aclocal.m4 (gcc_AC_EXAMINE_OBJECT): New utility macro which handles the gory details of converting an object file...
* aclocal.m4 (gcc_AC_EXAMINE_OBJECT): New utility macro which handles the gory details of converting an object file into something that's safe to grep. (gcc_AC_C_COMPILE_BIGENDIAN): Rename to gcc_AC_C_COMPILE_ENDIAN. Use gcc_AC_EXAMINE_OBJECT. Put newlines at either end of the string we're looking for. Make 'checking ...' message less stilted. (gcc_AC_C_FLOAT_FORMAT): Use gcc_AC_EXAMINE_OBJECT. Handle ARM in-memory layout and its hypothetical converse. Don't define HOST_FLOAT_WORDS_BIG_ENDIAN unless it's different from HOST_WORDS_BIG_ENDIAN. * configure.in: Adjust for renamed macro. Move gcc_AC_C_FLOAT_FORMAT below gcc_AC_C_COMPILE_ENDIAN. * configure, config.in: Regenerate. From-SVN: r40562
This commit is contained in:
Zack Weinberg
parent
d577781c36
commit
2d6eb5bf63
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@ -1,3 +1,21 @@
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2001-03-16 Zack Weinberg <zackw@stanford.edu>
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* aclocal.m4 (gcc_AC_EXAMINE_OBJECT): New utility macro which
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handles the gory details of converting an object file into
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something that's safe to grep.
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(gcc_AC_C_COMPILE_BIGENDIAN): Rename to
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gcc_AC_C_COMPILE_ENDIAN. Use gcc_AC_EXAMINE_OBJECT. Put
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newlines at either end of the string we're looking for.
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Make 'checking ...' message less stilted.
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(gcc_AC_C_FLOAT_FORMAT): Use gcc_AC_EXAMINE_OBJECT. Handle
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ARM in-memory layout and its hypothetical converse. Don't
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define HOST_FLOAT_WORDS_BIG_ENDIAN unless it's different from
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HOST_WORDS_BIG_ENDIAN.
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* configure.in: Adjust for renamed macro. Move
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gcc_AC_C_FLOAT_FORMAT below gcc_AC_C_COMPILE_ENDIAN.
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* configure, config.in: Regenerate.
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2001-03-16 Laurynas Biveinis <lauras@softhome.net>
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* fixinc/Makefile.in: Set SHELL.
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@ -6,12 +24,12 @@
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* fixinc/fixincl.c (fix_with_system): Quote file names before
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passing them to shell.
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2001-03-16 Laurynas Biveinis <lauras@softhome.net>
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* Makefile.in: Use fix-header$(build_exeext) instead
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of fix-header.
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2001-03-16 Richard Henderson <rth@redhat.com>
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* dwarf2out.c: Revert most of 2000-11-25 and 2001-01-24 changes.
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@ -88,9 +106,9 @@ Fri Mar 16 14:47:57 CET 2001 Jan Hubicka <jh@suse.cz>
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2001-03-15 Steve Ellcey <sje@cup.hp.com>
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* config.gcc (ia64*-*-hpux*): New case.
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* config/ia64/hpux.h: New file for HP-UX support.
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* config/ia64/t-hpux: New file for HP-UX support.
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* config.gcc (ia64*-*-hpux*): New case.
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* config/ia64/hpux.h: New file for HP-UX support.
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* config/ia64/t-hpux: New file for HP-UX support.
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2001-03-16 Bruce Korb <bkorb@gnu.org>, Alexandre Oliva <aoliva@redhat.com>
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@ -240,7 +258,7 @@ Thu Mar 15 11:24:29 EST 2001 John Wehle (john@feith.com)
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(rest_of_decl_compilation): Likewise.
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* tree.c (simple_cst_equal): Likewise.
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* objc/objc-act.c (generate_static_references): Likewise.
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2001-03-14 Zack Weinberg <zackw@stanford.edu>
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* aclocal.m4 (gcc_AC_C_CHARSET, gcc_AC_C_COMPILE_BIGENDIAN,
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@ -1258,6 +1258,49 @@ elif test $ac_cv_c_charset = EBCDIC; then
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[Define if the host execution character set is EBCDIC.])
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fi])
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dnl Utility macro used by next two tests.
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dnl AC_EXAMINE_OBJECT(C source code,
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dnl commands examining object file,
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dnl [commands to run if compile failed]):
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dnl
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dnl Compile the source code to an object file; then convert it into a
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dnl printable representation. All unprintable characters and
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dnl asterisks (*) are replaced by dots (.). All white space is
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dnl deleted. Newlines (ASCII 0x10) in the input are preserved in the
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dnl output, but runs of newlines are compressed to a single newline.
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dnl Finally, line breaks are forcibly inserted so that no line is
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dnl longer than 80 columns and the file ends with a newline. The
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dnl result of all this processing is in the file conftest.dmp, which
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dnl may be examined by the commands in the second argument.
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dnl
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AC_DEFUN([gcc_AC_EXAMINE_OBJECT],
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[AC_LANG_SAVE
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AC_LANG_C
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dnl Next bit cribbed from AC_TRY_COMPILE.
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cat > conftest.$ac_ext <<EOF
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[#line __oline__ "configure"
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#include "confdefs.h"
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$1
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]EOF
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if AC_TRY_EVAL(ac_compile); then
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od -c conftest.o |
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sed ['s/^[0-7]*[ ]*//
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s/\*/./g
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s/ \\n/*/g
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s/ [0-9][0-9][0-9]/./g
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s/ \\[^ ]/./g'] |
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tr -d '
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' | tr -s '*' '
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' | fold | sed '$a\
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' > conftest.dmp
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$2
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ifelse($3, , , else
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$3
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)dnl
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fi
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rm -rf conftest*
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AC_LANG_RESTORE])
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dnl Host endianness probe.
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dnl This tests byte-within-word endianness. GCC actually needs
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dnl to know word-within-larger-object endianness. They are the
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@ -1266,39 +1309,35 @@ dnl Differs from AC_C_BIGENDIAN in that it does not require
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dnl running a program on the host, and it defines the macro we
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dnl want to see.
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dnl
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AC_DEFUN([gcc_AC_C_COMPILE_BIGENDIAN],
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[AC_CACHE_CHECK(whether byte ordering is bigendian, ac_cv_c_compile_bigendian,
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[dnl The extra quote protects the [] in the structure definition.
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cat >conftest.$ac_ext <<EOF
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[#include "confdefs.h"
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AC_DEFUN([gcc_AC_C_COMPILE_ENDIAN],
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[AC_CACHE_CHECK(byte ordering, ac_cv_c_compile_endian,
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[ac_cv_c_compile_endian=unknown
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gcc_AC_EXAMINE_OBJECT([
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#ifdef HAVE_LIMITS_H
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#include <limits.h>
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# include <limits.h>
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#endif
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/* This structure must have no internal padding. */
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struct {
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char prefix[sizeof "endian::" - 1];
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char prefix[sizeof "\nendian:" - 1];
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short word;
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char postfix[2];
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} tester = {
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"endian::",
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"\nendian:",
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#if SIZEOF_SHORT == 4
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('A' << (CHAR_BIT * 3)) | ('B' << (CHAR_BIT * 2)) |
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#endif
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('A' << CHAR_BIT) | 'B'
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};]
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EOF
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ac_cv_c_compile_bigendian=unknown
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if AC_TRY_EVAL(ac_compile); then
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if grep 'endian::AB' conftest.o >/dev/null 2>&1; then
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ac_cv_c_compile_bigendian=yes
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elif grep 'endian::BA' conftest.o >/dev/null 2>&1; then
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ac_cv_c_compile_bigendian=no
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fi
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fi
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if test $ac_cv_c_compile_bigendian = unknown; then
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('A' << CHAR_BIT) | 'B',
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'X', '\n'
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};],
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[if grep 'endian:AB' conftest.dmp >/dev/null 2>&1; then
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ac_cv_c_compile_endian=big-endian
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elif grep 'endian:BA' conftest.dmp >/dev/null 2>&1; then
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ac_cv_c_compile_endian=little-endian
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fi])
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])
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if test $ac_cv_c_compile_endian = unknown; then
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AC_MSG_ERROR([*** unable to determine endianness])
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fi
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rm -rf conftest*])
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if test $ac_cv_c_compile_bigendian = yes; then
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elif test $ac_cv_c_compile_endian = big-endian; then
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AC_DEFINE(HOST_WORDS_BIG_ENDIAN, 1,
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[Define if the host machine stores words of multi-word integers in
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big-endian order.])
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@ -1319,10 +1358,7 @@ dnl as ASCII?)
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dnl
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AC_DEFUN([gcc_AC_C_FLOAT_FORMAT],
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[AC_CACHE_CHECK(floating point format, ac_cv_c_float_format,
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[# [AC_TRY_COMPILE] will delete the object file before we get a
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# chance to look at it.
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dnl The extra quote protects the [] instances in the code.
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cat >conftest.$ac_ext <<EOF
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[gcc_AC_EXAMINE_OBJECT(
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[/* This will not work unless sizeof(double) == 8. */
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extern char sizeof_double_must_be_8 [sizeof(double) == 8 ? 1 : -1];
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@ -1333,7 +1369,7 @@ struct possibility {
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char postfix[8];
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};
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#define C(cand) { "format::", cand, "::tamrof" }
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#define C(cand) { "\nformat:", cand, ":tamrof\n" }
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struct possibility table [] =
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{
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C( 3.25724264705901305206e+01), /* @@IEEEFP - IEEE 754 */
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@ -1341,35 +1377,43 @@ struct possibility table [] =
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C( 5.32201830133125317057e-19), /* D.PDP-10 - PDP-10 - the dot is 0x13a */
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C( 1.77977764695171661377e+10), /* IBMHEXFP - s/390 format, ascii */
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C(-5.22995989424860458374e+10) /* IBMHEXFP - s/390 format, EBCDIC */
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};]
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EOF
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if AC_TRY_EVAL(ac_compile); then
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if grep 'format::.@IEEEF.::tamrof' conftest.o >/dev/null 2>&1; then
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};],
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[if grep 'format:.@IEEEF.:tamrof' conftest.dmp >/dev/null 2>&1; then
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ac_cv_c_float_format='IEEE (big-endian)'
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elif grep 'format::.FEEEI@.::tamrof' conftest.o >/dev/null 2>&1; then
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elif grep 'format:.I@@PFE.:tamrof' conftest.dmp >/dev/null 2>&1; then
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ac_cv_c_float_format='IEEE (big-endian)'
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elif grep 'format:.FEEEI@.:tamrof' conftest.dmp >/dev/null 2>&1; then
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ac_cv_c_float_format='IEEE (little-endian)'
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elif grep 'format::.__floa.::tamrof' conftest.o >/dev/null 2>&1; then
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elif grep 'format:.EFP@@I.:tamrof' conftest.dmp >/dev/null 2>&1; then
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ac_cv_c_float_format='IEEE (little-endian)'
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elif grep 'format:.__floa.:tamrof' conftest.dmp >/dev/null 2>&1; then
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ac_cv_c_float_format='VAX D-float'
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elif grep 'format::..PDP-1.::tamrof' conftest.o >/dev/null 2>&1; then
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elif grep 'format:..PDP-1.:tamrof' conftest.dmp >/dev/null 2>&1; then
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ac_cv_c_float_format='PDP-10'
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elif grep 'format::.BMHEXF.::tamrof' conftest.o >/dev/null 2>&1; then
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elif grep 'format:.BMHEXF.:tamrof' conftest.dmp >/dev/null 2>&1; then
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ac_cv_c_float_format='IBM 370 hex'
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else
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AC_MSG_ERROR(Unknown floating point format)
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fi
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else
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AC_MSG_ERROR(compile failed)
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fi
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rm -rf conftest*])
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fi],
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[AC_MSG_ERROR(compile failed)])
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])
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# IEEE is the default format. If the float endianness isn't the same
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# as the integer endianness, we have to set FLOAT_WORDS_BIG_ENDIAN
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# (which is a tristate: yes, no, default). This is only an issue with
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# IEEE; the other formats are only supported by a few machines each,
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# all with the same endianness.
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format=
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bigend=
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fbigend=
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case $ac_cv_c_float_format in
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'IEEE (big-endian)' )
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# IEEE is the default, but define HOST_FLOAT_WORDS_BIG_ENDIAN
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# in case it's different from HOST_WORDS_BIG_ENDIAN.
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bigend=yes
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if test $ac_cv_c_compile_endian = little-endian; then
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fbigend=1
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fi
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;;
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'IEEE (little-endian)' )
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if test $ac_cv_c_compile_endian = big-endian; then
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fbigend=0
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fi
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;;
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'VAX D-float' )
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format=VAX_FLOAT_FORMAT
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@ -1385,12 +1429,13 @@ if test -n "$format"; then
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AC_DEFINE_UNQUOTED(HOST_FLOAT_FORMAT, $format,
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[Define to the floating point format of the host machine, if not IEEE.])
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fi
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if test -n "$bigend"; then
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AC_DEFINE(HOST_FLOAT_WORDS_BIG_ENDIAN, 1,
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if test -n "$fbigend"; then
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AC_DEFINE_UNQUOTED(HOST_FLOAT_WORDS_BIG_ENDIAN, $fbigend,
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[Define to 1 if the host machine stores floating point numbers in
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memory with the word containing the sign bit at the lowest address.
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memory with the word containing the sign bit at the lowest address,
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or to 0 if it does it the other way around.
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This macro need not be defined if the ordering is the same as for
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This macro should not be defined if the ordering is the same as for
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multi-word integers.])
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fi
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])
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@ -320,16 +320,6 @@
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/* Define if the host execution character set is EBCDIC. */
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#undef HOST_EBCDIC
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/* Define to the floating point format of the host machine, if not IEEE. */
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#undef HOST_FLOAT_FORMAT
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/* Define to 1 if the host machine stores floating point numbers in
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memory with the word containing the sign bit at the lowest address.
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This macro need not be defined if the ordering is the same as for
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multi-word integers. */
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#undef HOST_FLOAT_WORDS_BIG_ENDIAN
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/* Always define this when using the GNU C Library */
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#undef _GNU_SOURCE
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@ -343,6 +333,17 @@
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big-endian order. */
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#undef HOST_WORDS_BIG_ENDIAN
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/* Define to the floating point format of the host machine, if not IEEE. */
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#undef HOST_FLOAT_FORMAT
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/* Define to 1 if the host machine stores floating point numbers in
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memory with the word containing the sign bit at the lowest address,
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or to 0 if it does it the other way around.
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This macro should not be defined if the ordering is the same as for
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multi-word integers. */
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#undef HOST_FLOAT_WORDS_BIG_ENDIAN
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/* Define if you have a working <inttypes.h> header file. */
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#undef HAVE_INTTYPES_H
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File diff suppressed because it is too large
Load Diff
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@ -379,7 +379,6 @@ if test $ac_cv_c___int64 = yes; then
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fi
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gcc_AC_C_CHARSET
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gcc_AC_C_FLOAT_FORMAT
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# If the native compiler is GCC, we can enable warnings even in stage1.
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# That's useful for people building cross-compilers, or just running a
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@ -464,7 +463,8 @@ AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
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# These tests can't be done till we know if we have limits.h.
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gcc_AC_C_CHAR_BIT
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gcc_AC_C_COMPILE_BIGENDIAN
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gcc_AC_C_COMPILE_ENDIAN
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gcc_AC_C_FLOAT_FORMAT
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# See if GNAT has been installed
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AC_CHECK_PROG(have_gnat, gnatbind, yes, no)
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Loading…
Reference in New Issue