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aclocal.m4
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dnl***************************************************************************
dnl Copyright 2017-2023,2024 Thomas E. Dickey *
dnl Copyright 2007-2015,2017 Free Software Foundation, Inc. *
dnl *
dnl Permission is hereby granted, free of charge, to any person obtaining a *
dnl copy of this software and associated documentation files (the *
dnl "Software"), to deal in the Software without restriction, including *
dnl without limitation the rights to use, copy, modify, merge, publish, *
dnl distribute, distribute with modifications, sublicense, and/or sell *
dnl copies of the Software, and to permit persons to whom the Software is *
dnl furnished to do so, subject to the following conditions: *
dnl *
dnl The above copyright notice and this permission notice shall be included *
dnl in all copies or substantial portions of the Software. *
dnl *
dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
dnl OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
dnl MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
dnl IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
dnl DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
dnl OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
dnl THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
dnl *
dnl Except as contained in this notice, the name(s) of the above copyright *
dnl holders shall not be used in advertising or otherwise to promote the *
dnl sale, use or other dealings in this Software without prior written *
dnl authorization. *
dnl***************************************************************************
dnl
dnl $Id: aclocal.m4,v 1.49 2024/05/01 19:01:06 tom Exp $
dnl
dnl Author: Thomas E. Dickey
dnl
dnl Macros used in TACK test program auto-configuration script.
dnl
dnl These macros are maintained separately from NCURSES. The copyright on
dnl this file applies to the aggregation of macros and does not affect use of
dnl these macros in other applications.
dnl
dnl See https://invisible-island.net/autoconf/ for additional information.
dnl
dnl ---------------------------------------------------------------------------
dnl ---------------------------------------------------------------------------
dnl CF_ACVERSION_CHECK version: 5 updated: 2014/06/04 19:11:49
dnl ------------------
dnl Conditionally generate script according to whether we're using a given autoconf.
dnl
dnl $1 = version to compare against
dnl $2 = code to use if AC_ACVERSION is at least as high as $1.
dnl $3 = code to use if AC_ACVERSION is older than $1.
define([CF_ACVERSION_CHECK],
[
ifdef([AC_ACVERSION], ,[ifdef([AC_AUTOCONF_VERSION],[m4_copy([AC_AUTOCONF_VERSION],[AC_ACVERSION])],[m4_copy([m4_PACKAGE_VERSION],[AC_ACVERSION])])])dnl
ifdef([m4_version_compare],
[m4_if(m4_version_compare(m4_defn([AC_ACVERSION]), [$1]), -1, [$3], [$2])],
[CF_ACVERSION_COMPARE(
AC_PREREQ_CANON(AC_PREREQ_SPLIT([$1])),
AC_PREREQ_CANON(AC_PREREQ_SPLIT(AC_ACVERSION)), AC_ACVERSION, [$2], [$3])])])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ACVERSION_COMPARE version: 3 updated: 2012/10/03 18:39:53
dnl --------------------
dnl CF_ACVERSION_COMPARE(MAJOR1, MINOR1, TERNARY1,
dnl MAJOR2, MINOR2, TERNARY2,
dnl PRINTABLE2, not FOUND, FOUND)
define([CF_ACVERSION_COMPARE],
[ifelse(builtin([eval], [$2 < $5]), 1,
[ifelse([$8], , ,[$8])],
[ifelse([$9], , ,[$9])])])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ADD_CFLAGS version: 15 updated: 2020/12/31 10:54:15
dnl -------------
dnl Copy non-preprocessor flags to $CFLAGS, preprocessor flags to $CPPFLAGS
dnl $1 = flags to add
dnl $2 = if given makes this macro verbose.
dnl
dnl Put any preprocessor definitions that use quoted strings in $EXTRA_CPPFLAGS,
dnl to simplify use of $CPPFLAGS in compiler checks, etc., that are easily
dnl confused by the quotes (which require backslashes to keep them usable).
AC_DEFUN([CF_ADD_CFLAGS],
[
cf_fix_cppflags=no
cf_new_cflags=
cf_new_cppflags=
cf_new_extra_cppflags=
for cf_add_cflags in $1
do
case "$cf_fix_cppflags" in
(no)
case "$cf_add_cflags" in
(-undef|-nostdinc*|-I*|-D*|-U*|-E|-P|-C)
case "$cf_add_cflags" in
(-D*)
cf_tst_cflags=`echo "${cf_add_cflags}" |sed -e 's/^-D[[^=]]*='\''\"[[^"]]*//'`
test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
&& test -z "${cf_tst_cflags}" \
&& cf_fix_cppflags=yes
if test "$cf_fix_cppflags" = yes ; then
CF_APPEND_TEXT(cf_new_extra_cppflags,$cf_add_cflags)
continue
elif test "${cf_tst_cflags}" = "\"'" ; then
CF_APPEND_TEXT(cf_new_extra_cppflags,$cf_add_cflags)
continue
fi
;;
esac
case "$CPPFLAGS" in
(*$cf_add_cflags)
;;
(*)
case "$cf_add_cflags" in
(-D*)
cf_tst_cppflags=`echo "x$cf_add_cflags" | sed -e 's/^...//' -e 's/=.*//'`
CF_REMOVE_DEFINE(CPPFLAGS,$CPPFLAGS,$cf_tst_cppflags)
;;
esac
CF_APPEND_TEXT(cf_new_cppflags,$cf_add_cflags)
;;
esac
;;
(*)
CF_APPEND_TEXT(cf_new_cflags,$cf_add_cflags)
;;
esac
;;
(yes)
CF_APPEND_TEXT(cf_new_extra_cppflags,$cf_add_cflags)
cf_tst_cflags=`echo "${cf_add_cflags}" |sed -e 's/^[[^"]]*"'\''//'`
test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
&& test -z "${cf_tst_cflags}" \
&& cf_fix_cppflags=no
;;
esac
done
if test -n "$cf_new_cflags" ; then
ifelse([$2],,,[CF_VERBOSE(add to \$CFLAGS $cf_new_cflags)])
CF_APPEND_TEXT(CFLAGS,$cf_new_cflags)
fi
if test -n "$cf_new_cppflags" ; then
ifelse([$2],,,[CF_VERBOSE(add to \$CPPFLAGS $cf_new_cppflags)])
CF_APPEND_TEXT(CPPFLAGS,$cf_new_cppflags)
fi
if test -n "$cf_new_extra_cppflags" ; then
ifelse([$2],,,[CF_VERBOSE(add to \$EXTRA_CPPFLAGS $cf_new_extra_cppflags)])
CF_APPEND_TEXT(EXTRA_CPPFLAGS,$cf_new_extra_cppflags)
fi
AC_SUBST(EXTRA_CPPFLAGS)
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ADD_INCDIR version: 17 updated: 2021/09/04 06:35:04
dnl -------------
dnl Add an include-directory to $CPPFLAGS. Don't add /usr/include, since it is
dnl redundant. We don't normally need to add -I/usr/local/include for gcc,
dnl but old versions (and some misinstalled ones) need that. To make things
dnl worse, gcc 3.x may give error messages if -I/usr/local/include is added to
dnl the include-path).
AC_DEFUN([CF_ADD_INCDIR],
[
if test -n "$1" ; then
for cf_add_incdir in $1
do
while test "$cf_add_incdir" != /usr/include
do
if test -d "$cf_add_incdir"
then
cf_have_incdir=no
if test -n "$CFLAGS$CPPFLAGS" ; then
# a loop is needed to ensure we can add subdirs of existing dirs
for cf_test_incdir in $CFLAGS $CPPFLAGS ; do
if test ".$cf_test_incdir" = ".-I$cf_add_incdir" ; then
cf_have_incdir=yes; break
fi
done
fi
if test "$cf_have_incdir" = no ; then
if test "$cf_add_incdir" = /usr/local/include ; then
if test "$GCC" = yes
then
cf_save_CPPFLAGS=$CPPFLAGS
CF_APPEND_TEXT(CPPFLAGS,-I$cf_add_incdir)
AC_TRY_COMPILE([#include <stdio.h>],
[printf("Hello")],
[],
[cf_have_incdir=yes])
CPPFLAGS=$cf_save_CPPFLAGS
fi
fi
fi
if test "$cf_have_incdir" = no ; then
CF_VERBOSE(adding $cf_add_incdir to include-path)
ifelse([$2],,CPPFLAGS,[$2])="$ifelse([$2],,CPPFLAGS,[$2]) -I$cf_add_incdir"
cf_top_incdir=`echo "$cf_add_incdir" | sed -e 's%/include/.*$%/include%'`
test "$cf_top_incdir" = "$cf_add_incdir" && break
cf_add_incdir="$cf_top_incdir"
else
break
fi
else
break
fi
done
done
fi
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ADD_LIB version: 2 updated: 2010/06/02 05:03:05
dnl ----------
dnl Add a library, used to enforce consistency.
dnl
dnl $1 = library to add, without the "-l"
dnl $2 = variable to update (default $LIBS)
AC_DEFUN([CF_ADD_LIB],[CF_ADD_LIBS(-l$1,ifelse($2,,LIBS,[$2]))])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ADD_LIBDIR version: 11 updated: 2020/12/31 20:19:42
dnl -------------
dnl Adds to the library-path
dnl
dnl Some machines have trouble with multiple -L options.
dnl
dnl $1 is the (list of) directory(s) to add
dnl $2 is the optional name of the variable to update (default LDFLAGS)
dnl
AC_DEFUN([CF_ADD_LIBDIR],
[
if test -n "$1" ; then
for cf_add_libdir in $1
do
if test "$cf_add_libdir" = /usr/lib ; then
:
elif test -d "$cf_add_libdir"
then
cf_have_libdir=no
if test -n "$LDFLAGS$LIBS" ; then
# a loop is needed to ensure we can add subdirs of existing dirs
for cf_test_libdir in $LDFLAGS $LIBS ; do
if test ".$cf_test_libdir" = ".-L$cf_add_libdir" ; then
cf_have_libdir=yes; break
fi
done
fi
if test "$cf_have_libdir" = no ; then
CF_VERBOSE(adding $cf_add_libdir to library-path)
ifelse([$2],,LDFLAGS,[$2])="-L$cf_add_libdir $ifelse([$2],,LDFLAGS,[$2])"
fi
fi
done
fi
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ADD_LIBS version: 3 updated: 2019/11/02 16:47:33
dnl -----------
dnl Add one or more libraries, used to enforce consistency. Libraries are
dnl prepended to an existing list, since their dependencies are assumed to
dnl already exist in the list.
dnl
dnl $1 = libraries to add, with the "-l", etc.
dnl $2 = variable to update (default $LIBS)
AC_DEFUN([CF_ADD_LIBS],[
cf_add_libs="[$]ifelse($2,,LIBS,[$2])"
# reverse order
cf_add_0lib=
for cf_add_1lib in $1; do cf_add_0lib="$cf_add_1lib $cf_add_0lib"; done
# filter duplicates
for cf_add_1lib in $cf_add_0lib; do
for cf_add_2lib in $cf_add_libs; do
if test "x$cf_add_1lib" = "x$cf_add_2lib"; then
cf_add_1lib=
break
fi
done
test -n "$cf_add_1lib" && cf_add_libs="$cf_add_1lib $cf_add_libs"
done
ifelse($2,,LIBS,[$2])="$cf_add_libs"
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ADD_SUBDIR_PATH version: 5 updated: 2020/12/31 20:19:42
dnl ------------------
dnl Append to a search-list for a nonstandard header/lib-file
dnl $1 = the variable to return as result
dnl $2 = the package name
dnl $3 = the subdirectory, e.g., bin, include or lib
dnl $4 = the directory under which we will test for subdirectories
dnl $5 = a directory that we do not want $4 to match
AC_DEFUN([CF_ADD_SUBDIR_PATH],
[
test "x$4" != "x$5" && \
test -d "$4" && \
ifelse([$5],NONE,,[{ test -z "$5" || test "x$5" = xNONE || test "x$4" != "x$5"; } &&]) {
test -n "$verbose" && echo " ... testing for $3-directories under $4"
test -d "$4/$3" && $1="[$]$1 $4/$3"
test -d "$4/$3/$2" && $1="[$]$1 $4/$3/$2"
test -d "$4/$3/$2/$3" && $1="[$]$1 $4/$3/$2/$3"
test -d "$4/$2/$3" && $1="[$]$1 $4/$2/$3"
test -d "$4/$2/$3/$2" && $1="[$]$1 $4/$2/$3/$2"
}
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ANSI_CC_CHECK version: 15 updated: 2024/05/01 15:00:19
dnl ----------------
dnl This was originally adapted from the macros 'fp_PROG_CC_STDC' and
dnl 'fp_C_PROTOTYPES' in the sharutils 4.2 distribution.
AC_DEFUN([CF_ANSI_CC_CHECK],
[
CF_CC_ENV_FLAGS
AC_CACHE_CHECK(for ${CC:-cc} option to accept ANSI C, cf_cv_ansi_cc,[
cf_cv_ansi_cc=no
cf_save_CFLAGS="$CFLAGS"
cf_save_CPPFLAGS="$CPPFLAGS"
# Don't try gcc -ansi; that turns off useful extensions and
# breaks some systems' header files.
# AIX -qlanglvl=ansi
# Ultrix and OSF/1 -std1
# HP-UX -Aa -D_HPUX_SOURCE
# SVR4 -Xc
# UnixWare 1.2 (cannot use -Xc, since ANSI/POSIX clashes)
for cf_arg in "-DCC_HAS_PROTOS" \
"" \
-qlanglvl=ansi \
-std1 \
-Ae \
"-Aa -D_HPUX_SOURCE" \
-Xc
do
CFLAGS="$cf_save_CFLAGS"
CPPFLAGS="$cf_save_CPPFLAGS"
CF_ADD_CFLAGS($cf_arg)
AC_TRY_COMPILE(
[
#ifndef CC_HAS_PROTOS
#if !defined(__STDC__) || (__STDC__ != 1)
choke me
#endif
#endif
extern int test (int i, double x);
],[
struct s1 {int (*f) (int a);};
struct s2 {int (*f) (double a);};],
[cf_cv_ansi_cc="$cf_arg"; break])
done
CFLAGS="$cf_save_CFLAGS"
CPPFLAGS="$cf_save_CPPFLAGS"
])
if test "$cf_cv_ansi_cc" != "no"; then
if test ".$cf_cv_ansi_cc" != ".-DCC_HAS_PROTOS"; then
CF_ADD_CFLAGS($cf_cv_ansi_cc)
else
AC_DEFINE(CC_HAS_PROTOS,1,[Define to 1 if C compiler supports prototypes])
fi
fi
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ANSI_CC_REQD version: 4 updated: 2008/03/23 14:48:54
dnl ---------------
dnl For programs that must use an ANSI compiler, obtain compiler options that
dnl will make it recognize prototypes. We'll do preprocessor checks in other
dnl macros, since tools such as unproto can fake prototypes, but only part of
dnl the preprocessor.
AC_DEFUN([CF_ANSI_CC_REQD],
[AC_REQUIRE([CF_ANSI_CC_CHECK])
if test "$cf_cv_ansi_cc" = "no"; then
AC_MSG_ERROR(
[Your compiler does not appear to recognize prototypes.
You have the following choices:
a. adjust your compiler options
b. get an up-to-date compiler
c. use a wrapper such as unproto])
fi
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_APPEND_CFLAGS version: 3 updated: 2021/09/05 17:25:40
dnl ----------------
dnl Use CF_ADD_CFLAGS after first checking for potential redefinitions.
dnl $1 = flags to add
dnl $2 = if given makes this macro verbose.
define([CF_APPEND_CFLAGS],
[
for cf_add_cflags in $1
do
case "x$cf_add_cflags" in
(x-[[DU]]*)
CF_REMOVE_CFLAGS($cf_add_cflags,CFLAGS,[$2])
CF_REMOVE_CFLAGS($cf_add_cflags,CPPFLAGS,[$2])
;;
esac
CF_ADD_CFLAGS([$cf_add_cflags],[$2])
done
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_APPEND_TEXT version: 1 updated: 2017/02/25 18:58:55
dnl --------------
dnl use this macro for appending text without introducing an extra blank at
dnl the beginning
define([CF_APPEND_TEXT],
[
test -n "[$]$1" && $1="[$]$1 "
$1="[$]{$1}$2"
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ARG_DISABLE version: 3 updated: 1999/03/30 17:24:31
dnl --------------
dnl Allow user to disable a normally-on option.
AC_DEFUN([CF_ARG_DISABLE],
[CF_ARG_OPTION($1,[$2],[$3],[$4],yes)])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ARG_ENABLE version: 3 updated: 1999/03/30 17:24:31
dnl -------------
dnl Allow user to enable a normally-off option.
AC_DEFUN([CF_ARG_ENABLE],
[CF_ARG_OPTION($1,[$2],[$3],[$4],no)])dnl
dnl ---------------------------------------------------------------------------
dnl CF_ARG_OPTION version: 5 updated: 2015/05/10 19:52:14
dnl -------------
dnl Restricted form of AC_ARG_ENABLE that ensures user doesn't give bogus
dnl values.
dnl
dnl Parameters:
dnl $1 = option name
dnl $2 = help-string
dnl $3 = action to perform if option is not default
dnl $4 = action if perform if option is default
dnl $5 = default option value (either 'yes' or 'no')
AC_DEFUN([CF_ARG_OPTION],
[AC_ARG_ENABLE([$1],[$2],[test "$enableval" != ifelse([$5],no,yes,no) && enableval=ifelse([$5],no,no,yes)
if test "$enableval" != "$5" ; then
ifelse([$3],,[ :]dnl
,[ $3]) ifelse([$4],,,[
else
$4])
fi],[enableval=$5 ifelse([$4],,,[
$4
])dnl
])])dnl
dnl ---------------------------------------------------------------------------
dnl CF_AR_FLAGS version: 9 updated: 2021/01/01 13:31:04
dnl -----------
dnl Check for suitable "ar" (archiver) options for updating an archive.
dnl
dnl In particular, handle some obsolete cases where the "-" might be omitted,
dnl as well as a workaround for breakage of make's archive rules by the GNU
dnl binutils "ar" program.
AC_DEFUN([CF_AR_FLAGS],[
AC_REQUIRE([CF_PROG_AR])
AC_CACHE_CHECK(for options to update archives, cf_cv_ar_flags,[
case "$cf_cv_system_name" in
(*-msvc*)
cf_cv_ar_flags=''
cat >mk_static_lib.sh <<-EOF
#!$SHELL
MSVC_BIN="[$]AR"
out="\[$]1"
shift
exec \[$]MSVC_BIN -out:"\[$]out" \[$]@
EOF
chmod +x mk_static_lib.sh
AR=`pwd`/mk_static_lib.sh
;;
(*)
cf_cv_ar_flags=unknown
for cf_ar_flags in -curvU -curv curv -crv crv -cqv cqv -rv rv
do
# check if $ARFLAGS already contains this choice
if test "x$ARFLAGS" != "x" ; then
cf_check_ar_flags=`echo "x$ARFLAGS" | sed -e "s/$cf_ar_flags\$//" -e "s/$cf_ar_flags / /"`
if test "x$ARFLAGS" != "$cf_check_ar_flags" ; then
cf_cv_ar_flags=
break
fi
fi
rm -f "conftest.$ac_cv_objext"
rm -f conftest.a
cat >"conftest.$ac_ext" <<EOF
#line __oline__ "configure"
int testdata[[3]] = { 123, 456, 789 };
EOF
if AC_TRY_EVAL(ac_compile) ; then
echo "$AR $ARFLAGS $cf_ar_flags conftest.a conftest.$ac_cv_objext" >&AC_FD_CC
$AR $ARFLAGS "$cf_ar_flags" conftest.a "conftest.$ac_cv_objext" 2>&AC_FD_CC 1>/dev/null
if test -f conftest.a ; then
cf_cv_ar_flags="$cf_ar_flags"
break
fi
else
CF_VERBOSE(cannot compile test-program)
break
fi
done
rm -f conftest.a "conftest.$ac_ext" "conftest.$ac_cv_objext"
;;
esac
])
if test -n "$ARFLAGS" ; then
if test -n "$cf_cv_ar_flags" ; then
ARFLAGS="$ARFLAGS $cf_cv_ar_flags"
fi
else
ARFLAGS=$cf_cv_ar_flags
fi
AC_SUBST(ARFLAGS)
])
dnl ---------------------------------------------------------------------------
dnl CF_C11_NORETURN version: 4 updated: 2023/02/18 17:41:25
dnl ---------------
AC_DEFUN([CF_C11_NORETURN],
[
AC_MSG_CHECKING(if you want to use C11 _Noreturn feature)
CF_ARG_ENABLE(stdnoreturn,
[ --enable-stdnoreturn enable C11 _Noreturn feature for diagnostics],
[enable_stdnoreturn=yes],
[enable_stdnoreturn=no])
AC_MSG_RESULT($enable_stdnoreturn)
if test $enable_stdnoreturn = yes; then
AC_CACHE_CHECK([for C11 _Noreturn feature], cf_cv_c11_noreturn,
[AC_TRY_COMPILE([
$ac_includes_default
#include <stdnoreturn.h>
static _Noreturn void giveup(void) { exit(0); }
],
[if (feof(stdin)) giveup()],
cf_cv_c11_noreturn=yes,
cf_cv_c11_noreturn=no)
])
else
cf_cv_c11_noreturn=no,
fi
if test "$cf_cv_c11_noreturn" = yes; then
AC_DEFINE(HAVE_STDNORETURN_H, 1,[Define if <stdnoreturn.h> header is available and working])
AC_DEFINE_UNQUOTED(STDC_NORETURN,_Noreturn,[Define if C11 _Noreturn keyword is supported])
HAVE_STDNORETURN_H=1
else
HAVE_STDNORETURN_H=0
fi
AC_SUBST(HAVE_STDNORETURN_H)
AC_SUBST(STDC_NORETURN)
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_CC_ENV_FLAGS version: 11 updated: 2023/02/20 11:15:46
dnl ---------------
dnl Check for user's environment-breakage by stuffing CFLAGS/CPPFLAGS content
dnl into CC. This will not help with broken scripts that wrap the compiler
dnl with options, but eliminates a more common category of user confusion.
dnl
dnl In particular, it addresses the problem of being able to run the C
dnl preprocessor in a consistent manner.
dnl
dnl Caveat: this also disallows blanks in the pathname for the compiler, but
dnl the nuisance of having inconsistent settings for compiler and preprocessor
dnl outweighs that limitation.
AC_DEFUN([CF_CC_ENV_FLAGS],
[
# This should have been defined by AC_PROG_CC
: "${CC:=cc}"
AC_MSG_CHECKING(\$CFLAGS variable)
case "x$CFLAGS" in
(*-[[IUD]]*)
AC_MSG_RESULT(broken)
AC_MSG_WARN(your environment uses the CFLAGS variable to hold CPPFLAGS options)
cf_flags="$CFLAGS"
CFLAGS=
for cf_arg in $cf_flags
do
CF_ADD_CFLAGS($cf_arg)
done
;;
(*)
AC_MSG_RESULT(ok)
;;
esac
AC_MSG_CHECKING(\$CC variable)
case "$CC" in
(*[[\ \ ]]-*)
AC_MSG_RESULT(broken)
AC_MSG_WARN(your environment uses the CC variable to hold CFLAGS/CPPFLAGS options)
# humor him...
cf_prog=`echo "$CC" | sed -e 's/ / /g' -e 's/[[ ]]* / /g' -e 's/[[ ]]*[[ ]]-[[^ ]].*//'`
cf_flags=`echo "$CC" | sed -e "s%^$cf_prog%%"`
CC="$cf_prog"
for cf_arg in $cf_flags
do
case "x$cf_arg" in
(x-[[IUDfgOW]]*)
CF_ADD_CFLAGS($cf_arg)
;;
(*)
CC="$CC $cf_arg"
;;
esac
done
CF_VERBOSE(resulting CC: '$CC')
CF_VERBOSE(resulting CFLAGS: '$CFLAGS')
CF_VERBOSE(resulting CPPFLAGS: '$CPPFLAGS')
;;
(*)
AC_MSG_RESULT(ok)
;;
esac
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_CHECK_CACHE version: 13 updated: 2020/12/31 10:54:15
dnl --------------
dnl Check if we're accidentally using a cache from a different machine.
dnl Derive the system name, as a check for reusing the autoconf cache.
dnl
dnl If we've packaged config.guess and config.sub, run that (since it does a
dnl better job than uname). Normally we'll use AC_CANONICAL_HOST, but allow
dnl an extra parameter that we may override, e.g., for AC_CANONICAL_SYSTEM
dnl which is useful in cross-compiles.
dnl
dnl Note: we would use $ac_config_sub, but that is one of the places where
dnl autoconf 2.5x broke compatibility with autoconf 2.13
AC_DEFUN([CF_CHECK_CACHE],
[
if test -f "$srcdir/config.guess" || test -f "$ac_aux_dir/config.guess" ; then
ifelse([$1],,[AC_CANONICAL_HOST],[$1])
system_name="$host_os"
else
system_name="`(uname -s -r) 2>/dev/null`"
if test -z "$system_name" ; then
system_name="`(hostname) 2>/dev/null`"
fi
fi
test -n "$system_name" && AC_DEFINE_UNQUOTED(SYSTEM_NAME,"$system_name",[Define to the system name.])
AC_CACHE_VAL(cf_cv_system_name,[cf_cv_system_name="$system_name"])
test -z "$system_name" && system_name="$cf_cv_system_name"
test -n "$cf_cv_system_name" && AC_MSG_RESULT(Configuring for $cf_cv_system_name)
if test ".$system_name" != ".$cf_cv_system_name" ; then
AC_MSG_RESULT(Cached system name ($system_name) does not agree with actual ($cf_cv_system_name))
AC_MSG_ERROR("Please remove config.cache and try again.")
fi
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_CLANG_COMPILER version: 9 updated: 2023/02/18 17:41:25
dnl -----------------
dnl Check if the given compiler is really clang. clang's C driver defines
dnl __GNUC__ (fooling the configure script into setting $GCC to yes) but does
dnl not ignore some gcc options.
dnl
dnl This macro should be run "soon" after AC_PROG_CC or AC_PROG_CPLUSPLUS, to
dnl ensure that it is not mistaken for gcc/g++. It is normally invoked from
dnl the wrappers for gcc and g++ warnings.
dnl
dnl $1 = GCC (default) or GXX
dnl $2 = CLANG_COMPILER (default)
dnl $3 = CFLAGS (default) or CXXFLAGS
AC_DEFUN([CF_CLANG_COMPILER],[
ifelse([$2],,CLANG_COMPILER,[$2])=no
if test "$ifelse([$1],,[$1],GCC)" = yes ; then
AC_MSG_CHECKING(if this is really Clang ifelse([$1],GXX,C++,C) compiler)
cf_save_CFLAGS="$ifelse([$3],,CFLAGS,[$3])"
AC_TRY_COMPILE([],[
#ifdef __clang__
#else
#error __clang__ is not defined
#endif
],[ifelse([$2],,CLANG_COMPILER,[$2])=yes
],[])
ifelse([$3],,CFLAGS,[$3])="$cf_save_CFLAGS"
AC_MSG_RESULT($ifelse([$2],,CLANG_COMPILER,[$2]))
fi
CLANG_VERSION=none
if test "x$ifelse([$2],,CLANG_COMPILER,[$2])" = "xyes" ; then
case "$CC" in
(c[[1-9]][[0-9]]|*/c[[1-9]][[0-9]])
AC_MSG_WARN(replacing broken compiler alias $CC)
CFLAGS="$CFLAGS -std=`echo "$CC" | sed -e 's%.*/%%'`"
CC=clang
;;
esac
AC_MSG_CHECKING(version of $CC)
CLANG_VERSION="`$CC --version 2>/dev/null | sed -e '2,$d' -e 's/^.*(CLANG[[^)]]*) //' -e 's/^.*(Debian[[^)]]*) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
test -z "$CLANG_VERSION" && CLANG_VERSION=unknown
AC_MSG_RESULT($CLANG_VERSION)
for cf_clang_opt in \
-Qunused-arguments \
-Wno-error=implicit-function-declaration
do
AC_MSG_CHECKING(if option $cf_clang_opt works)
cf_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $cf_clang_opt"
AC_TRY_LINK([
#include <stdio.h>],[
printf("hello!\\n");],[
cf_clang_optok=yes],[
cf_clang_optok=no])
AC_MSG_RESULT($cf_clang_optok)
CFLAGS="$cf_save_CFLAGS"
if test "$cf_clang_optok" = yes; then
CF_VERBOSE(adding option $cf_clang_opt)
CF_APPEND_TEXT(CFLAGS,$cf_clang_opt)
fi
done
fi
])
dnl ---------------------------------------------------------------------------
dnl CF_CONST_X_STRING version: 8 updated: 2023/12/01 17:22:50
dnl -----------------
dnl The X11R4-X11R6 Xt specification uses an ambiguous String type for most
dnl character-strings.
dnl
dnl It is ambiguous because the specification accommodated the pre-ANSI
dnl compilers bundled by more than one vendor in lieu of providing a standard C
dnl compiler other than by costly add-ons. Because of this, the specification
dnl did not take into account the use of const for telling the compiler that
dnl string literals would be in readonly memory.
dnl
dnl As a workaround, one could (starting with X11R5) define XTSTRINGDEFINES, to
dnl let the compiler decide how to represent Xt's strings which were #define'd.
dnl That does not solve the problem of using the block of Xt's strings which
dnl are compiled into the library (and is less efficient than one might want).
dnl
dnl Xt specification 7 introduces the _CONST_X_STRING symbol which is used both
dnl when compiling the library and compiling using the library, to tell the
dnl compiler that String is const.
AC_DEFUN([CF_CONST_X_STRING],
[
AC_REQUIRE([AC_PATH_XTRA])
CF_SAVE_XTRA_FLAGS([CF_CONST_X_STRING])
AC_TRY_COMPILE(
[
#include <stdlib.h>
#include <X11/Intrinsic.h>
],
[String foo = malloc(1); free((void*)foo)],[
AC_CACHE_CHECK(for X11/Xt const-feature,cf_cv_const_x_string,[
AC_TRY_COMPILE(
[
#undef _CONST_X_STRING
#define _CONST_X_STRING /* X11R7.8 (perhaps) */
#undef XTSTRINGDEFINES /* X11R5 and later */
#include <stdlib.h>
#include <X11/Intrinsic.h>
],[String foo = malloc(1); *foo = 0],[
cf_cv_const_x_string=no
],[
cf_cv_const_x_string=yes
])
])
CF_RESTORE_XTRA_FLAGS([CF_CONST_X_STRING])
case "$cf_cv_const_x_string" in
(no)
CF_APPEND_TEXT(CPPFLAGS,-DXTSTRINGDEFINES)
;;
(*)
CF_APPEND_TEXT(CPPFLAGS,-D_CONST_X_STRING)
;;
esac
])
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_CURSES_CHECK_DATA version: 10 updated: 2021/01/04 19:45:09
dnl --------------------
dnl Check if curses.h defines the given data/variable.
dnl Use this after CF_NCURSES_CONFIG or CF_CURSES_CONFIG.
dnl
dnl $1 = data item(s) to check for
dnl $2 = action on success, e.g., "break" to quit checking a series of choices
AC_DEFUN([CF_CURSES_CHECK_DATA],
[
for cf_data in $1
do
AC_MSG_CHECKING(for data $cf_data declaration in ${cf_cv_ncurses_header:-curses.h})
AC_TRY_COMPILE(CF__CURSES_HEAD,
CF__CURSES_DATA(foo,$cf_data)
,[cf_result=yes
],[cf_result=no])
AC_MSG_RESULT($cf_result)
if test "$cf_result" = yes ; then
CF_UPPER(cf_result,have_curses_data_$cf_data)
AC_DEFINE_UNQUOTED($cf_result)
ifelse($2,,,[$2])
else
AC_MSG_CHECKING(for data $cf_data in library)
# BSD linkers insist on making weak linkage, but resolve at runtime.
AC_TRY_RUN(CF__CURSES_HEAD
[
extern char $cf_data;
int main(void)
{
]CF__CURSES_DATA(foo,$cf_data)[
${cf_cv_main_return:-return}(foo == 0);
}],[cf_result=yes
],[cf_result=no],[
# cross-compiling
AC_TRY_LINK(CF__CURSES_HEAD
[extern char $cf_data;],[
do {
]CF__CURSES_DATA(foo,$cf_data)[
${cf_cv_main_return:-return}(foo == 0);
} while (0)
],[cf_result=yes],[cf_result=no])
])
AC_MSG_RESULT($cf_result)
if test "$cf_result" = yes ; then
CF_UPPER(cf_result,decl_curses_data_$cf_data)
AC_DEFINE_UNQUOTED($cf_result)
# do not exit loop here, since we prefer system's declarations
fi
fi
done
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_CURSES_CONFIG version: 2 updated: 2006/10/29 11:06:27
dnl ----------------
dnl Tie together the configure-script macros for curses. It may be ncurses,
dnl but unless asked, we do not make a special search for ncurses. However,
dnl still check for the ncurses version number, for use in other macros.
AC_DEFUN([CF_CURSES_CONFIG],
[
CF_CURSES_CPPFLAGS
CF_NCURSES_VERSION
CF_CURSES_LIBS
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_CURSES_CPPFLAGS version: 14 updated: 2021/01/02 09:31:20
dnl ------------------
dnl Look for the curses headers.
AC_DEFUN([CF_CURSES_CPPFLAGS],[
AC_CACHE_CHECK(for extra include directories,cf_cv_curses_incdir,[
cf_cv_curses_incdir=no
case "$host_os" in
(hpux10.*)
if test "x$cf_cv_screen" = "xcurses_colr"
then
test -d /usr/include/curses_colr && \
cf_cv_curses_incdir="-I/usr/include/curses_colr"
fi
;;
(sunos3*|sunos4*)
if test "x$cf_cv_screen" = "xcurses_5lib"
then
test -d /usr/5lib && \
test -d /usr/5include && \
cf_cv_curses_incdir="-I/usr/5include"
fi
;;
esac
])
if test "$cf_cv_curses_incdir" != no
then
CF_APPEND_TEXT(CPPFLAGS,$cf_cv_curses_incdir)
fi
CF_CURSES_HEADER
CF_TERM_HEADER
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_CURSES_HEADER version: 6 updated: 2022/12/02 20:06:52
dnl ----------------
dnl Find a "curses" header file, e.g,. "curses.h", or one of the more common
dnl variations of ncurses' installs.
dnl
dnl $1 = ncurses when looking for ncurses, or is empty
AC_DEFUN([CF_CURSES_HEADER],[
AC_CACHE_CHECK(if we have identified curses headers,cf_cv_ncurses_header,[
cf_cv_ncurses_header=none
for cf_header in \
ncurses.h ifelse($1,,,[$1/ncurses.h]) \
curses.h ifelse($1,,,[$1/curses.h]) ifelse($1,,[ncurses/ncurses.h ncurses/curses.h])
do
AC_TRY_COMPILE([#include <${cf_header}>],
[initscr(); endwin()],
[cf_cv_ncurses_header=$cf_header; break],[])
done
])
if test "$cf_cv_ncurses_header" = none ; then
AC_MSG_ERROR(No curses header-files found)
fi
# cheat, to get the right #define's for HAVE_NCURSES_H, etc.
AC_CHECK_HEADERS($cf_cv_ncurses_header)
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_CURSES_LIBS version: 45 updated: 2022/12/02 20:06:52
dnl --------------
dnl Look for the curses libraries. Older curses implementations may require
dnl termcap/termlib to be linked as well. Call CF_CURSES_CPPFLAGS first.
AC_DEFUN([CF_CURSES_LIBS],[
AC_REQUIRE([CF_CURSES_CPPFLAGS])dnl
AC_MSG_CHECKING(if we have identified curses libraries)
AC_TRY_LINK([#include <${cf_cv_ncurses_header:-curses.h}>],
[initscr(); endwin()],
cf_result=yes,
cf_result=no)
AC_MSG_RESULT($cf_result)
if test "$cf_result" = no ; then
case "$host_os" in
(freebsd*)
AC_CHECK_LIB(mytinfo,tgoto,[CF_ADD_LIBS(-lmytinfo)])
;;
(hpux10.*)
# Looking at HPUX 10.20, the Hcurses library is the oldest (1997), cur_colr
# next (1998), and xcurses "newer" (2000). There is no header file for
# Hcurses; the subdirectory curses_colr has the headers (curses.h and
# term.h) for cur_colr
if test "x$cf_cv_screen" = "xcurses_colr"
then
AC_CHECK_LIB(cur_colr,initscr,[
CF_ADD_LIBS(-lcur_colr)
ac_cv_func_initscr=yes
],[
AC_CHECK_LIB(Hcurses,initscr,[
# HP's header uses __HP_CURSES, but user claims _HP_CURSES.
CF_ADD_LIBS(-lHcurses)
CF_APPEND_TEXT(CPPFLAGS,-D__HP_CURSES -D_HP_CURSES)
ac_cv_func_initscr=yes
])])
fi
;;
(linux*)
case `arch 2>/dev/null` in
(x86_64)
if test -d /lib64
then
CF_ADD_LIBDIR(/lib64)
else
CF_ADD_LIBDIR(/lib)
fi
;;
(*)
CF_ADD_LIBDIR(/lib)
;;
esac
;;
(sunos3*|sunos4*)
if test "x$cf_cv_screen" = "xcurses_5lib"
then
if test -d /usr/5lib ; then
CF_ADD_LIBDIR(/usr/5lib)
CF_ADD_LIBS(-lcurses -ltermcap)
fi
fi
ac_cv_func_initscr=yes
;;
esac
if test ".$ac_cv_func_initscr" != .yes ; then
cf_save_LIBS="$LIBS"
if test ".${cf_cv_ncurses_version:-no}" != .no
then
cf_check_list="ncurses curses cursesX"
else
cf_check_list="cursesX curses ncurses"
fi
# Check for library containing tgoto. Do this before curses library
# because it may be needed to link the test-case for initscr.
if test "x$cf_term_lib" = x
then
AC_CHECK_FUNC(tgoto,[cf_term_lib=predefined],[
for cf_term_lib in $cf_check_list otermcap termcap tinfo termlib unknown
do
AC_CHECK_LIB($cf_term_lib,tgoto,[
: "${cf_nculib_root:=$cf_term_lib}"
break
])
done