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dnl Copyright (C) 1997-2023 Free Software Foundation, Inc.
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 3 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program. If not, see <http://www.gnu.org/licenses/>.
dnl
dnl Check for various platform settings.
AC_DEFUN([SIM_AC_PLATFORM],
[dnl
dnl Check for common headers.
dnl NB: You can assume C11 headers exist.
dnl NB: We use gnulib from ../gnulib/, so we don't probe headers it provides.
AC_CHECK_HEADERS_ONCE(m4_flatten([
dlfcn.h
fcntl.h
fpu_control.h
termios.h
utime.h
linux/if_tun.h
linux/mii.h
linux/types.h
net/if.h
netinet/in.h
netinet/tcp.h
sys/ioctl.h
sys/mman.h
sys/mount.h
sys/param.h
sys/resource.h
sys/socket.h
sys/stat.h
sys/statfs.h
sys/termio.h
sys/termios.h
sys/types.h
sys/vfs.h
]))
AC_HEADER_DIRENT
dnl NB: We use gnulib from ../gnulib/, so we don't probe functions it provides.
AC_CHECK_FUNCS_ONCE(m4_flatten([
__setfpucw
access
aint
anint
cfgetispeed
cfgetospeed
cfsetispeed
cfsetospeed
chdir
chmod
dup
dup2
execv
execve
fcntl
fork
fstat
fstatfs
ftruncate
getdirentries
getegid
geteuid
getgid
getpid
getppid
getrusage
gettimeofday
getuid
ioctl
kill
link
lseek
lstat
mkdir
mmap
munmap
pipe
posix_fallocate
pread
rmdir
setregid
setreuid
setgid
setuid
sigaction
sigprocmask
sqrt
stat
strsignal
symlink
tcdrain
tcflow
tcflush
tcgetattr
tcgetpgrp
tcsendbreak
tcsetattr
tcsetpgrp
time
truncate
umask
unlink
utime
]))
AC_STRUCT_ST_BLKSIZE
AC_STRUCT_ST_BLOCKS
AC_STRUCT_ST_RDEV
AC_STRUCT_TIMEZONE
AC_CHECK_MEMBERS([[struct stat.st_dev], [struct stat.st_ino],
[struct stat.st_mode], [struct stat.st_nlink], [struct stat.st_uid],
[struct stat.st_gid], [struct stat.st_rdev], [struct stat.st_size],
[struct stat.st_blksize], [struct stat.st_blocks], [struct stat.st_atime],
[struct stat.st_mtime], [struct stat.st_ctime]], [], [],
[[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif]])
AC_CHECK_TYPES([__int128])
AC_CHECK_TYPES(socklen_t, [], [],
[#include <sys/types.h>
#include <sys/socket.h>
])
dnl Types used by common code
AC_TYPE_GETGROUPS
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIGNAL
AC_TYPE_SIZE_T
AC_TYPE_UID_T
LT_INIT
dnl Libraries.
AC_SEARCH_LIBS([bind], [socket])
AC_SEARCH_LIBS([gethostbyname], [nsl])
AC_SEARCH_LIBS([fabs], [m])
AC_SEARCH_LIBS([log2], [m])
AC_SEARCH_LIBS([dlopen], [dl])
if test "${ac_cv_lib_dl_dlopen}" = "yes"; then
PKG_CHECK_MODULES(SDL, sdl2, [dnl
SDL_CFLAGS="${SDL_CFLAGS} -DHAVE_SDL=2"
], [
PKG_CHECK_MODULES(SDL, sdl, [dnl
SDL_CFLAGS="${SDL_CFLAGS} -DHAVE_SDL=1"
], [:])
])
dnl If we use SDL, we need dlopen support.
AS_IF([test -n "$SDL_CFLAGS"], [dnl
AS_IF([test "$ac_cv_search_dlopen" = no], [dnl
AC_MSG_WARN([SDL support requires dlopen support])
])
])
else
SDL_CFLAGS=
fi
dnl We dlopen the libs at runtime, so never pass down SDL_LIBS.
SDL_LIBS=
AC_SUBST(SDL_CFLAGS)
dnl In the Cygwin environment, we need some additional flags.
AC_CACHE_CHECK([for cygwin], sim_cv_os_cygwin,
[AC_EGREP_CPP(lose, [
#ifdef __CYGWIN__
lose
#endif],[sim_cv_os_cygwin=yes],[sim_cv_os_cygwin=no])])
dnl Keep in sync with gdb's configure.ac list.
AC_SEARCH_LIBS(tgetent, [termcap tinfo curses ncurses],
[TERMCAP_LIB=$ac_cv_search_tgetent], [TERMCAP_LIB=""])
if test x$sim_cv_os_cygwin = xyes; then
TERMCAP_LIB="${TERMCAP_LIB} -luser32"
fi
AC_SUBST(TERMCAP_LIB)
dnl We prefer the in-tree readline. Top-level dependencies make sure
dnl src/readline (if it's there) is configured before src/sim.
if test -r ../readline/Makefile; then
READLINE_LIB=../readline/readline/libreadline.a
READLINE_CFLAGS='-I$(READLINE_SRC)/..'
else
AC_CHECK_LIB(readline, readline, READLINE_LIB=-lreadline,
AC_ERROR([the required "readline" library is missing]), $TERMCAP_LIB)
READLINE_CFLAGS=
fi
AC_SUBST(READLINE_LIB)
AC_SUBST(READLINE_CFLAGS)
dnl Determine whether we have a known getopt prototype in unistd.h
dnl to make sure that we have correct getopt declaration on
dnl include/getopt.h. The purpose of this is to sync with other Binutils
dnl components and this logic is copied from ld/configure.ac.
AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
AC_CACHE_VAL(sim_cv_decl_getopt_unistd_h,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])],
sim_cv_decl_getopt_unistd_h=yes, sim_cv_decl_getopt_unistd_h=no)])
AC_MSG_RESULT($sim_cv_decl_getopt_unistd_h)
if test $sim_cv_decl_getopt_unistd_h = yes; then
AC_DEFINE([HAVE_DECL_GETOPT], 1,
[Is the prototype for getopt in <unistd.h> in the expected format?])
fi
])
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