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aclocal.m4
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aclocal.m4
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nl
dnl Bash specific tests
dnl
dnl Some derived from PDKSH 5.1.3 autoconf tests
dnl
AC_DEFUN(BASH_C_LONG_LONG,
[AC_CACHE_CHECK(for long long, ac_cv_c_long_long,
[if test "$GCC" = yes; then
ac_cv_c_long_long=yes
else
AC_TRY_RUN([
int
main()
{
long long foo = 0;
exit(sizeof(long long) < sizeof(long));
}
], ac_cv_c_long_long=yes, ac_cv_c_long_long=no)
fi])
if test $ac_cv_c_long_long = yes; then
AC_DEFINE(HAVE_LONG_LONG, 1, [Define if the `long long' type works.])
fi
])
dnl
dnl This is very similar to AC_C_LONG_DOUBLE, with the fix for IRIX
dnl (< changed to <=) added.
dnl
AC_DEFUN(BASH_C_LONG_DOUBLE,
[AC_CACHE_CHECK(for long double, ac_cv_c_long_double,
[if test "$GCC" = yes; then
ac_cv_c_long_double=yes
else
AC_TRY_RUN([
int
main()
{
/* The Stardent Vistra knows sizeof(long double), but does not
support it. */
long double foo = 0.0;
/* On Ultrix 4.3 cc, long double is 4 and double is 8. */
/* On IRIX 5.3, the compiler converts long double to double with a warning,
but compiles this successfully. */
exit(sizeof(long double) <= sizeof(double));
}
], ac_cv_c_long_double=yes, ac_cv_c_long_double=no)
fi])
if test $ac_cv_c_long_double = yes; then
AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if the `long double' type works.])
fi
])
dnl
dnl Check for <inttypes.h>. This is separated out so that it can be
dnl AC_REQUIREd.
dnl
dnl BASH_HEADER_INTTYPES
AC_DEFUN(BASH_HEADER_INTTYPES,
[
AC_CHECK_HEADERS(inttypes.h)
])
dnl
dnl check for typedef'd symbols in header files, but allow the caller to
dnl specify the include files to be checked in addition to the default
dnl
dnl BASH_CHECK_TYPE(TYPE, HEADERS, DEFAULT[, VALUE-IF-FOUND])
AC_DEFUN(BASH_CHECK_TYPE,
[
AC_REQUIRE([AC_HEADER_STDC])dnl
AC_REQUIRE([BASH_HEADER_INTTYPES])
AC_MSG_CHECKING(for $1)
AC_CACHE_VAL(bash_cv_type_$1,
[AC_EGREP_CPP($1, [#include <sys/types.h>
#if STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#endif
#if HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#if HAVE_STDINT_H
#include <stdint.h>
#endif
$2
], bash_cv_type_$1=yes, bash_cv_type_$1=no)])
AC_MSG_RESULT($bash_cv_type_$1)
ifelse($#, 4, [if test $bash_cv_type_$1 = yes; then
AC_DEFINE($4)
fi])
if test $bash_cv_type_$1 = no; then
AC_DEFINE_UNQUOTED($1, $3)
fi
])
dnl
dnl BASH_CHECK_DECL(FUNC)
dnl
dnl Check for a declaration of FUNC in stdlib.h and inttypes.h like
dnl AC_CHECK_DECL
dnl
AC_DEFUN(BASH_CHECK_DECL,
[
AC_REQUIRE([AC_HEADER_STDC])
AC_REQUIRE([BASH_HEADER_INTTYPES])
AC_CACHE_CHECK([for declaration of $1], bash_cv_decl_$1,
[AC_TRY_LINK(
[
#if STDC_HEADERS
# include <stdlib.h>
#endif
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
],
[return !$1;],
bash_cv_decl_$1=yes, bash_cv_decl_$1=no)])
bash_tr_func=HAVE_DECL_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
if test $bash_cv_decl_$1 = yes; then
AC_DEFINE_UNQUOTED($bash_tr_func, 1)
else
AC_DEFINE_UNQUOTED($bash_tr_func, 0)
fi
])
AC_DEFUN(BASH_DECL_PRINTF,
[AC_MSG_CHECKING(for declaration of printf in <stdio.h>)
AC_CACHE_VAL(bash_cv_printf_declared,
[AC_TRY_RUN([
#include <stdio.h>
#ifdef __STDC__
typedef int (*_bashfunc)(const char *, ...);
#else
typedef int (*_bashfunc)();
#endif
main()
{
_bashfunc pf;
pf = (_bashfunc) printf;
exit(pf == 0);
}
], bash_cv_printf_declared=yes, bash_cv_printf_declared=no,
[AC_MSG_WARN(cannot check printf declaration if cross compiling -- defaulting to yes)
bash_cv_printf_declared=yes]
)])
AC_MSG_RESULT($bash_cv_printf_declared)
if test $bash_cv_printf_declared = yes; then
AC_DEFINE(PRINTF_DECLARED)
fi
])
AC_DEFUN(BASH_DECL_SBRK,
[AC_MSG_CHECKING(for declaration of sbrk in <unistd.h>)
AC_CACHE_VAL(bash_cv_sbrk_declared,
[AC_EGREP_HEADER(sbrk, unistd.h,
bash_cv_sbrk_declared=yes, bash_cv_sbrk_declared=no)])
AC_MSG_RESULT($bash_cv_sbrk_declared)
if test $bash_cv_sbrk_declared = yes; then
AC_DEFINE(SBRK_DECLARED)
fi
])
dnl
dnl Check for sys_siglist[] or _sys_siglist[]
dnl
AC_DEFUN(BASH_DECL_UNDER_SYS_SIGLIST,
[AC_MSG_CHECKING([for _sys_siglist in signal.h or unistd.h])
AC_CACHE_VAL(bash_cv_decl_under_sys_siglist,
[AC_TRY_COMPILE([
#include <sys/types.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif], [ char *msg = _sys_siglist[2]; ],
bash_cv_decl_under_sys_siglist=yes, bash_cv_decl_under_sys_siglist=no,
[AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)])])dnl
AC_MSG_RESULT($bash_cv_decl_under_sys_siglist)
if test $bash_cv_decl_under_sys_siglist = yes; then
AC_DEFINE(UNDER_SYS_SIGLIST_DECLARED)
fi
])
AC_DEFUN(BASH_UNDER_SYS_SIGLIST,
[AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST])
AC_MSG_CHECKING([for _sys_siglist in system C library])
AC_CACHE_VAL(bash_cv_under_sys_siglist,
[AC_TRY_RUN([
#include <sys/types.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef UNDER_SYS_SIGLIST_DECLARED
extern char *_sys_siglist[];
#endif
main()
{
char *msg = (char *)_sys_siglist[2];
exit(msg == 0);
}],
bash_cv_under_sys_siglist=yes, bash_cv_under_sys_siglist=no,
[AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)
bash_cv_under_sys_siglist=no])])
AC_MSG_RESULT($bash_cv_under_sys_siglist)
if test $bash_cv_under_sys_siglist = yes; then
AC_DEFINE(HAVE_UNDER_SYS_SIGLIST)
fi
])
AC_DEFUN(BASH_SYS_SIGLIST,
[AC_REQUIRE([AC_DECL_SYS_SIGLIST])
AC_MSG_CHECKING([for sys_siglist in system C library])
AC_CACHE_VAL(bash_cv_sys_siglist,
[AC_TRY_RUN([
#include <sys/types.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if !HAVE_DECL_SYS_SIGLIST
extern char *sys_siglist[];
#endif
main()
{
char *msg = sys_siglist[2];
exit(msg == 0);
}],
bash_cv_sys_siglist=yes, bash_cv_sys_siglist=no,
[AC_MSG_WARN(cannot check for sys_siglist if cross compiling -- defaulting to no)
bash_cv_sys_siglist=no])])
AC_MSG_RESULT($bash_cv_sys_siglist)
if test $bash_cv_sys_siglist = yes; then
AC_DEFINE(HAVE_SYS_SIGLIST)
fi
])
dnl Check for the various permutations of sys_siglist and make sure we
dnl compile in siglist.o if they're not defined
AC_DEFUN(BASH_CHECK_SYS_SIGLIST, [
AC_REQUIRE([BASH_SYS_SIGLIST])
AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST])
AC_REQUIRE([BASH_FUNC_STRSIGNAL])
if test "$bash_cv_sys_siglist" = no && test "$bash_cv_under_sys_siglist" = no && test "$bash_cv_have_strsignal" = no; then
SIGLIST_O=siglist.o
else
SIGLIST_O=
fi
AC_SUBST([SIGLIST_O])
])
dnl Check for sys_errlist[] and sys_nerr, check for declaration
AC_DEFUN(BASH_SYS_ERRLIST,
[AC_MSG_CHECKING([for sys_errlist and sys_nerr])
AC_CACHE_VAL(bash_cv_sys_errlist,
[AC_TRY_LINK([#include <errno.h>],
[extern char *sys_errlist[];
extern int sys_nerr;
char *msg = sys_errlist[sys_nerr - 1];],
bash_cv_sys_errlist=yes, bash_cv_sys_errlist=no)])dnl
AC_MSG_RESULT($bash_cv_sys_errlist)
if test $bash_cv_sys_errlist = yes; then
AC_DEFINE(HAVE_SYS_ERRLIST)
fi
])
dnl
dnl Check if dup2() does not clear the close on exec flag
dnl
AC_DEFUN(BASH_FUNC_DUP2_CLOEXEC_CHECK,
[AC_MSG_CHECKING(if dup2 fails to clear the close-on-exec flag)
AC_CACHE_VAL(bash_cv_dup2_broken,
[AC_TRY_RUN([
#include <sys/types.h>
#include <fcntl.h>
main()
{
int fd1, fd2, fl;
fd1 = open("/dev/null", 2);
if (fcntl(fd1, 2, 1) < 0)
exit(1);
fd2 = dup2(fd1, 1);
if (fd2 < 0)
exit(2);
fl = fcntl(fd2, 1, 0);
/* fl will be 1 if dup2 did not reset the close-on-exec flag. */
exit(fl != 1);
}
], bash_cv_dup2_broken=yes, bash_cv_dup2_broken=no,
[AC_MSG_WARN(cannot check dup2 if cross compiling -- defaulting to no)
bash_cv_dup2_broken=no])
])
AC_MSG_RESULT($bash_cv_dup2_broken)
if test $bash_cv_dup2_broken = yes; then
AC_DEFINE(DUP2_BROKEN)
fi
])
AC_DEFUN(BASH_FUNC_STRSIGNAL,
[AC_MSG_CHECKING([for the existence of strsignal])
AC_CACHE_VAL(bash_cv_have_strsignal,
[AC_TRY_LINK([#include <sys/types.h>
#include <signal.h>],
[char *s = (char *)strsignal(2);],
bash_cv_have_strsignal=yes, bash_cv_have_strsignal=no)])
AC_MSG_RESULT($bash_cv_have_strsignal)
if test $bash_cv_have_strsignal = yes; then
AC_DEFINE(HAVE_STRSIGNAL)
fi
])
dnl Check to see if opendir will open non-directories (not a nice thing)
AC_DEFUN(BASH_FUNC_OPENDIR_CHECK,
[AC_REQUIRE([AC_HEADER_DIRENT])dnl
AC_MSG_CHECKING(if opendir() opens non-directories)
AC_CACHE_VAL(bash_cv_opendir_not_robust,
[AC_TRY_RUN([
#include <stdio.h>
#include <sys/types.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#if defined(HAVE_DIRENT_H)
# include <dirent.h>
#else
# define dirent direct
# ifdef HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif /* SYSNDIR */
# ifdef HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif /* SYSDIR */
# ifdef HAVE_NDIR_H
# include <ndir.h>
# endif
#endif /* HAVE_DIRENT_H */
main()
{
DIR *dir;
int fd, err;
err = mkdir("bash-aclocal", 0700);
if (err < 0) {
perror("mkdir");
exit(1);
}
unlink("bash-aclocal/not_a_directory");
fd = open("bash-aclocal/not_a_directory", O_WRONLY|O_CREAT|O_EXCL, 0666);
write(fd, "\n", 1);
close(fd);
dir = opendir("bash-aclocal/not_a_directory");
unlink("bash-aclocal/not_a_directory");
rmdir("bash-aclocal");
exit (dir == 0);
}], bash_cv_opendir_not_robust=yes,bash_cv_opendir_not_robust=no,
[AC_MSG_WARN(cannot check opendir if cross compiling -- defaulting to no)
bash_cv_opendir_not_robust=no]
)])
AC_MSG_RESULT($bash_cv_opendir_not_robust)
if test $bash_cv_opendir_not_robust = yes; then
AC_DEFINE(OPENDIR_NOT_ROBUST)
fi
])
dnl
AC_DEFUN(BASH_TYPE_SIGHANDLER,
[AC_MSG_CHECKING([whether signal handlers are of type void])
AC_CACHE_VAL(bash_cv_void_sighandler,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <signal.h>
#ifdef signal
#undef signal
#endif
#ifdef __cplusplus
extern "C"
#endif
void (*signal ()) ();],
[int i;], bash_cv_void_sighandler=yes, bash_cv_void_sighandler=no)])dnl
AC_MSG_RESULT($bash_cv_void_sighandler)
if test $bash_cv_void_sighandler = yes; then
AC_DEFINE(VOID_SIGHANDLER)
fi
])
dnl
dnl A signed 16-bit integer quantity
dnl
AC_DEFUN(BASH_TYPE_BITS16_T,
[
if test "$ac_cv_sizeof_short" = 2; then
AC_CHECK_TYPE(bits16_t, short)
elif test "$ac_cv_sizeof_char" = 2; then
AC_CHECK_TYPE(bits16_t, char)
else
AC_CHECK_TYPE(bits16_t, short)
fi
])
dnl
dnl An unsigned 16-bit integer quantity
dnl
AC_DEFUN(BASH_TYPE_U_BITS16_T,
[
if test "$ac_cv_sizeof_short" = 2; then
AC_CHECK_TYPE(u_bits16_t, unsigned short)
elif test "$ac_cv_sizeof_char" = 2; then
AC_CHECK_TYPE(u_bits16_t, unsigned char)
else
AC_CHECK_TYPE(u_bits16_t, unsigned short)
fi
])
dnl
dnl A signed 32-bit integer quantity
dnl
AC_DEFUN(BASH_TYPE_BITS32_T,
[
if test "$ac_cv_sizeof_int" = 4; then
AC_CHECK_TYPE(bits32_t, int)
elif test "$ac_cv_sizeof_long" = 4; then
AC_CHECK_TYPE(bits32_t, long)
else
AC_CHECK_TYPE(bits32_t, int)
fi
])
dnl
dnl An unsigned 32-bit integer quantity
dnl
AC_DEFUN(BASH_TYPE_U_BITS32_T,
[
if test "$ac_cv_sizeof_int" = 4; then
AC_CHECK_TYPE(u_bits32_t, unsigned int)
elif test "$ac_cv_sizeof_long" = 4; then
AC_CHECK_TYPE(u_bits32_t, unsigned long)
else
AC_CHECK_TYPE(u_bits32_t, unsigned int)
fi
])
AC_DEFUN(BASH_TYPE_PTRDIFF_T,
[
if test "$ac_cv_sizeof_int" = "$ac_cv_sizeof_char_p"; then
AC_CHECK_TYPE(ptrdiff_t, int)
elif test "$ac_cv_sizeof_long" = "$ac_cv_sizeof_char_p"; then
AC_CHECK_TYPE(ptrdiff_t, long)
elif test "$ac_cv_type_long_long" = yes && test "$ac_cv_sizeof_long_long" = "$ac_cv_sizeof_char_p"; then
AC_CHECK_TYPE(ptrdiff_t, [long long])
else
AC_CHECK_TYPE(ptrdiff_t, int)
fi
])
dnl
dnl A signed 64-bit quantity
dnl
AC_DEFUN(BASH_TYPE_BITS64_T,
[
if test "$ac_cv_sizeof_char_p" = 8; then
AC_CHECK_TYPE(bits64_t, char *)
elif test "$ac_cv_sizeof_double" = 8; then
AC_CHECK_TYPE(bits64_t, double)
elif test -n "$ac_cv_type_long_long" && test "$ac_cv_sizeof_long_long" = 8; then
AC_CHECK_TYPE(bits64_t, [long long])
elif test "$ac_cv_sizeof_long" = 8; then
AC_CHECK_TYPE(bits64_t, long)
else
AC_CHECK_TYPE(bits64_t, double)
fi
])
AC_DEFUN(BASH_TYPE_LONG_LONG,
[
AC_CACHE_CHECK([for long long], bash_cv_type_long_long,
[AC_TRY_LINK([
long long ll = 1; int i = 63;],
[
long long llm = (long long) -1;
return ll << i | ll >> i | llm / ll | llm % ll;
], bash_cv_type_long_long='long long', bash_cv_type_long_long='long')])
if test "$bash_cv_type_long_long" = 'long long'; then
AC_DEFINE(HAVE_LONG_LONG, 1)
fi
])
AC_DEFUN(BASH_TYPE_UNSIGNED_LONG_LONG,
[
AC_CACHE_CHECK([for unsigned long long], bash_cv_type_unsigned_long_long,
[AC_TRY_LINK([
unsigned long long ull = 1; int i = 63;],
[
unsigned long long ullmax = (unsigned long long) -1;
return ull << i | ull >> i | ullmax / ull | ullmax % ull;
], bash_cv_type_unsigned_long_long='unsigned long long',
bash_cv_type_unsigned_long_long='unsigned long')])
if test "$bash_cv_type_unsigned_long_long" = 'unsigned long long'; then
AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1)
fi
])
dnl
dnl Type of struct rlimit fields: some systems (OSF/1, NetBSD, RISC/os 5.0)
dnl have a rlim_t, others (4.4BSD based systems) use quad_t, others use
dnl long and still others use int (HP-UX 9.01, SunOS 4.1.3). To simplify
dnl matters, this just checks for rlim_t, quad_t, or long.
dnl
AC_DEFUN(BASH_TYPE_RLIMIT,
[AC_MSG_CHECKING(for size and type of struct rlimit fields)
AC_CACHE_VAL(bash_cv_type_rlimit,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/resource.h>],
[rlim_t xxx;], bash_cv_type_rlimit=rlim_t,[
AC_TRY_RUN([
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
main()
{
#ifdef HAVE_QUAD_T
struct rlimit rl;
if (sizeof(rl.rlim_cur) == sizeof(quad_t))
exit(0);
#endif
exit(1);
}], bash_cv_type_rlimit=quad_t, bash_cv_type_rlimit=long,
[AC_MSG_WARN(cannot check quad_t if cross compiling -- defaulting to long)
bash_cv_type_rlimit=long])])
])
AC_MSG_RESULT($bash_cv_type_rlimit)
if test $bash_cv_type_rlimit = quad_t; then
AC_DEFINE(RLIMTYPE, quad_t)
elif test $bash_cv_type_rlimit = rlim_t; then
AC_DEFINE(RLIMTYPE, rlim_t)
fi
])
AC_DEFUN(BASH_TYPE_SIG_ATOMIC_T,
[AC_CACHE_CHECK([for sig_atomic_t in signal.h], ac_cv_have_sig_atomic_t,
[AC_TRY_LINK([
#include <signal.h>
],[ sig_atomic_t x; ],
ac_cv_have_sig_atomic_t=yes, ac_cv_have_sig_atomic_t=no)])
if test "$ac_cv_have_sig_atomic_t" = "no"
then
AC_CHECK_TYPE(sig_atomic_t,int)
fi
])
AC_DEFUN(BASH_FUNC_LSTAT,
[dnl Cannot use AC_CHECK_FUNCS(lstat) because Linux defines lstat() as an
dnl inline function in <sys/stat.h>.
AC_CACHE_CHECK([for lstat], bash_cv_func_lstat,
[AC_TRY_LINK([
#include <sys/types.h>
#include <sys/stat.h>
],[ lstat(".",(struct stat *)0); ],
bash_cv_func_lstat=yes, bash_cv_func_lstat=no)])
if test $bash_cv_func_lstat = yes; then
AC_DEFINE(HAVE_LSTAT)
fi
])
AC_DEFUN(BASH_FUNC_INET_ATON,
[
AC_CACHE_CHECK([for inet_aton], bash_cv_func_inet_aton,
[AC_TRY_LINK([
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
struct in_addr ap;], [ inet_aton("127.0.0.1", &ap); ],
bash_cv_func_inet_aton=yes, bash_cv_func_inet_aton=no)])
if test $bash_cv_func_inet_aton = yes; then
AC_DEFINE(HAVE_INET_ATON)
else
AC_LIBOBJ(inet_aton)
fi
])
AC_DEFUN(BASH_FUNC_GETENV,
[AC_MSG_CHECKING(to see if getenv can be redefined)
AC_CACHE_VAL(bash_cv_getenv_redef,
[AC_TRY_RUN([
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifndef __STDC__
# ifndef const
# define const
# endif
#endif
char *
getenv (name)
#if defined (__linux__) || defined (__bsdi__) || defined (convex)
const char *name;
#else
char const *name;
#endif /* !__linux__ && !__bsdi__ && !convex */
{
return "42";
}
main()
{
char *s;
/* The next allows this program to run, but does not allow bash to link
when it redefines getenv. I'm not really interested in figuring out
why not. */
#if defined (NeXT)
exit(1);
#endif
s = getenv("ABCDE");
exit(s == 0); /* force optimizer to leave getenv in */
}
], bash_cv_getenv_redef=yes, bash_cv_getenv_redef=no,
[AC_MSG_WARN(cannot check getenv redefinition if cross compiling -- defaulting to yes)
bash_cv_getenv_redef=yes]
)])
AC_MSG_RESULT($bash_cv_getenv_redef)
if test $bash_cv_getenv_redef = yes; then
AC_DEFINE(CAN_REDEFINE_GETENV)
fi
])
# We should check for putenv before calling this
AC_DEFUN(BASH_FUNC_STD_PUTENV,
[
AC_REQUIRE([AC_HEADER_STDC])
AC_REQUIRE([AC_C_PROTOTYPES])
AC_CACHE_CHECK([for standard-conformant putenv declaration], bash_cv_std_putenv,
[AC_TRY_LINK([
#if STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#endif
#ifndef __STDC__
# ifndef const
# define const
# endif
#endif
#ifdef PROTOTYPES
extern int putenv (char *);
#else
extern int putenv ();
#endif
],
[return (putenv == 0);],
bash_cv_std_putenv=yes, bash_cv_std_putenv=no
)])
if test $bash_cv_std_putenv = yes; then
AC_DEFINE(HAVE_STD_PUTENV)
fi
])
# We should check for unsetenv before calling this
AC_DEFUN(BASH_FUNC_STD_UNSETENV,
[
AC_REQUIRE([AC_HEADER_STDC])
AC_REQUIRE([AC_C_PROTOTYPES])
AC_CACHE_CHECK([for standard-conformant unsetenv declaration], bash_cv_std_unsetenv,
[AC_TRY_LINK([
#if STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#endif
#ifndef __STDC__
# ifndef const
# define const
# endif
#endif
#ifdef PROTOTYPES
extern int unsetenv (const char *);
#else
extern int unsetenv ();
#endif
],
[return (unsetenv == 0);],
bash_cv_std_unsetenv=yes, bash_cv_std_unsetenv=no
)])
if test $bash_cv_std_unsetenv = yes; then
AC_DEFINE(HAVE_STD_UNSETENV)
fi
])
AC_DEFUN(BASH_FUNC_ULIMIT_MAXFDS,
[AC_MSG_CHECKING(whether ulimit can substitute for getdtablesize)
AC_CACHE_VAL(bash_cv_ulimit_maxfds,
[AC_TRY_RUN([
main()
{
long maxfds = ulimit(4, 0L);
exit (maxfds == -1L);
}
], bash_cv_ulimit_maxfds=yes, bash_cv_ulimit_maxfds=no,
[AC_MSG_WARN(cannot check ulimit if cross compiling -- defaulting to no)
bash_cv_ulimit_maxfds=no]
)])
AC_MSG_RESULT($bash_cv_ulimit_maxfds)
if test $bash_cv_ulimit_maxfds = yes; then
AC_DEFINE(ULIMIT_MAXFDS)
fi
])
AC_DEFUN(BASH_FUNC_GETCWD,
[AC_MSG_CHECKING([if getcwd() will dynamically allocate memory with 0 size])
AC_CACHE_VAL(bash_cv_getcwd_malloc,
[AC_TRY_RUN([
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
main()
{
char *xpwd;
xpwd = getcwd(0, 0);
exit (xpwd == 0);
}
], bash_cv_getcwd_malloc=yes, bash_cv_getcwd_malloc=no,
[AC_MSG_WARN(cannot check whether getcwd allocates memory when cross-compiling -- defaulting to no)
bash_cv_getcwd_malloc=no]
)])
AC_MSG_RESULT($bash_cv_getcwd_malloc)
if test $bash_cv_getcwd_malloc = no; then
AC_DEFINE(GETCWD_BROKEN)
AC_LIBOBJ(getcwd)
fi
])
dnl
dnl This needs BASH_CHECK_SOCKLIB, but since that's not called on every
dnl system, we can't use AC_PREREQ
dnl
AC_DEFUN(BASH_FUNC_GETHOSTBYNAME,
[if test "X$bash_cv_have_gethostbyname" = "X"; then
_bash_needmsg=yes
else
AC_MSG_CHECKING(for gethostbyname in socket library)
_bash_needmsg=
fi
AC_CACHE_VAL(bash_cv_have_gethostbyname,
[AC_TRY_LINK([#include <netdb.h>],
[ struct hostent *hp;
hp = gethostbyname("localhost");
], bash_cv_have_gethostbyname=yes, bash_cv_have_gethostbyname=no)]
)
if test "X$_bash_needmsg" = Xyes; then
AC_MSG_CHECKING(for gethostbyname in socket library)
fi
AC_MSG_RESULT($bash_cv_have_gethostbyname)
if test "$bash_cv_have_gethostbyname" = yes; then
AC_DEFINE(HAVE_GETHOSTBYNAME)
fi
])
AC_DEFUN(BASH_FUNC_FNMATCH_EXTMATCH,
[AC_MSG_CHECKING(if fnmatch does extended pattern matching with FNM_EXTMATCH)
AC_CACHE_VAL(bash_cv_fnm_extmatch,
[AC_TRY_RUN([
#include <fnmatch.h>
main()
{
#ifdef FNM_EXTMATCH
exit (0);
#else
exit (1);
#endif
}
], bash_cv_fnm_extmatch=yes, bash_cv_fnm_extmatch=no,
[AC_MSG_WARN(cannot check FNM_EXTMATCH if cross compiling -- defaulting to no)
bash_cv_fnm_extmatch=no])
])
AC_MSG_RESULT($bash_cv_fnm_extmatch)
if test $bash_cv_fnm_extmatch = yes; then
AC_DEFINE(HAVE_LIBC_FNM_EXTMATCH)
fi
])
AC_DEFUN(BASH_FUNC_POSIX_SETJMP,
[AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE])
AC_MSG_CHECKING(for presence of POSIX-style sigsetjmp/siglongjmp)
AC_CACHE_VAL(bash_cv_func_sigsetjmp,
[AC_TRY_RUN([
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#include <signal.h>
#include <setjmp.h>
main()
{
#if !defined (_POSIX_VERSION) || !defined (HAVE_POSIX_SIGNALS)
exit (1);
#else
int code;
sigset_t set, oset;
sigjmp_buf xx;
/* get the mask */
sigemptyset(&set);
sigemptyset(&oset);
sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &set);
sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &oset);
/* save it */
code = sigsetjmp(xx, 1);
if (code)
exit(0); /* could get sigmask and compare to oset here. */
/* change it */
sigaddset(&set, SIGINT);
sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);
/* and siglongjmp */
siglongjmp(xx, 10);
exit(1);
#endif
}], bash_cv_func_sigsetjmp=present, bash_cv_func_sigsetjmp=missing,
[AC_MSG_WARN(cannot check for sigsetjmp/siglongjmp if cross-compiling -- defaulting to missing)
bash_cv_func_sigsetjmp=missing]
)])
AC_MSG_RESULT($bash_cv_func_sigsetjmp)
if test $bash_cv_func_sigsetjmp = present; then
AC_DEFINE(HAVE_POSIX_SIGSETJMP)
fi
])
AC_DEFUN(BASH_FUNC_STRCOLL,
[
AC_MSG_CHECKING(whether or not strcoll and strcmp differ)
AC_CACHE_VAL(bash_cv_func_strcoll_broken,
[AC_TRY_RUN([
#include <stdio.h>
#if defined (HAVE_LOCALE_H)
#include <locale.h>
#endif
main(c, v)
int c;
char *v[];
{
int r1, r2;
char *deflocale, *defcoll;
#ifdef HAVE_SETLOCALE
deflocale = setlocale(LC_ALL, "");
defcoll = setlocale(LC_COLLATE, "");
#endif
#ifdef HAVE_STRCOLL
/* These two values are taken from tests/glob-test. */
r1 = strcoll("abd", "aXd");
#else
r1 = 0;
#endif
r2 = strcmp("abd", "aXd");
/* These two should both be greater than 0. It is permissible for
a system to return different values, as long as the sign is the
same. */
/* Exit with 1 (failure) if these two values are both > 0, since
this tests whether strcoll(3) is broken with respect to strcmp(3)
in the default locale. */
exit (r1 > 0 && r2 > 0);
}
], bash_cv_func_strcoll_broken=yes, bash_cv_func_strcoll_broken=no,
[AC_MSG_WARN(cannot check strcoll if cross compiling -- defaulting to no)
bash_cv_func_strcoll_broken=no]
)])
AC_MSG_RESULT($bash_cv_func_strcoll_broken)
if test $bash_cv_func_strcoll_broken = yes; then
AC_DEFINE(STRCOLL_BROKEN)
fi
])
AC_DEFUN(BASH_FUNC_PRINTF_A_FORMAT,
[AC_MSG_CHECKING([for printf floating point output in hex notation])
AC_CACHE_VAL(bash_cv_printf_a_format,
[AC_TRY_RUN([
#include <stdio.h>
#include <string.h>
int
main()
{
double y = 0.0;
char abuf[1024];
sprintf(abuf, "%A", y);
exit(strchr(abuf, 'P') == (char *)0);
}
], bash_cv_printf_a_format=yes, bash_cv_printf_a_format=no,
[AC_MSG_WARN(cannot check printf if cross compiling -- defaulting to no)
bash_cv_printf_a_format=no]
)])
AC_MSG_RESULT($bash_cv_printf_a_format)
if test $bash_cv_printf_a_format = yes; then
AC_DEFINE(HAVE_PRINTF_A_FORMAT)
fi
])
AC_DEFUN(BASH_STRUCT_TERMIOS_LDISC,
[
AC_CHECK_MEMBER(struct termios.c_line, AC_DEFINE(TERMIOS_LDISC), ,[
#include <sys/types.h>
#include <termios.h>
])
])
AC_DEFUN(BASH_STRUCT_TERMIO_LDISC,
[
AC_CHECK_MEMBER(struct termio.c_line, AC_DEFINE(TERMIO_LDISC), ,[
#include <sys/types.h>
#include <termio.h>
])
])
dnl
dnl Like AC_STRUCT_ST_BLOCKS, but doesn't muck with LIBOBJS
dnl
dnl sets bash_cv_struct_stat_st_blocks
dnl
dnl unused for now; we'll see how AC_CHECK_MEMBERS works
dnl
AC_DEFUN(BASH_STRUCT_ST_BLOCKS,
[
AC_MSG_CHECKING([for struct stat.st_blocks])
AC_CACHE_VAL(bash_cv_struct_stat_st_blocks,
[AC_TRY_COMPILE(
[
#include <sys/types.h>
#include <sys/stat.h>
],
[
main()
{
static struct stat a;
if (a.st_blocks) return 0;
return 0;
}
], bash_cv_struct_stat_st_blocks=yes, bash_cv_struct_stat_st_blocks=no)
])
AC_MSG_RESULT($bash_cv_struct_stat_st_blocks)
if test "$bash_cv_struct_stat_st_blocks" = "yes"; then
AC_DEFINE(HAVE_STRUCT_STAT_ST_BLOCKS)
fi
])
AC_DEFUN([BASH_CHECK_LIB_TERMCAP],
[
if test "X$bash_cv_termcap_lib" = "X"; then
_bash_needmsg=yes
else
AC_MSG_CHECKING(which library has the termcap functions)
_bash_needmsg=
fi
AC_CACHE_VAL(bash_cv_termcap_lib,
[AC_CHECK_FUNC(tgetent, bash_cv_termcap_lib=libc,
[AC_CHECK_LIB(termcap, tgetent, bash_cv_termcap_lib=libtermcap,
[AC_CHECK_LIB(tinfo, tgetent, bash_cv_termcap_lib=libtinfo,
[AC_CHECK_LIB(curses, tgetent, bash_cv_termcap_lib=libcurses,
[AC_CHECK_LIB(ncurses, tgetent, bash_cv_termcap_lib=libncurses,
[AC_CHECK_LIB(ncursesw, tgetent, bash_cv_termcap_lib=libncursesw,
bash_cv_termcap_lib=gnutermcap)])])])])])])
if test "X$_bash_needmsg" = "Xyes"; then
AC_MSG_CHECKING(which library has the termcap functions)
fi
AC_MSG_RESULT(using $bash_cv_termcap_lib)
if test $bash_cv_termcap_lib = gnutermcap && test -z "$prefer_curses"; then
LDFLAGS="$LDFLAGS -L./lib/termcap"
TERMCAP_LIB="./lib/termcap/libtermcap.a"
TERMCAP_DEP="./lib/termcap/libtermcap.a"
elif test $bash_cv_termcap_lib = libtermcap && test -z "$prefer_curses"; then
TERMCAP_LIB=-ltermcap
TERMCAP_DEP=
elif test $bash_cv_termcap_lib = libtinfo; then
TERMCAP_LIB=-ltinfo
TERMCAP_DEP=
elif test $bash_cv_termcap_lib = libncurses; then
TERMCAP_LIB=-lncurses
TERMCAP_DEP=
elif test $bash_cv_termcap_lib = libc; then
TERMCAP_LIB=
TERMCAP_DEP=
else
TERMCAP_LIB=-lcurses
TERMCAP_DEP=
fi
])
dnl
dnl Check for the presence of getpeername in libsocket.
dnl If libsocket is present, check for libnsl and add it to LIBS if
dnl it's there, since most systems with libsocket require linking
dnl with libnsl as well. This should only be called if getpeername
dnl was not found in libc.
dnl
dnl NOTE: IF WE FIND GETPEERNAME, WE ASSUME THAT WE HAVE BIND/CONNECT