gcc/libgm2/configure.ac
Gaius Mulley d1a1f7e9f0 PR modula2/115276 bugfix libgm2 wraptime.InitTM returns NIL
This patch fixes libgm2/libm2iso/wraptime.cc:InitTM so that
it does not always return NULL.  The incorrect autoconf macro
was used (inside InitTM) and the function short circuited
to return NULL.  The fix is to use HAVE_SYS_TIME_H and use
AC_HEADER_TIME in libgm2/configure.ac.

libgm2/ChangeLog:

	PR modula2/115276
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Use AC_HEADER_TIME.
	* libm2iso/wraptime.cc (InitTM): Check HAVE_SYS_TIME_H
	before using struct tm to obtain the size.

gcc/testsuite/ChangeLog:

	PR modula2/115276
	* gm2/isolib/run/pass/testinittm.mod: New test.

Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com>
2024-05-29 17:26:59 +01:00

480 lines
14 KiB
Plaintext

# Configure script for libgm2.
# Copyright (C) 2013-2023 Free Software Foundation, Inc.
# This file is part of GCC.
# GCC is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
# GCC is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
# Configure looks for the existence of this file to auto-config each language.
# We define several parameters used by configure:
# Process this file with autoreconf to produce a configure script.
AC_INIT(package-unused, version-unused,,libgm2)
AC_CONFIG_SRCDIR(Makefile.am)
# AC_CONFIG_MACRO_DIR([config])
AC_CONFIG_HEADER(config.h)
libtool_VERSION=19:0:0
AC_SUBST(libtool_VERSION)
AM_ENABLE_MULTILIB(, ..)
GCC_NO_EXECUTABLES
AC_USE_SYSTEM_EXTENSIONS
# Do not delete or change the following two lines. For why, see
# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
AC_CANONICAL_SYSTEM
target_alias=${target_alias-$host_alias}
AC_SUBST(target_alias)
if test "$build" != "$host"; then
# We are being configured with some form of cross compiler.
GLIBCXX_IS_NATIVE=false
case "$host","$target" in
# Darwin crosses can use the host system's libraries and headers,
# because of the fat library support. Of course, it must be the
# same version of Darwin on both sides. Allow the user to
# just say --target=foo-darwin without a version number to mean
# "the version on this system".
*-*-darwin*,*-*-darwin*)
hostos=`echo $host | sed 's/.*-darwin/darwin/'`
targetos=`echo $target | sed 's/.*-darwin/darwin/'`
if test $hostos = $targetos || test $targetos = darwin ; then
GLIBCXX_IS_NATIVE=true
fi
;;
*)
GCC_NO_EXECUTABLES
;;
esac
else
GLIBCXX_IS_NATIVE=true
fi
# Runs configure.host, and assorted other critical bits. Sets
# up critical shell variables.
GLIBCXX_CONFIGURE
# For gettimeofday support.
GLIBCXX_CHECK_GETTIMEOFDAY
# For clock_gettime, nanosleep and sched_yield support.
GLIBCXX_ENABLE_LIBSTDCXX_TIME
AM_INIT_AUTOMAKE([1.15.1 no-define foreign no-dist -Wall -Wno-portability])
AH_TEMPLATE(PACKAGE, [Name of package])
AH_TEMPLATE(VERSION, [Version number of package])
AC_ARG_WITH(cross-host,
[ --with-cross-host=HOST Configuring with a cross compiler])
# Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_HEADER_TIME
AC_CHECK_HEADER([math.h],
[AC_DEFINE([HAVE_MATH_H], [1], [have math.h])])
AC_CHECK_HEADERS(getopt.h limits.h stddef.h string.h strings.h \
stdlib.h time.h \
fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
sys/resource.h sys/param.h sys/times.h sys/stat.h \
sys/socket.h \
sys/wait.h sys/ioctl.h errno.h sys/errno.h \
pwd.h direct.h dirent.h signal.h malloc.h langinfo.h \
pthread.h stdarg.h stdio.h sys/types.h termios.h \
netinet/in.h netdb.h sys/uio.h sys/stat.h wchar.h)
AC_CANONICAL_HOST
ACX_NONCANONICAL_HOST
ACX_NONCANONICAL_TARGET
GCC_TOPLEV_SUBDIRS
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
AC_ARG_ENABLE(version-specific-runtime-libs,
[ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
[case "$enableval" in
yes) version_specific_libs=yes ;;
no) version_specific_libs=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
esac],
[version_specific_libs=no])
AC_MSG_RESULT($version_specific_libs)
AC_ARG_WITH(slibdir,
[ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
slibdir="$with_slibdir",
if test "${version_specific_libs}" = yes; then
slibdir='$(libsubdir)'
elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then
slibdir='$(exec_prefix)/$(host_noncanonical)/lib'
else
slibdir='$(libdir)'
fi)
AC_SUBST(slibdir)
# Command-line options.
# Very limited version of AC_MAINTAINER_MODE.
AC_ARG_ENABLE([maintainer-mode],
[AC_HELP_STRING([--enable-maintainer-mode],
[enable make rules and dependencies not useful (and
sometimes confusing) to the casual installer])],
[case ${enable_maintainer_mode} in
yes) MAINT='' ;;
no) MAINT='#' ;;
*) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;;
esac
maintainer_mode=${enableval}],
[MAINT='#'])
AC_SUBST([MAINT])dnl
toolexecdir=no
toolexeclibdir=no
# Calculate toolexeclibdir
# Also toolexecdir, though it's only used in toolexeclibdir
case ${version_specific_libs} in
yes)
# Need the gcc compiler version to know where to install libraries
# and header files if --enable-version-specific-runtime-libs option
# is selected.
toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
;;
no)
if test -n "$with_cross_host" &&
test x"$with_cross_host" != x"no"; then
# Install a library built with a cross compiler in tooldir, not libdir.
toolexecdir='$(exec_prefix)/$(target_noncanonical)'
toolexeclibdir='$(toolexecdir)/lib'
else
toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
toolexeclibdir='$(libdir)'
fi
multi_os_directory=`$CC -print-multi-os-directory`
case $multi_os_directory in
.) ;; # Avoid trailing /.
*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
esac
;;
esac
AC_SUBST(toolexecdir)
AC_SUBST(toolexeclibdir)
AH_TEMPLATE(PACKAGE, [Name of package])
AH_TEMPLATE(VERSION, [Version number of package])
AM_MAINTAINER_MODE
# Check the compiler.
# The same as in boehm-gc and libstdc++. Have to borrow it from there.
# We must force CC to /not/ be precious variables; otherwise
# the wrong, non-multilib-adjusted value will be used in multilibs.
# As a side effect, we have to subst CFLAGS ourselves.
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
m4_define([_AC_ARG_VAR_PRECIOUS],[])
AC_PROG_CC
AC_PROG_CXX
AM_PROG_AS
m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
AC_SUBST(CFLAGS)
# In order to override CFLAGS_FOR_TARGET, all of our special flags go
# in XCFLAGS. But we need them in CFLAGS during configury. So put them
# in both places for now and restore CFLAGS at the end of config.
save_CFLAGS="$CFLAGS"
# Find other programs we need.
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(NM, nm)
AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
AC_PROG_MAKE_SET
AC_PROG_INSTALL
AM_PROG_LIBTOOL
LT_INIT
AC_LIBTOOL_DLOPEN
AM_CONDITIONAL([ENABLE_DARWIN_AT_RPATH], [test x$enable_darwin_at_rpath = xyes])
AC_SUBST(enable_shared)
AC_SUBST(enable_static)
if test "${multilib}" = "yes"; then
multilib_arg="--enable-multilib"
else
multilib_arg=
fi
AC_CHECK_TYPES([struct timezone, struct stat, struct timespec, struct timeval, struct tm])
# Check if struct tm contains the tm_gmtoff field.
AC_CACHE_CHECK(for tm_gmtoff in struct tm, ac_cv_struct_tm_gmtoff,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <time.h>
], [
struct tm tm;
tm.tm_gmtoff = 1;
])],
[ac_cv_struct_tm_gmtoff=yes],
[ac_cv_struct_tm_gmtoff=no]
)
)
if (test "$ac_cv_struct_tm_gmtoff" = "yes"); then
AC_MSG_CHECKING([m2 front end detects struct tm with the tm_gmtoff field.])
AC_DEFINE(HAVE_TM_TM_GMTOFF, 1, [Define if struct tm has a tm_gmtoff field.])
fi
AC_LANG_C
# Check the compiler.
# The same as in boehm-gc and libstdc++. Have to borrow it from there.
# We must force CC to /not/ be precious variables; otherwise
# the wrong, non-multilib-adjusted value will be used in multilibs.
# As a side effect, we have to subst CFLAGS ourselves.
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
m4_define([_AC_ARG_VAR_PRECIOUS],[])
AC_PROG_CC
m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
AC_SUBST(CFLAGS)
AC_DEFUN([GM2_UNDEF],[
$as_echo "#undef HAVE_$1" >>confdefs.h
])
AC_DEFUN([GM2_CHECK_LIB],[
AC_MSG_CHECKING([m2 front end checking $1 library for $2])
if test x$gcc_no_link != xyes; then
AC_CHECK_LIB([$1],[$2],[AC_DEFINE([HAVE_$3],[1],[found $2])],[GM2_UNDEF([$3],[$2])])
else
if test "x$[ac_cv_lib_$1_$2]" = xyes; then
AC_DEFINE([HAVE_$3],[1],[lib$1 includes $2])
elif test "x$[ac_cv_func_$2]" = xyes; then
AC_DEFINE([HAVE_$3],[1],[function $2 exists])
else
GM2_UNDEF([$3],[$2])
fi
fi
])
GM2_CHECK_LIB([c],[access],[ACCESS])
GM2_CHECK_LIB([c],[brk],[BRK])
GM2_CHECK_LIB([c],[cfmakeraw],[CFMAKERAW])
GM2_CHECK_LIB([c],[clock_gettime],[CLOCK_GETTIME])
GM2_CHECK_LIB([c],[clock_settime],[CLOCK_SETTIME])
GM2_CHECK_LIB([c],[close],[CLOSE])
GM2_CHECK_LIB([c],[ctime],[CTIME])
GM2_CHECK_LIB([c],[creat],[CREAT])
GM2_CHECK_LIB([c],[daylight],[DAYLIGHT])
GM2_CHECK_LIB([c],[dup],[DUP])
GM2_CHECK_LIB([c],[execve],[EXECVE])
GM2_CHECK_LIB([c],[exit],[EXIT])
GM2_CHECK_LIB([c],[fcntl],[FCNTL])
GM2_CHECK_LIB([c],[fstat],[FSTAT])
GM2_CHECK_LIB([c],[getdents],[GETDENTS])
GM2_CHECK_LIB([c],[getgid],[GETGID])
GM2_CHECK_LIB([c],[getopt_long],[GETOPT_LONG])
GM2_CHECK_LIB([c],[getopt_long_only],[GETOPT_LONG_ONLY])
GM2_CHECK_LIB([c],[getpid],[GETPID])
GM2_CHECK_LIB([c],[gettimeofday],[GETTIMEOFDAY])
GM2_CHECK_LIB([c],[getuid],[GETUID])
GM2_CHECK_LIB([c],[ioctl],[IOCTL])
GM2_CHECK_LIB([c],[kill],[KILL])
GM2_CHECK_LIB([c],[link],[LINK])
GM2_CHECK_LIB([c],[lseek],[LSEEK])
GM2_CHECK_LIB([c],[open],[OPEN])
GM2_CHECK_LIB([c],[pause],[PAUSE])
GM2_CHECK_LIB([c],[pipe],[PIPE])
GM2_CHECK_LIB([c],[rand],[RAND])
GM2_CHECK_LIB([c],[read],[READ])
GM2_CHECK_LIB([c],[select],[SELECT])
GM2_CHECK_LIB([c],[setitimer],[SETITIMER])
GM2_CHECK_LIB([c],[setgid],[SETGID])
GM2_CHECK_LIB([c],[settimeofday],[SETTIMEOFDAY])
GM2_CHECK_LIB([c],[setuid],[SETUID])
GM2_CHECK_LIB([c],[stat],[STAT])
GM2_CHECK_LIB([c],[strsignal],[STRSIGNAL])
GM2_CHECK_LIB([c],[strtod],[STRTOD])
GM2_CHECK_LIB([c],[strtold],[STRTOLD])
GM2_CHECK_LIB([c],[times],[TIMES])
GM2_CHECK_LIB([c],[timezone],[TIMEZONE])
GM2_CHECK_LIB([c],[tzname],[TZNAME])
GM2_CHECK_LIB([c],[unlink],[UNLINK])
GM2_CHECK_LIB([c],[wait],[WAIT])
GM2_CHECK_LIB([c],[write],[WRITE])
GM2_CHECK_LIB([m],[exp10],[EXP10])
GM2_CHECK_LIB([m],[exp10f],[EXP10F])
GM2_CHECK_LIB([m],[exp10l],[EXP10L])
GM2_CHECK_LIB([m],[signbit],[SIGNBIT])
GM2_CHECK_LIB([m],[signbitf],[SIGNBITF])
GM2_CHECK_LIB([m],[signbitl],[SIGNBITL])
AC_CHECK_DECLS([getenv])
AC_MSG_NOTICE([libgm2 has finished checking target libc and libm contents.])
# We test the host here and later on check the target.
# All known M2_HOST_OS values. This is the union of all host operating systems
# supported by gm2.
M2_SUPPORTED_HOST_OS="aix freebsd hurd linux netbsd openbsd solaris windows darwin"
M2_HOST_OS=unknown
case ${host} in
*-*-darwin*) M2_HOST_OS=darwin ;;
*-*-freebsd*) M2_HOST_OS=freebsd ;;
*-*-linux*) M2_HOST_OS=linux ;;
*-*-netbsd*) M2_HOST_OS=netbsd ;;
*-*-openbsd*) M2_HOST_OS=openbsd ;;
*-*-solaris2*) M2_HOST_OS=solaris ;;
*-*-aix*) M2_HOST_OS=aix ;;
*-*-gnu*) M2_HOST_OS=hurd ;;
esac
M2_TARGET_OS=unknown
case ${target} in
*-*-darwin*) M2_TARGET_OS=darwin ;;
*-*-freebsd*) M2_TARGET_OS=freebsd ;;
*-*-linux*) M2_TARGET_OS=linux ;;
*-*-netbsd*) M2_TARGET_OS=netbsd ;;
*-*-openbsd*) M2_TARGET_OS=openbsd ;;
*-*-solaris2*) M2_TARGET_OS=solaris ;;
*-*-aix*) M2_TARGET_OS=aix ;;
*-*-gnu*) M2_TARGET_OS=hurd ;;
esac
# M2_HOST_OS=unknown
if test x${M2_HOST_OS} = xunknown; then
AC_MSG_NOTICE([unsupported host, will build a minimal m2 library])
BUILD_PIMLIB=false
BUILD_ISOLIB=false
BUILD_CORLIB=false
BUILD_LOGLIB=false
else
AC_MSG_NOTICE([m2 library will be built on ${M2_HOST_OS}])
BUILD_PIMLIB=true
BUILD_ISOLIB=true
BUILD_CORLIB=true
BUILD_LOGLIB=true
fi
CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
AC_SUBST(CC_FOR_BUILD)
# Propagate GM2_FOR_TARGET into Makefiles
GM2_FOR_TARGET=${GM2_FOR_TARGET:-gcc}
AC_SUBST(GM2_FOR_TARGET)
# Now we check the target as long as it is a supported host.
# For some embedded targets we choose minimal runtime system which is
# just enough to satisfy the linker targetting raw metal.
if test x${M2_HOST_OS} != xunknown; then
AC_MSG_NOTICE([m2 library building for target ${target}])
case "$target" in
avr25*-*-* | avr31*-*-* | avr35*-*-* | avr4*-*-* | avr5*-*-* | avr51*-*-* | avr6*-*-*)
BUILD_PIMLIB=false
BUILD_ISOLIB=false
BUILD_CORLIB=false
BUILD_LOGLIB=false
;;
avrxmega2*-*-* | avrxmega4*-*-* | avrxmega5*-*-* | avrxmega6*-*-* | avrxmega7*-*-*)
BUILD_PIMLIB=false
BUILD_ISOLIB=false
BUILD_CORLIB=false
BUILD_LOGLIB=false
;;
avr3-*-*)
BUILD_PIMLIB=true
BUILD_ISOLIB=true
BUILD_CORLIB=true
BUILD_LOGLIB=true
;;
esp32-*-*)
BUILD_PIMLIB=false
BUILD_ISOLIB=false
BUILD_CORLIB=false
BUILD_LOGLIB=false
;;
esac
fi
# GM2_MSG_RESULT issue a query message from the first parameter and a boolean result
# in the second parameter is printed as a "yes" or "no".
AC_DEFUN([GM2_MSG_RESULT],[
AC_MSG_CHECKING([$1])
if test x${$2} = xtrue; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
])
if test x${M2_HOST_OS} = xunknown; then
AC_MSG_NOTICE([m2 front end will only build minimal Modula-2 runtime library on this host])
else
GM2_MSG_RESULT([m2 front end will build PIM libraries:],[BUILD_PIMLIB])
GM2_MSG_RESULT([m2 front end will build ISO libraries:],[BUILD_ISOLIB])
GM2_MSG_RESULT([m2 front end will build coroutine libraries:],[BUILD_CORLIB])
GM2_MSG_RESULT([m2 front end will build Logitech compatability libraries:],[BUILD_LOGLIB])
fi
AM_CONDITIONAL([BUILD_PIMLIB], [test x$BUILD_PIMLIB = xtrue])
AM_CONDITIONAL([BUILD_ISOLIB], [test x$BUILD_ISOLIB = xtrue])
AM_CONDITIONAL([BUILD_CORLIB], [test x$BUILD_CORLIB = xtrue])
AM_CONDITIONAL([BUILD_LOGLIB], [test x$BUILD_LOGLIB = xtrue])
AM_CONDITIONAL([TARGET_DARWIN], [test x$M2_TARGET_OS = xdarwin])
# Determine what GCC version number to use in filesystem paths.
GCC_BASE_VER
AC_CONFIG_SRCDIR([Makefile.am])
AC_CONFIG_FILES([Makefile])
AC_CONFIG_FILES(AC_FOREACH([DIR], [libm2min libm2pim libm2iso libm2cor libm2log], [DIR/Makefile ]),
[ cat > vpsed$$ << \_EOF
s!`test -f '$<' || echo '$(srcdir)/'`!!
_EOF
sed -f vpsed$$ $ac_file > tmp$$
mv tmp$$ $ac_file
rm vpsed$$
echo 'MULTISUBDIR =' >> $ac_file
ml_norecursion=yes
. ${multi_basedir}/config-ml.in
AS_UNSET([ml_norecursion])
])
AC_MSG_NOTICE([libgm2 has been configured.])
AC_OUTPUT