* doc/sdccman.lyx: enhanced paragraph about bankswitching for mcs51

[fw/sdcc] / configure.in

diff --git a/configure.in b/configure.in
old mode 100755 (executable)
new mode 100644 (file)
index a6a969b..735fafb
--- a/configure.in
+++ b/configure.in
@@ -1,7 +1,7 @@
 #!/bin/sh
 
-AC_PREREQ(2.54)
-AC_INIT
+AC_PREREQ(2.60)
+AC_INIT(.version)
 AC_CONFIG_SRCDIR([Makefile.in])
 AC_CONFIG_HEADER(sdccconf.h:sdccconf_in.h)
 
@@ -9,11 +9,14 @@ AC_PROG_AWK
 
 AC_MSG_CHECKING(version of the package)
 if test -f ${srcdir}/.version; then
-  VERSION=`cat ${srcdir}/.version`
+  { read VERSION; } < ${srcdir}/.version
+  AC_MSG_RESULT($VERSION)
 elif test -f ../.version; then
-  VERSION=`cat ../.version`
+  { read VERSION; } < ../.version
+  AC_MSG_RESULT($VERSION)
 else
   VERSION="0.0.0"
+  AC_MSG_RESULT(unknown using 0.0.0)
 fi
 VERSIONHI=`echo $VERSION|$AWK 'BEGIN {FS="."} {print $1}'`
 VERSIONLO=`echo $VERSION|$AWK 'BEGIN {FS="."} {print $2}'`
@@ -41,13 +44,18 @@ AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_INSTALL
 AC_PROG_RANLIB
-AC_PROG_LEX
-AC_PROG_YACC
 AC_CHECK_PROG(AUTOCONF, autoconf, autoconf, :)
 AC_CHECK_PROG(STRIP, strip, strip, :)
 AC_CHECK_PROG(AS, as, as, :)
 AC_CHECK_PROG(CP, cp, cp, :)
 
+dnl Don't use AC_PROG_LEX
+dnl LEXLIB is not useful in gcc.
+AC_CHECK_PROGS(LEX, flex lex, :)
+
+dnl Don't use AC_PROG_YACC
+AC_CHECK_PROGS(YACC, 'bison -y' byacc yacc, :)
+
 AC_DEFUN(SDCC_REQUIRE_PROG,
 [if test "$1" = ":"; then
   AC_MSG_ERROR([Cannot find required program $2.])
@@ -55,7 +63,7 @@ AC_DEFUN(SDCC_REQUIRE_PROG,
 ])
 
 SDCC_REQUIRE_PROG($YACC, bison)
-SDCC_REQUIRE_PROG($LEX, lex)
+SDCC_REQUIRE_PROG($LEX, flex)
 
 AC_LANG_C
 
@@ -378,7 +386,78 @@ AC_DEFINE_UNQUOTED(TYPE_UBYTE,  unsigned $TYPE_CHAR)
 AC_DEFINE_UNQUOTED(TYPE_UWORD,  unsigned $TYPE_WORD)
 AC_DEFINE_UNQUOTED(TYPE_UDWORD, unsigned $TYPE_DWORD)
 
-AC_C_BIGENDIAN
+
+# SDCC_BUILD_BIGENDIAN ([ACTION-IF-TRUE], [ACTION-IF-FALSE], [ACTION-IF-UNKNOWN])
+# -------------------------------------------------------------------------
+AC_DEFUN([SDCC_BUILD_BIGENDIAN],
+[AC_CACHE_CHECK(whether host machine byte ordering is bigendian, sdcc_cv_build_bigendian,
+[# See if sys/param.h defines the BYTE_ORDER macro.
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <sys/types.h>
+#include <sys/param.h>
+],
+[#if  ! (defined BYTE_ORDER && defined BIG_ENDIAN && defined LITTLE_ENDIAN \
+       && BYTE_ORDER && BIG_ENDIAN && LITTLE_ENDIAN)
+ bogus endian macros
+#endif
+])],
+[# It does; now see whether it defined to BIG_ENDIAN or not.
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <sys/types.h>
+#include <sys/param.h>
+], [#if BYTE_ORDER != BIG_ENDIAN
+ not big endian
+#endif
+])], [sdcc_cv_build_bigendian=yes], [sdcc_cv_build_bigendian=no])],
+[# It does not; compile a test program.
+AC_RUN_IFELSE(
+[AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], [[
+  /* Are we little or big endian?  From Harbison&Steele.  */
+  union
+  {
+    long int l;
+    char c[sizeof (long int)];
+  } u;
+  u.l = 1;
+  return u.c[sizeof (long int) - 1] == 1;
+]])],
+             [sdcc_cv_build_bigendian=no],
+             [sdcc_cv_build_bigendian=yes],
+[# try to guess the endianness by grepping values into an object file
+  sdcc_cv_build_bigendian=unknown
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+[[short int ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+short int ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+void _ascii () { char *s = (char *) ascii_mm; s = (char *) ascii_ii; }
+short int ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+short int ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+void _ebcdic () { char *s = (char *) ebcdic_mm; s = (char *) ebcdic_ii; }]],
+[[ _ascii (); _ebcdic (); ]])],
+[if grep BIGenDianSyS conftest.$ac_objext >/dev/null ; then
+  sdcc_cv_build_bigendian=yes
+fi
+if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then
+  if test "$sdcc_cv_build_bigendian" = unknown; then
+    sdcc_cv_build_bigendian=no
+  else
+    # finding both strings is unlikely to happen, but who knows?
+    sdcc_cv_build_bigendian=unknown
+  fi
+fi])])])])
+case $sdcc_cv_build_bigendian in
+  yes)
+    m4_default([$1],
+      [AC_DEFINE([BUILD_WORDS_BIGENDIAN], 1,
+       [Define to 1 if your processor stores words with the most significant
+        byte first (like Motorola and SPARC, unlike Intel and VAX).])]) ;;
+  no)
+    $2 ;;
+  *)
+    m4_default([$3],
+      [AC_MSG_ERROR([unknown endianness
+presetting sdcc_cv_build_bigendian=no (or yes) will help])]) ;;
+esac
+])# SDCC_BUILD_BIGENDIAN
+
+SDCC_BUILD_BIGENDIAN
 
 # Set standard installation paths
 # ===========================================================================
@@ -641,7 +720,8 @@ fi
 
 if test $OPT_DISABLE_HC08 = 0; then
   AC_CONFIG_FILES([src/hc08/Makefile
-                   as/hc08/Makefile])
+                   as/hc08/Makefile
+                   as/link/hc08/Makefile])
   test $OPT_DISABLE_DEVICE_LIB = 0 && AC_CONFIG_FILES([device/lib/hc08/Makefile])
 fi
 
@@ -724,6 +804,7 @@ sdcc ${VERSION} is now configured for
     ds400               ${enable_ds400_port}
     gbz80               ${enable_gbz80_port}
     hc08                ${enable_hc08_port}
+    mcs51               ${enable_mcs51_port}
     pic                 ${enable_pic_port}
     pic16               ${enable_pic16_port}
     xa51                ${enable_xa51_port}
@@ -745,6 +826,7 @@ sdcc ${VERSION} is now configured for
 
     prefix:             ${prefix}
     datadir:            ${datadir}
+    datarootdir:        ${datarootdir}
 
   Search paths (incomplete, see manual for all search paths):
     binary files:       \$SDCC_HOME${binPath}