diff -ru algol68g-3.3.23.orig/configure algol68g-3.3.23/configure
--- algol68g-3.3.23.orig/configure	2023-09-16 22:21:31.000000000 +0200
+++ algol68g-3.3.23/configure	2023-09-18 15:18:17.972370415 +0200
@@ -2889,6 +2889,20 @@
 printf "%s\n" "linux" >&6; }
   ;;
 #
+# Midipix.
+#
+*-*-midipix*)
+
+printf "%s\n" "#define BUILD_MIDIPIX 1" >>confdefs.h
+
+
+printf "%s\n" "#define HAVE_IEEE_754 1" >>confdefs.h
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: midipix" >&5
+printf "%s\n" "midipix" >&6; }
+  ;;
+
+#
 # Cygwin.
 #
 *86-*-cygwin* | *86_64-*-cygwin*)
@@ -5001,43 +5015,6 @@
 #
 # Test on gcc capabilities.
 #
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking __attribute__((aligned())) supported" >&5
-printf %s "checking __attribute__((aligned())) supported... " >&6; }
-
-if test "$cross_compiling" = yes
-then :
-  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main (void)
-{
-typedef int aint __attribute__((aligned(8)));
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-   { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "stop -- C compiler does not support __attribute__aligned directive
-See \`config.log' for more details" "$LINENO" 5; }
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for inline" >&5
 printf %s "checking for inline... " >&6; }
 if test ${ac_cv_c_inline+y}
@@ -5552,49 +5529,6 @@
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
-#
-# Test on glibc
-#
-
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking GNU C library" >&5
-printf %s "checking GNU C library... " >&6; }
-if test "$cross_compiling" = yes
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: assuming no" >&5
-printf "%s\n" "assuming no" >&6; }
-   enable_generic=yes
-
-
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main (void)
-{
-(void) gnu_get_libc_version();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-
-printf "%s\n" "#define HAVE_GNU_C_LIB 1" >>confdefs.h
-
-
-else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-   enable_generic=yes
-
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
 
 #
 # We know about the platform now.
@@ -5605,11 +5539,6 @@
   enable_core=yes
 fi
 
-if test "x$enable_generic" = "xyes"; then
-  enable_standard_types=yes
-  enable_long_types=no
-fi
-
 if test "x$enable_core" = "xyes"; then
   enable_compiler=no
   enable_curl=no
@@ -6648,318 +6577,6 @@
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: optional headers and libraries..." >&5
 printf "%s\n" "$as_me: optional headers and libraries..." >&6;}
 
-if test "x$enable_standard_types" = "xyes"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking int is 32 bit" >&5
-printf %s "checking int is 32 bit... " >&6; }
-  if test "$cross_compiling" = yes
-then :
-  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main (void)
-{
-return sizeof (int) != 4;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-   enable_long_types=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking unsigned is 32 bit" >&5
-printf %s "checking unsigned is 32 bit... " >&6; }
-  if test "$cross_compiling" = yes
-then :
-  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main (void)
-{
-return sizeof (unsigned) != 4;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-     enable_long_types=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking uint64_t is 64 bit" >&5
-printf %s "checking uint64_t is 64 bit... " >&6; }
-  if test "$cross_compiling" = yes
-then :
-  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <stdint.h>
-int
-main (void)
-{
-return sizeof (uint64_t) != 8;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-     enable_standard_types=no
-     enable_long_types=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking double is 64 bit" >&5
-printf %s "checking double is 64 bit... " >&6; }
-  if test "$cross_compiling" = yes
-then :
-  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main (void)
-{
-return sizeof (double) != 8;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-     enable_long_types=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking long double has 64-bit mantissa" >&5
-printf %s "checking long double has 64-bit mantissa... " >&6; }
-  if test "$cross_compiling" = yes
-then :
-  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <float.h>
-int
-main (void)
-{
-return LDBL_MANT_DIG != 64;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-
-printf "%s\n" "#define HAVE_FLT80 1" >>confdefs.h
-
-else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-fi
-
-if test "x$enable_standard_types" = "xno"; then
-  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "stop -- unexpected lengths for int and/or double and/or uint64_t
-See \`config.log' for more details" "$LINENO" 5; }
-fi
-
-if test "x$enable_long_types" = "xyes"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking 64-bit long long int is available" >&5
-printf %s "checking 64-bit long long int is available... " >&6; }
-  if test "$cross_compiling" = yes
-then :
-  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main (void)
-{
-return sizeof (long long) != 8;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-   enable_long_types=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking 64-bit long long unsigned is available" >&5
-printf %s "checking 64-bit long long unsigned is available... " >&6; }
-  if test "$cross_compiling" = yes
-then :
-  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main (void)
-{
-return sizeof (long long unsigned) != 8;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-     enable_long_types=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking __float128 is available" >&5
-printf %s "checking __float128 is available... " >&6; }
-  if test "$cross_compiling" = yes
-then :
-  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main (void)
-{
-return sizeof (__float128) != 16;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-     enable_long_types=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking __complex128 is available" >&5
-printf %s "checking __complex128 is available... " >&6; }
-  if test "$cross_compiling" = yes
-then :
-  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-typedef _Complex float __attribute__((mode(TC))) __complex128;
-int
-main (void)
-{
-return sizeof (__complex128) != 32;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"
-then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-     enable_long_types=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-fi
 
 if test "x$enable_long_types" = "xyes"; then
   if test "x$enable_quadmath" = "xyes"; then