([ABI])
+catacomb_DEFINE_CPU_OR_ABI([CPUFAM], [2], [cpu],
+ [CPUFAM_], [Define if target CPU is \`$][2\'.])
+catacomb_DEFINE_CPU_OR_ABI([ABI], [3], [abi],
+ [ABI_], [Define if target ABI is \`$][3\'.])
dnl Establish Automake conditions for things.
catacomb_CPU_FAMILIES([catacomb_CLEAR_FLAGS])