-dnl Host character set probe.
-dnl The EBCDIC values match the table in config/i370/i370.c;
-dnl there are other versions of EBCDIC but GCC won't work with them.
-dnl
-AC_DEFUN([gcc_AC_C_CHARSET],
-[AC_CACHE_CHECK(execution character set, ac_cv_c_charset,
- [AC_EGREP_CPP(ASCII,
-[#if '\n' == 0x0A && ' ' == 0x20 && '0' == 0x30 \
- && 'A' == 0x41 && 'a' == 0x61 && '!' == 0x21
-ASCII
-#endif], ac_cv_c_charset=ASCII)
- if test x${ac_cv_c_charset+set} != xset; then
- AC_EGREP_CPP(EBCDIC,
-[#if '\n' == 0x15 && ' ' == 0x40 && '0' == 0xF0 \
- && 'A' == 0xC1 && 'a' == 0x81 && '!' == 0x5A
-EBCDIC
-#endif], ac_cv_c_charset=EBCDIC)
- fi
- if test x${ac_cv_c_charset+set} != xset; then
- ac_cv_c_charset=unknown
- fi])
-if test $ac_cv_c_charset = unknown; then
- AC_MSG_ERROR([*** Cannot determine host character set.])
-elif test $ac_cv_c_charset = EBCDIC; then
- AC_DEFINE(HOST_EBCDIC, 1,
- [Define if the host execution character set is EBCDIC.])
-fi])
-
-dnl Utility macro used by next two tests.
-dnl AC_EXAMINE_OBJECT(C source code,
-dnl commands examining object file,
-dnl [commands to run if compile failed]):
-dnl
-dnl Compile the source code to an object file; then convert it into a
-dnl printable representation. All unprintable characters and
-dnl asterisks (*) are replaced by dots (.). All white space is
-dnl deleted. Newlines (ASCII 0x10) in the input are preserved in the
-dnl output, but runs of newlines are compressed to a single newline.
-dnl Finally, line breaks are forcibly inserted so that no line is
-dnl longer than 80 columns and the file ends with a newline. The
-dnl result of all this processing is in the file conftest.dmp, which
-dnl may be examined by the commands in the second argument.
-dnl
-AC_DEFUN([gcc_AC_EXAMINE_OBJECT],
-[AC_LANG_SAVE
-AC_LANG_C
-dnl Next bit cribbed from AC_TRY_COMPILE.
-cat > conftest.$ac_ext <<EOF
-[#line __oline__ "configure"
-#include "confdefs.h"
-$1
-]EOF
-if AC_TRY_EVAL(ac_compile); then
- od -c conftest.o |
- sed ['s/^[0-7]*[ ]*/ /
- s/\*/./g
- s/ \\n/*/g
- s/ [0-9][0-9][0-9]/./g
- s/ \\[^ ]/./g'] |
- tr -d '
- ' | tr -s '*' '
-' | fold | sed '$a\
-' > conftest.dmp
- $2
-ifelse($3, , , else
- $3
-)dnl
-fi
-rm -rf conftest*
-AC_LANG_RESTORE])
-
-dnl Host endianness probe.
-dnl This tests byte-within-word endianness. GCC actually needs
-dnl to know word-within-larger-object endianness. They are the
-dnl same on all presently supported hosts.
-dnl Differs from AC_C_BIGENDIAN in that it does not require
-dnl running a program on the host, and it defines the macro we
-dnl want to see.
-dnl
-AC_DEFUN([gcc_AC_C_COMPILE_ENDIAN],
-[AC_CACHE_CHECK(byte ordering, ac_cv_c_compile_endian,
-[ac_cv_c_compile_endian=unknown
-gcc_AC_EXAMINE_OBJECT([
-#ifdef HAVE_LIMITS_H
-# include <limits.h>
-#endif
-/* This structure must have no internal padding. */
- struct {
- char prefix[sizeof "\nendian:" - 1];
- short word;
- char postfix[2];
- } tester = {
- "\nendian:",
-#if SIZEOF_SHORT == 4
- ('A' << (CHAR_BIT * 3)) | ('B' << (CHAR_BIT * 2)) |
-#endif
- ('A' << CHAR_BIT) | 'B',
- 'X', '\n'
-};],
- [if grep 'endian:AB' conftest.dmp >/dev/null 2>&1; then
- ac_cv_c_compile_endian=big-endian
- elif grep 'endian:BA' conftest.dmp >/dev/null 2>&1; then
- ac_cv_c_compile_endian=little-endian
- fi])
-])
-if test $ac_cv_c_compile_endian = unknown; then
- AC_MSG_ERROR([*** unable to determine endianness])
-elif test $ac_cv_c_compile_endian = big-endian; then
- AC_DEFINE(HOST_WORDS_BIG_ENDIAN, 1,
- [Define if the host machine stores words of multi-word integers in
- big-endian order.])
-fi
-])
-
-dnl Floating point format probe.
-dnl The basic concept is the same as the above: grep the object
-dnl file for an interesting string. We have to watch out for
-dnl rounding changing the values in the object, however; this is
-dnl handled by ignoring the least significant byte of the float.
-dnl
-dnl Does not know about VAX G-float or C4x idiosyncratic format.
-dnl It does know about PDP-10 idiosyncratic format, but this is
-dnl not presently supported by GCC. S/390 "binary floating point"
-dnl is in fact IEEE (but maybe we should have that in EBCDIC as well
-dnl as ASCII?)
-dnl
-AC_DEFUN([gcc_AC_C_FLOAT_FORMAT],
-[AC_CACHE_CHECK(floating point format, ac_cv_c_float_format,
-[gcc_AC_EXAMINE_OBJECT(
-[/* This will not work unless sizeof(double) == 8. */
-extern char sizeof_double_must_be_8 [sizeof(double) == 8 ? 1 : -1];
-
-/* This structure must have no internal padding. */
-struct possibility {
- char prefix[8];
- double candidate;
- char postfix[8];
-};
-
-#define C(cand) { "\nformat:", cand, ":tamrof\n" }
-struct possibility table [] =
-{
- C( 3.25724264705901305206e+01), /* @@IEEEFP - IEEE 754 */
- C( 3.53802595280598432000e+18), /* D__float - VAX */
- C( 5.32201830133125317057e-19), /* D.PDP-10 - PDP-10 - the dot is 0x13a */
- C( 1.77977764695171661377e+10), /* IBMHEXFP - s/390 format, ascii */
- C(-5.22995989424860458374e+10) /* IBMHEXFP - s/390 format, EBCDIC */
-};],
- [if grep 'format:.@IEEEF.:tamrof' conftest.dmp >/dev/null 2>&1; then
- ac_cv_c_float_format='IEEE (big-endian)'
- elif grep 'format:.I@@PFE.:tamrof' conftest.dmp >/dev/null 2>&1; then
- ac_cv_c_float_format='IEEE (big-endian)'
- elif grep 'format:.FEEEI@.:tamrof' conftest.dmp >/dev/null 2>&1; then
- ac_cv_c_float_format='IEEE (little-endian)'
- elif grep 'format:.EFP@@I.:tamrof' conftest.dmp >/dev/null 2>&1; then
- ac_cv_c_float_format='IEEE (little-endian)'
- elif grep 'format:.__floa.:tamrof' conftest.dmp >/dev/null 2>&1; then
- ac_cv_c_float_format='VAX D-float'
- elif grep 'format:..PDP-1.:tamrof' conftest.dmp >/dev/null 2>&1; then
- ac_cv_c_float_format='PDP-10'
- elif grep 'format:.BMHEXF.:tamrof' conftest.dmp >/dev/null 2>&1; then
- ac_cv_c_float_format='IBM 370 hex'
- else
- AC_MSG_ERROR(Unknown floating point format)
- fi],
- [AC_MSG_ERROR(compile failed)])
-])
-# IEEE is the default format. If the float endianness isn't the same
-# as the integer endianness, we have to set FLOAT_WORDS_BIG_ENDIAN
-# (which is a tristate: yes, no, default). This is only an issue with
-# IEEE; the other formats are only supported by a few machines each,
-# all with the same endianness.
-format=
-fbigend=
-case $ac_cv_c_float_format in
- 'IEEE (big-endian)' )
- if test $ac_cv_c_compile_endian = little-endian; then
- fbigend=1
- fi
- ;;
- 'IEEE (little-endian)' )
- if test $ac_cv_c_compile_endian = big-endian; then
- fbigend=0
- fi
- ;;
- 'VAX D-float' )
- format=VAX_FLOAT_FORMAT
- ;;
- 'PDP-10' )
- format=PDP10_FLOAT_FORMAT
- ;;
- 'IBM 370 hex' )
- format=IBM_FLOAT_FORMAT
- ;;
-esac
-if test -n "$format"; then
- AC_DEFINE_UNQUOTED(HOST_FLOAT_FORMAT, $format,
- [Define to the floating point format of the host machine, if not IEEE.])
-fi
-if test -n "$fbigend"; then
- AC_DEFINE_UNQUOTED(HOST_FLOAT_WORDS_BIG_ENDIAN, $fbigend,
- [Define to 1 if the host machine stores floating point numbers in
- memory with the word containing the sign bit at the lowest address,
- or to 0 if it does it the other way around.
-
- This macro should not be defined if the ordering is the same as for
- multi-word integers.])
-fi
-])
-
-#serial AM2
-
-dnl From Bruno Haible.
-
-AC_DEFUN([AM_ICONV],
-[
- dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
- dnl those with the standalone portable GNU libiconv installed).
-
- am_cv_lib_iconv_ldpath=
- AC_ARG_WITH([libiconv-prefix],
-[ --with-libiconv-prefix=DIR search for libiconv in DIR/include and DIR/lib], [
- for dir in `echo "$withval" | tr : ' '`; do
- if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi
- if test -d $dir/lib; then am_cv_lib_iconv_ldpath="-L$dir/lib"; fi
- done
- ])
-
- AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
- am_cv_func_iconv="no, consider installing GNU libiconv"
- am_cv_lib_iconv=no
- AC_TRY_LINK([#include <stdlib.h>
-#include <iconv.h>],
- [iconv_t cd = iconv_open("","");
- iconv(cd,NULL,NULL,NULL,NULL);
- iconv_close(cd);],
- am_cv_func_iconv=yes)
- if test "$am_cv_func_iconv" != yes; then
- am_save_LIBS="$LIBS"
- LIBS="$LIBS $am_cv_libiconv_ldpath -liconv"
- AC_TRY_LINK([#include <stdlib.h>
-#include <iconv.h>],
- [iconv_t cd = iconv_open("","");
- iconv(cd,NULL,NULL,NULL,NULL);
- iconv_close(cd);],
- am_cv_lib_iconv=yes
- am_cv_func_iconv=yes)
- LIBS="$am_save_LIBS"
- fi
- ])
- if test "$am_cv_func_iconv" = yes; then
- AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
- AC_MSG_CHECKING([for iconv declaration])
- AC_CACHE_VAL(am_cv_proto_iconv, [
- AC_TRY_COMPILE([
-#include <stdlib.h>
-#include <iconv.h>
-extern
-#ifdef __cplusplus
-"C"
-#endif
-#if defined(__STDC__) || defined(__cplusplus)
-size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
-#else
-size_t iconv();
-#endif
-], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
- am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
- am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
- AC_MSG_RESULT([$]{ac_t:-
- }[$]am_cv_proto_iconv)
- AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
- [Define as const if the declaration of iconv() needs const.])
- fi
- LIBICONV=
- if test "$am_cv_lib_iconv" = yes; then
- LIBICONV="$am_cv_lib_iconv_ldpath -liconv"
- fi
- AC_SUBST(LIBICONV)
-])
-
-### Gettext macros begin here.
-### Changes for GCC marked by 'dnl GCC LOCAL'.
-### Note iconv.m4 appears above, as it's used for other reasons.
-
-#serial AM1
-