configure.ac

dnl Process this file with autoconf to produce a configure script.
AC_PREREQ([2.64])
AC_INIT
AC_CONFIG_SRCDIR([access.c])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])

dnl AC_CMDSTDOUT_CPP(variable, command, headers)
AC_DEFUN([AC_CMDSTDOUT_CPP],
[cat > conftest.$ac_ext <<EOF
[#]line __oline__ "configure"
#include "confdefs.h"
[$3]
EOF
$1=`(eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD | $2`
rm -f conftest*
])

AC_CANONICAL_HOST

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_MKDIR_P
AC_PROG_YACC

dnl ----------------------------
dnl CHECK FOR /dev/fd FILESYSTEM
dnl ----------------------------
AC_CACHE_CHECK(for /dev/fd filesystem, es_cv_sys_dev_fd,
[test -d /dev/fd && es_cv_sys_dev_fd=yes || es_cv_sys_dev_fd=no])
if test $es_cv_sys_dev_fd = yes; then
  AC_DEFINE(HAVE_DEV_FD, [1], [Do you have a /dev/fd/ directory?])
fi

AC_SYS_INTERPRETER
if test "$ac_cv_sys_interpreter" = yes
then
	AC_DEFINE(KERNEL_POUNDBANG, [1], [Does your kernel support #!?])
fi


dnl Checks for libraries.

AC_CHECK_LIB(sun, getpwuid)

ES_WITH_READLINE

dnl Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(fcntl.h limits.h sys/ioctl.h sys/time.h unistd.h memory.h stdarg.h sys/cdefs.h)


dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_UID_T
AC_TYPE_SIZE_T

dnl Checks for library functions.
AC_TYPE_GETGROUPS
AC_FUNC_MMAP

AC_CHECK_FUNCS(strerror strtol lstat setrlimit sigrelse sighold sigaction \
sysconf sigsetjmp getrusage)

AC_CACHE_CHECK(whether getenv can be redefined, es_cv_local_getenv,
[if test "$ac_cv_header_stdlib_h" = no || test "$ac_cv_header_stdc" = no; then
	es_cv_local_getenv=yes
fi
if test "$ac_cv_header_stdlib_h" = yes || test "$ac_cv_header_stdc" = yes; then
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdlib.h>
static char *sentinel = "a value";
static int   in_main  = 0;

char *getenv(const char *name) { return in_main ? sentinel : NULL; }

int main(int argc, char **argv) {
	char *v;
	in_main = 1;
	v = getenv("key");
	return (v == sentinel) ? 0 : 1;
}
]])],[es_cv_local_getenv=yes],[es_cv_local_getenv=no])
fi
])

if test "$es_cv_local_getenv" = yes
then
	AC_DEFINE(LOCAL_GETENV, [1], [Can getenv() be defined locally?])
fi

dnl Check to see if you can assign to a va_list
AC_CACHE_CHECK(whether assignment to va_list ok?, es_cv_assign_va_list,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#ifndef HAVE_STDARG_H
choke me
#else
#include <stdarg.h>
#endif]], [[va_list first, second; first = second; return 0;]])],[es_cv_assign_va_list=yes],[es_cv_assign_va_list=no]))
if test "$es_cv_assign_va_list" = no
then
	AC_DEFINE(NO_VA_LIST_ASSIGN, [1], [NO_VA_LIST_ASSIGN])
fi

dnl check for a u_quad_t or something like that
AC_CACHE_CHECK(for rlimit type ..., es_cv_rlimit_t,
AC_CMDSTDOUT_CPP(es_cv_rlimit_t, 
grep rlim_cur | sed -e 's/rlim_cur.*//' -e 's/^ //g' -e 's/^	//g' -e q,
[#ifdef HAVE_SETRLIMIT
# include <sys/resource.h>
#endif],long))

AC_CACHE_CHECK(for files to extract signal information from,
es_cv_sigfiles,
AC_CMDSTDOUT_CPP(es_cv_sigfiles,
[changequote(,)
grep -E '^#[ 	]+1[	 ]+' | sed 's/.*"\(.*\)".*/\1/' |sort -u |  
grep '^/' |tr '\012' ' ' 
changequote([,])],
[#include <signal.h>], /usr/include/signal.h))

AC_SUBST(SIGFILES, $es_cv_sigfiles)

AC_DEFINE_UNQUOTED(LIMIT_T, $es_cv_rlimit_t, [What type are your limits?])

AC_CONFIG_FILES([Makefile])
AC_OUTPUT