-#
-# Extra autoconf macros for the Glasgow fptools
-#
+dnl $Id: aclocal.m4,v 1.28 1998/09/29 17:30:09 sof Exp $
+dnl
+dnl Extra autoconf macros for the Glasgow fptools
+dnl
+dnl To be a good autoconf citizen, names of local macros have
+dnl prefixed with FPTOOLS_ to ensure we don't clash
+dnl with any pre-supplied autoconf ones.
-#
-# Has timezone the type time_t or long (HP-UX 10.20 apparently
-# has `long'..)
-#
-AC_DEFUN(AC_TYPE_TIMEZONE,
-[AC_CACHE_CHECK([type of timezone], ac_cv_type_timezone,
+dnl
+dnl Has timezone the type time_t or long (HP-UX 10.20 apparently
+dnl has `long'..)
+dnl
+AC_DEFUN(FPTOOLS_TYPE_TIMEZONE,
+[AC_CACHE_CHECK([type of timezone], fptools_cv_type_timezone,
[AC_TRY_COMPILE([#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
extern time_t timezone;
],
-[int i;], ac_cv_type_timezone=time_t, ac_cv_type_timezone=long)])
-AC_DEFINE_UNQUOTED(TYPE_TIMEZONE, $ac_cv_type_timezone)
+[int i;], fptools_cv_type_timezone=time_t, fptools_cv_type_timezone=long)])
+AC_DEFINE_UNQUOTED(TYPE_TIMEZONE, $fptools_cv_type_timezone)
])
-#
-# Is altzone available?
-#
-AC_DEFUN(AC_ALTZONE,
-[AC_CACHE_CHECK([altzone], ac_cv_altzone,
+dnl *** Is altzone available? ***
+dnl
+AC_DEFUN(FPTOOLS_ALTZONE,
+[AC_CACHE_CHECK([altzone], fptools_cv_altzone,
[AC_TRY_LINK([#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
# endif
#endif
], [return altzone;],
-ac_cv_altzone=yes, ac_cv_altzone=no)])
-if test "$ac_cv_altzone" = yes; then
+fptools_cv_altzone=yes, fptools_cv_altzone=no)])
+if test "$fptools_cv_altzone" = yes; then
AC_DEFINE(HAVE_ALTZONE)
fi
])
-#
dnl ** check for leading underscores in symbol names
-#
-# Test for determining whether symbol names have a leading
-# underscore.
-#
-# We assume that they _haven't_ if anything goes wrong.
-#
-AC_DEFUN(AC_UNDERSCORE,
+dnl
+dnl Test for determining whether symbol names have a leading
+dnl underscore.
+dnl
+dnl We assume that they _haven't_ if anything goes wrong.
+dnl
+AC_DEFUN(FPTOOLS_UNDERSCORE,
[AC_CHECK_LIB(elf, nlist, LIBS="-lelf $LIBS")dnl
-AC_CACHE_CHECK([leading underscore in symbol names], ac_cv_lead_uscore,
-#
-# Hack!: nlist() under Digital UNIX insist on there being an _,
-# but symbol table listings show none. What is going on here?!?
-#
+AC_CACHE_CHECK([leading underscore in symbol names], fptools_cv_lead_uscore,
+
+dnl
+dnl Hack!: nlist() under Digital UNIX insist on there being an _,
+dnl but symbol table listings shows none. What is going on here?!?
+dnl
changequote(<<, >>)dnl
<<
case $HostPlatform in
-alpha-dec-osf*) ac_cv_lead_uscore='no';;
+alpha-dec-osf*) fptools_cv_lead_uscore='no';;
+*cygwin32) fptools_cv_lead_uscore='yes';;
*) >>
changequote([, ])dnl
AC_TRY_RUN([#ifdef HAVE_NLIST_H
changequote([, ])dnl
#endif
exit(1);
-}], ac_cv_lead_uscore=yes, ac_cv_lead_uscore=no, ac_cv_lead_uscore=NO)
+}], fptools_cv_lead_uscore=yes, fptools_cv_lead_uscore=no, fptools_cv_lead_uscore=NO)
;;
esac);
-LeadingUnderscore=`echo $ac_cv_lead_uscore | sed 'y/yesno/YESNO/'`
+LeadingUnderscore=`echo $fptools_cv_lead_uscore | sed 'y/yesno/YESNO/'`
AC_SUBST(LeadingUnderscore)
+case $LeadingUnderscore in
+YES) AC_DEFINE(LEADING_UNDERSCORE);;
+esac
])
-#
-# Check for Happy and version.
-#
-AC_DEFUN(AC_HAPPY,
+dnl
+dnl Check for Happy and version.
+dnl
+AC_DEFUN(FPTOOLS_HAPPY,
[AC_PATH_PROG(HappyCmd,happy)
-AC_CACHE_CHECK([for version of happy], ac_cv_happy_version,
+AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version,
[if test x"$HappyCmd" != x; then
- ac_cv_happy_version="`$HappyCmd -v |
+ fptools_cv_happy_version="`$HappyCmd -v |
changequote(, )dnl
grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'`" ;
changequote([, ])dnl
else
- ac_cv_happy_version="";
+ fptools_cv_happy_version="";
fi;
-if expr "$ac_cv_happy_version" "<" 1.4 > /dev/null 2>&1; then
+if expr "$fptools_cv_happy_version" "<" 1.4 > /dev/null 2>&1; then
echo
echo "Happy version 1.4 or later is required to compile GHC."
exit 1;
AC_SUBST(HappyVersion)
])
-#
-# What's the best way of doing context diffs?
-#
-# (NB: NeXTStep thinks diff'ing a file against itself is "trouble")
-#
-AC_DEFUN(AC_PROG_DIFF,
-[AC_CACHE_CHECK([for ok way to do context diffs], ac_cv_context_diffs,
+dnl
+dnl What's the best way of doing context diffs?
+dnl
+dnl (NB: NeXTStep thinks diff'ing a file against itself is "trouble")
+dnl
+AC_DEFUN(FPTOOLS_PROG_DIFF,
+[AC_CACHE_CHECK([for ok way to do context diffs], fptools_cv_context_diffs,
[echo foo > conftest1
echo foo > conftest2
if diff -C 1 conftest1 conftest2 > /dev/null 2>&1 ; then
- ac_cv_context_diffs='diff -C 1'
+ fptools_cv_context_diffs='diff -C 1'
else
if diff -c1 conftest1 conftest2 > /dev/null 2>&1 ; then
- ac_cv_context_diffs='diff -c1'
+ fptools_cv_context_diffs='diff -c1'
else
echo "Can't figure out how to do context diffs."
echo "Neither \`diff -C 1' nor \`diff -c1' works."
fi
rm -f conftest1 conftest2
])
-ContextDiffCmd=$ac_cv_context_diffs
+ContextDiffCmd=$fptools_cv_context_diffs
AC_SUBST(ContextDiffCmd)
])
-#
-# Finding the Right Yacc
-#
-AC_DEFUN(AC_PROG_YACCY,
+dnl
+dnl Finding the Right Yacc
+dnl
+AC_DEFUN(FPTOOLS_PROG_YACCY,
[AC_PROG_YACC
if test "$YACC" = "yacc"; then
AC_CACHE_CHECK([if it is an OK yacc], ac_cv_prog_yacc,
AC_SUBST(YaccCmd)
])
-dnl Checking for ar and its arguments + whether we need ranlib.
-#
-# ArCmd and RANLIB are AC_SUBST'ed
-#
-AC_DEFUN(AC_PROG_AR_AND_RANLIB,
+dnl *** Checking for ar and its arguments + whether we need ranlib.
+dnl
+dnl ArCmd and RANLIB are AC_SUBST'ed
+dnl
+AC_DEFUN(FPTOOLS_PROG_AR_AND_RANLIB,
[AC_PATH_PROG(ArCmd,ar)
if test -z "$ArCmd"; then
echo "You don't seem to have ar in your PATH...I have no idea how to make a library"
fi
])
-#
+dnl
dnl AC_SHEBANG_PERL - can we she-bang perl?
-#
-AC_DEFUN(AC_SHEBANG_PERL,
-[AC_CACHE_CHECK([if your perl works in shell scripts], ac_cv_shebang_perl,
+dnl
+AC_DEFUN(FPTOOLS_SHEBANG_PERL,
+[AC_CACHE_CHECK([if your perl works in shell scripts], fptools_cv_shebang_perl,
[echo "#!$PerlCmd"'
exit $1;
' > conftest
chmod u+x conftest
(SHELL=/bin/sh; export SHELL; ./conftest 69 > /dev/null)
if test $? -ne 69; then
- ac_cv_shebang_perl=yes
+ fptools_cv_shebang_perl=yes
else
- ac_cv_shebang_perl=no
+ fptools_cv_shebang_perl=no
fi
rm -f conftest
])])
-#
-# Extra testing of the result AC_PROG_CC, testing the gcc version no.
-# *Must* be called after AC_PROG_CC
-#
-AC_DEFUN(AC_HAVE_GCC,
-[AC_CACHE_CHECK([whether you have an ok gcc], ac_cv_have_gcc,
+dnl
+dnl Extra testing of the result AC_PROG_CC, testing the gcc version no.
+dnl *Must* be called after AC_PROG_CC
+dnl
+AC_DEFUN(FPTOOLS_HAVE_GCC,
+[AC_CACHE_CHECK([whether you have an ok gcc], fptools_cv_have_gcc,
[if test -z "$GCC"; then
echo ''
echo "You would be better off with gcc"
echo "Perhaps it is already installed, but not in your PATH?"
- ac_cv_have_gcc='no'
+ fptools_cv_have_gcc='no'
else
changequote(, )dnl
cmd_string="`$CC -v 2>&1 | grep 'version ' | sed -e 's/.*version [^0-9]*\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/expr 20 \\\< \1 \\\* 10 + \2/g' `"
echo "I'm not sure if your version of gcc will work,"
echo "but it's worth a shot, eh?"
fi
- ac_cv_have_gcc='yes'
+ fptools_cv_have_gcc='yes'
fi
])
-HaveGcc=`echo $ac_cv_have_gcc | sed 'y/yesno/YESNO/'`
+HaveGcc=`echo $fptools_cv_have_gcc | sed 'y/yesno/YESNO/'`
AC_SUBST(HaveGcc)
])
-#
-# AC_PROG_GNUCPP gathers the path to the cpp that the
-# gcc driver calls upon.
-#
-# Substitutes: GNUCPP and RAWCPP (latter is 'GNUCPP -traditional')
-#
-AC_DEFUN(AC_PROG_GNUCPP,
-[AC_CACHE_CHECK([how to invoke GNU cpp directly], ac_cv_gnu_cpp,
+dnl
+dnl FPTOOLS_PROG_GNUCPP gathers the path to the cpp that the
+dnl gcc driver calls upon.
+dnl
+dnl Substitutes: GNUCPP and RAWCPP (latter is 'GNUCPP -traditional')
+dnl
+AC_DEFUN(FPTOOLS_PROG_GNUCPP,
+[AC_CACHE_CHECK([how to invoke GNU cpp directly], fptools_cv_gnu_cpp,
[if test "$HaveGcc" = "YES"; then
echo > conftest.c
gcc -v -E conftest.c >/dev/null 2>conftest.out
- echo '/(\S+(\/|\\)cpp)/ && ([$]foo = [$]1) =~ tr/\\/\// && print "[$]foo";' > conftest.pl
- ac_cv_gnu_cpp="`eval $PerlCmd -n conftest.pl conftest.out`"
+ # \x5c = backslash
+ echo 'tr/\x5c/\//; /(\S+\/)cpp/ && print "[$]{1}cpp -iprefix [$]1";' > conftest.pl
+ fptools_cv_gnu_cpp="`eval $PerlCmd -n conftest.pl conftest.out`"
rm -fr conftest*
else
# We need to be able to invoke CPP directly, preferably
# this at the moment).
# Take a guess at what to use, this probably won't work.
echo Warning: GNU cpp not found, using $CPP
- ac_cv_gnu_cpp = $CPP
+ fptools_cv_gnu_cpp = $CPP
fi
])
-GNUCPP=$ac_cv_gnu_cpp
+GNUCPP=$fptools_cv_gnu_cpp
RAWCPP="$GNUCPP -traditional"
AC_SUBST(GNUCPP)
AC_SUBST(RAWCPP)
])
-#
-# Small feature test for perl version. Assumes PerlCmd
-# contains path to perl binary
-#
-AC_DEFUN(AC_CHECK_PERL_VERSION,
+dnl Small feature test for perl version. Assumes PerlCmd
+dnl contains path to perl binary
+dnl
+AC_DEFUN(FPTOOLS_CHECK_PERL_VERSION,
[$PerlCmd -v >conftest.out 2>&1
if grep "version 4" conftest.out >/dev/null 2>&1; then
if grep "Patch level: 35" conftest.out >/dev/null 2>&1; then
fi
rm -fr conftest*
])
+
+dnl ** figure out the alignment restriction of a type
+dnl (required SIZEOF test but AC_CHECK_SIZEOF doesn't call PROVIDE
+dnl so we can't call REQUIRE)
+
+dnl FPTOOLS_CHECK_ALIGNMENT(TYPE)
+AC_DEFUN(FPTOOLS_CHECK_ALIGNMENT,
+[changequote(<<, >>)dnl
+dnl The name to #define.
+define(<<AC_TYPE_NAME>>, translit(alignment_$1, [a-z *], [A-Z_P]))dnl
+dnl The cache variable name.
+define(<<AC_CV_NAME>>, translit(ac_cv_alignment_$1, [ *], [_p]))dnl
+dnl The name of the corresponding size.
+define(<<AC_CV_SIZEOF_NAME>>, translit(ac_cv_sizeof_$1, [ *], [_p]))dnl
+changequote([, ])dnl
+AC_MSG_CHECKING(alignment of $1)
+AC_CACHE_VAL(AC_CV_NAME,
+[AC_TRY_RUN([
+#include <stdio.h>
+#if HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+#ifndef offsetof
+#define offsetof(ty,field) ((size_t)((char *)&((ty *)0)->field - (char *)(ty *)0))
+#endif
+int
+main()
+{
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", offsetof(struct { char c; $1 ty;},ty));
+ exit(0);
+}],
+AC_CV_NAME=`cat conftestval`,
+AC_CV_NAME=$AC_CV_SIZEOF_NAME,
+AC_CV_NAME=$AC_CV_SIZEOF_NAME)])
+AC_MSG_RESULT($AC_CV_NAME)
+AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME)
+AC_PROVIDE($AC_TYPE_NAME)
+undefine([AC_TYPE_NAME])dnl
+undefine([AC_CV_NAME])dnl
+undefine([AC_CV_SIZEOF_NAME])dnl
+])
+
+dnl ** figure out whether C compiler supports 'long long's
+dnl (Closely based on Andreas Zeller's macro for testing
+dnl for this under C++)
+dnl
+dnl If the C compiler supports `long long' types,
+dnl define `HAVE_LONG_LONG'.
+dnl
+AC_DEFUN(FPTOOLS_C_LONG_LONG,
+[
+AC_REQUIRE([AC_PROG_CC])
+AC_MSG_CHECKING(whether ${CC} supports long long types)
+AC_CACHE_VAL(fptools_cv_have_long_long,
+[
+AC_LANG_SAVE
+AC_LANG_C
+AC_TRY_COMPILE(,[long long a;],
+fptools_cv_have_long_long=yes,
+fptools_cv_have_long_long=no)
+AC_LANG_RESTORE
+])
+AC_MSG_RESULT($fptools_cv_have_long_long)
+if test "$fptools_cv_have_long_long" = yes; then
+AC_DEFINE(HAVE_LONG_LONG)
+fi
+])
+
+dnl *** Can we open files in binary mode? ***
+dnl
+AC_DEFUN(FPTOOLS_O_BINARY,
+[
+AC_REQUIRE([AC_PROG_CC])
+AC_MSG_CHECKING(whether we can open files in binary mode)
+AC_CACHE_VAL(fptools_cv_have_o_binary,
+[
+AC_LANG_SAVE
+AC_LANG_C
+AC_TRY_COMPILE(,
+[#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+int x = O_BINARY;],
+fptools_cv_have_o_binary=yes,
+fptools_cv_have_o_binary=no)
+AC_LANG_RESTORE
+])
+AC_MSG_RESULT($fptools_cv_have_o_binary)
+if test "$fptools_cv_have_o_binary" = yes; then
+AC_DEFINE(HAVE_O_BINARY)
+fi
+])
+
+dnl *** Which one comes first, .text or .data? ***
+dnl
+AC_DEFUN(FPTOOLS_CODE_BEFORE_DATA,
+[AC_CACHE_CHECK([if code section appears before data], fptools_cv_code_bef_data,
+[AC_TRY_RUN([
+int f() { return 1; }
+int i;
+int main() { return ((char*)&f > (char*)&i); }
+
+],
+fptools_cv_code_bef_data=yes, fptools_cv_code_bef_data=no)])
+if test "$fptools_cv_code_bef_data" = yes; then
+ AC_DEFINE(CODE_BEFORE_DATA)
+fi
+])
+
+dnl *** Helper function **
+dnl
+AC_DEFUN(FPTOOLS_IN_SCOPE,AC_TRY_LINK([extern char* $1;],[return (int)&$2], $3=yes, $3=no))
+
+dnl *** What's the end-of-text-section marker called? ***
+dnl
+AC_DEFUN(FPTOOLS_END_TEXT_SECTION,
+[AC_CACHE_CHECK([for end of text section marker], fptools_cv_end_of_text,
+[
+not_done=1
+for i in etext _etext __etext; do
+ FPTOOLS_IN_SCOPE($i,$i,fptools_cv_end_of_text)
+ if test "$fptools_cv_end_of_text" = yes; then
+ AC_DEFINE(TEXT_SECTION_END_MARKER, $i)
+ not_done=0
+ break
+ fi
+done
+if test "$not_done"; then
+FPTOOLS_IN_SCOPE(etext asm("etext"),etext,fptools_cv_end_of_text);
+if test "$fptools_cv_end_of_text" = yes; then
+ AC_DEFINE(TEXT_SECTION_END_MARKER, etext asm("etext"))
+else
+ AC_DEFINE(TEXT_SECTION_END_MARKER, dunno_what_it_is)
+fi
+fi
+])])
+
+dnl *** What's the end-of-data-section marker called? ***
+dnl
+AC_DEFUN(FPTOOLS_END_DATA_SECTION,
+[AC_CACHE_CHECK([for end of data section marker], fptools_cv_end_of_data,
+[
+not_done=1
+for i in end _end __end; do
+ FPTOOLS_IN_SCOPE($i,$i,fptools_cv_end_of_data)
+ if test "$fptools_cv_end_of_data" = yes; then
+ AC_DEFINE(DATA_SECTION_END_MARKER, $i)
+ not_done=0
+ break
+ fi
+done
+if test "$not_done"; then
+FPTOOLS_IN_SCOPE(end asm("end"),end,fptools_cv_end_of_data);
+if test "$fptools_cv_end_of_data" = yes; then
+ AC_DEFINE(DATA_SECTION_END_MARKER, end asm("end"))
+else
+ AC_DEFINE(DATA_SECTION_END_MARKER, dunno_what_it_is)
+fi
+fi
+])])