config.m4

dnl $Id$ -*- autoconf -*-

dnl
dnl Check if flush should be called explicitly after buffered io
dnl
AC_CACHE_CHECK([whether flush should be called explicitly after a buffered io], ac_cv_flush_io,[
AC_TRY_RUN( [
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv)
{
	char *filename = tmpnam(NULL);
	char buffer[64];
	int result = 0;
	
	FILE *fp = fopen(filename, "wb");
	if (NULL == fp)
		return 0;
	fputs("line 1\n", fp);
	fputs("line 2\n", fp);
	fclose(fp);
	
	fp = fopen(filename, "rb+");
	if (NULL == fp)
		return 0;
	fgets(buffer, sizeof(buffer), fp);
	fputs("line 3\n", fp);
	rewind(fp);
	fgets(buffer, sizeof(buffer), fp);
	if (0 != strcmp(buffer, "line 1\n"))
		result = 1;
	fgets(buffer, sizeof(buffer), fp);
	if (0 != strcmp(buffer, "line 3\n"))
		result = 1;
	fclose(fp);
	unlink(filename);

	exit(result);
}
],[
  ac_cv_flush_io=no
],[
  ac_cv_flush_io=yes
],[
  ac_cv_flush_io=no
])])
if test "$ac_cv_flush_io" = "yes"; then
  AC_DEFINE(HAVE_FLUSHIO, 1, [Define if flush should be called explicitly after a buffered io.])
fi

dnl
dnl Check for crypt() capabilities
dnl
if test "$ac_cv_func_crypt" = "no"; then
  AC_CHECK_LIB(crypt, crypt, [
    LIBS="-lcrypt $LIBS -lcrypt"
    AC_DEFINE(HAVE_CRYPT, 1, [ ])
  ])
fi
  
AC_CACHE_CHECK(for standard DES crypt, ac_cv_crypt_des,[
  AC_TRY_RUN([
#if HAVE_UNISTD_H
#include <unistd.h>
#endif

#if HAVE_CRYPT_H
#include <crypt.h>
#endif

main() {
#if HAVE_CRYPT
    exit (strcmp((char *)crypt("rasmuslerdorf","rl"),"rl.3StKT.4T8M"));
#else
	exit(0);
#endif
}],[
  ac_cv_crypt_des=yes
],[
  ac_cv_crypt_des=no
],[
  ac_cv_crypt_des=yes
])])

AC_CACHE_CHECK(for extended DES crypt, ac_cv_crypt_ext_des,[
  AC_TRY_RUN([
#if HAVE_UNISTD_H
#include <unistd.h>
#endif

#if HAVE_CRYPT_H
#include <crypt.h>
#endif

main() {
#if HAVE_CRYPT
  exit (strcmp((char *)crypt("rasmuslerdorf","_J9..rasm"),"_J9..rasmBYk8r9AiWNc"));
#else
  exit(0);
#endif
}],[
  ac_cv_crypt_ext_des=yes
],[
  ac_cv_crypt_ext_des=no
],[
  ac_cv_crypt_ext_des=no
])])

AC_CACHE_CHECK(for MD5 crypt, ac_cv_crypt_md5,[
AC_TRY_RUN([
#if HAVE_UNISTD_H
#include <unistd.h>
#endif

#if HAVE_CRYPT_H
#include <crypt.h>
#endif

main() {
#if HAVE_CRYPT
    char salt[15], answer[40];

    salt[0]='$'; salt[1]='1'; salt[2]='$'; 
    salt[3]='r'; salt[4]='a'; salt[5]='s';
    salt[6]='m'; salt[7]='u'; salt[8]='s';
    salt[9]='l'; salt[10]='e'; salt[11]='$';
    salt[12]='\0';
    strcpy(answer,salt);
    strcat(answer,"rISCgZzpwk3UhDidwXvin0");
    exit (strcmp((char *)crypt("rasmuslerdorf",salt),answer));
#else
	exit(0);
#endif
}],[
  ac_cv_crypt_md5=yes
],[
  ac_cv_crypt_md5=no
],[
  ac_cv_crypt_md5=no
])])

AC_CACHE_CHECK(for Blowfish crypt, ac_cv_crypt_blowfish,[
AC_TRY_RUN([
#if HAVE_UNISTD_H
#include <unistd.h>
#endif

#if HAVE_CRYPT_H
#include <crypt.h>
#endif

main() {
#if HAVE_CRYPT
    char salt[30], answer[70];
    
    salt[0]='$'; salt[1]='2'; salt[2]='a'; salt[3]='$'; salt[4]='0'; salt[5]='7'; salt[6]='$'; salt[7]='\0';
    strcat(salt,"rasmuslerd............");
    strcpy(answer,salt);
    strcpy(&answer[29],"nIdrcHdxcUxWomQX9j6kvERCFjTg7Ra");
    exit (strcmp((char *)crypt("rasmuslerdorf",salt),answer));
#else
	exit(0);
#endif
}],[
  ac_cv_crypt_blowfish=yes
],[
  ac_cv_crypt_blowfish=no
],[
  ac_cv_crypt_blowfish=no
])])

AC_CACHE_CHECK(for SHA512 crypt, ac_cv_crypt_SHA512,[
AC_TRY_RUN([
#if HAVE_UNISTD_H
#include <unistd.h>
#endif

#if HAVE_CRYPT_H
#include <crypt.h>
#endif

main() {
#if HAVE_CRYPT
    char salt[30], answer[80];
    
    salt[0]='$'; salt[1]='6'; salt[2]='$'; salt[3]='$'; salt[4]='b'; salt[5]='a'; salt[6]='r'; salt[7]='\0';
    strcpy(answer, salt);
    strcpy(&answer[29],"$6$$QMXjqd7rHQZPQ1yHsXkQqC1FBzDiVfTHXL.LaeDAeVV.IzMaV9VU4MQ8kPuZa2SOP1A0RPm772EaFYjpEJtdu.");
    exit (strcmp((char *)crypt("foo",salt),answer));
#else
	exit(0);
#endif
}],[
  ac_cv_crypt_SHA512=yes
],[
  ac_cv_crypt_SHA512=no
],[
  ac_cv_crypt_SHA512=no
])])

AC_CACHE_CHECK(for SHA256 crypt, ac_cv_crypt_SHA256,[
AC_TRY_RUN([
#if HAVE_UNISTD_H
#include <unistd.h>
#endif

#if HAVE_CRYPT_H
#include <crypt.h>
#endif

main() {
#if HAVE_CRYPT
    char salt[30], answer[80];
    salt[0]='$'; salt[1]='5'; salt[2]='$'; salt[3]='$'; salt[4]='s'; salt[5]='a'; salt[6]='l'; salt[7]='t';  salt[8]='s'; salt[9]='t'; salt[10]='r'; salt[11]='i'; salt[12]='n'; salt[13]='g'; salt[14]='\0';    
    strcat(salt,"");
    strcpy(answer, salt);
    strcpy(&answer[29], "$5$saltstring$5B8vYYiY.CVt1RlTTf8KbXBH3hsxY/GNooZaBBGWEc5");
    exit (strcmp((char *)crypt("foo",salt),answer));
#else
	exit(0);
#endif
}],[
  ac_cv_crypt_SHA256=yes
],[
  ac_cv_crypt_SHA256=no
],[
  ac_cv_crypt_SHA256=no
])])


dnl
dnl If one of them is missing, use our own implementation, portable code is then possible
dnl
if test "$ac_cv_crypt_blowfish" = "no" || test "$ac_cv_crypt_des" = "no" || test "$ac_cv_crypt_ext_des" = "no" || test "x$php_crypt_r" = "x0"; then

  dnl
  dnl Check for __alignof__ support in the compiler
  dnl
  AC_CACHE_CHECK(whether the compiler supports __alignof__, ac_cv_alignof_exists,[
  AC_TRY_COMPILE([
  ],[
    int align = __alignof__(int);
  ],[
    ac_cv_alignof_exists=yes
  ],[
    ac_cv_alignof_exists=no
  ])])
  if test "$ac_cv_alignof_exists" = "yes"; then
    AC_DEFINE([HAVE_ALIGNOF], 1, [whether the compiler supports __alignof__])
  fi

  dnl 
  dnl Check for __attribute__ ((__aligned__)) support in the compiler
  dnl
  AC_CACHE_CHECK(whether the compiler supports aligned attribute, ac_cv_attribute_aligned,[
  AC_TRY_COMPILE([
  ],[
    unsigned char test[32] __attribute__ ((__aligned__ (__alignof__ (int))));
  ],[
    ac_cv_attribute_aligned=yes
  ],[
    ac_cv_attribute_aligned=no
  ])])
  if test "$ac_cv_attribute_aligned" = "yes"; then
    AC_DEFINE([HAVE_ATTRIBUTE_ALIGNED], 1, [whether the compiler supports __attribute__ ((__aligned__))])
  fi
    

  AC_DEFINE_UNQUOTED(PHP_USE_PHP_CRYPT_R, 1, [Whether PHP has to use its own crypt_r for blowfish, des, ext des and md5])
  AC_DEFINE_UNQUOTED(PHP_STD_DES_CRYPT, 1, [Whether the system supports standard DES salt])
  AC_DEFINE_UNQUOTED(PHP_BLOWFISH_CRYPT, 1, [Whether the system supports BlowFish salt])
  AC_DEFINE_UNQUOTED(PHP_EXT_DES_CRYPT, 1, [Whether the system supports extended DES salt])
  AC_DEFINE_UNQUOTED(PHP_MD5_CRYPT, 1, [Whether the system supports MD5 salt])
  AC_DEFINE_UNQUOTED(PHP_SHA512_CRYPT, 1, [Whether the system supports SHA512 salt])
  AC_DEFINE_UNQUOTED(PHP_SHA256_CRYPT, 1, [Whether the system supports SHA256 salt])

  PHP_ADD_SOURCES(PHP_EXT_DIR(standard), crypt_freesec.c crypt_blowfish.c crypt_sha512.c crypt_sha256.c php_crypt_r.c)
else
  if test "$ac_cv_crypt_des" = "yes"; then
    ac_result=1
    ac_crypt_des=1
  else
    ac_result=0
    ac_crypt_des=0
  fi
  AC_DEFINE_UNQUOTED(PHP_STD_DES_CRYPT, $ac_result, [Whether the system supports standard DES salt])

  if test "$ac_cv_crypt_blowfish" = "yes"; then
    ac_result=1
    ac_crypt_blowfish=1
  else
    ac_result=0
    ac_crypt_blowfish=0
  fi
  AC_DEFINE_UNQUOTED(PHP_BLOWFISH_CRYPT, $ac_result, [Whether the system supports BlowFish salt])

  if test "$ac_cv_crypt_ext_des" = "yes"; then
    ac_result=1
    ac_crypt_edes=1
  else
    ac_result=0
    ac_crypt_edes=0
  fi
  AC_DEFINE_UNQUOTED(PHP_EXT_DES_CRYPT, $ac_result, [Whether the system supports extended DES salt])

  if test "$ac_cv_crypt_md5" = "yes"; then
    ac_result=1
    ac_crypt_md5=1
  else
    ac_result=0
    ac_crypt_md5=0
  fi
  AC_DEFINE_UNQUOTED(PHP_MD5_CRYPT, $ac_result, [Whether the system supports MD5 salt])  
  
  if test "$ac_cv_crypt_sha512" = "yes"; then
    ac_result=1
    ac_crypt_sha512=1
  else
    ac_result=0
    ac_crypt_sha512=0
  fi
  AC_DEFINE_UNQUOTED(PHP_SHA512_CRYPT, $ac_result, [Whether the system supports SHA512 salt])

  if test "$ac_cv_crypt_sha256" = "yes"; then
    ac_result=1
    ac_crypt_sha256=1
  else
    ac_result=0
    ac_crypt_sha256=0
  fi
  AC_DEFINE_UNQUOTED(PHP_SHA256_CRYPT, $ac_result, [Whether the system supports SHA256 salt])

  AC_DEFINE_UNQUOTED(PHP_USE_PHP_CRYPT_R, 0, [Whether PHP has to use its own crypt_r for blowfish, des and ext des])
fi

dnl
dnl Check for available functions
dnl
AC_CHECK_FUNCS(getcwd getwd asinh acosh atanh log1p hypot glob strfmon nice fpclass isinf isnan mempcpy strpncpy)
AC_FUNC_FNMATCH	

dnl
dnl Check if there is a support means of creating a new process
dnl and defining which handles it receives
dnl
AC_CHECK_FUNCS(fork CreateProcess, [
  php_can_support_proc_open=yes
  break
],[
  php_can_support_proc_open=no
])
AC_MSG_CHECKING([if your OS can spawn processes with inherited handles])
if test "$php_can_support_proc_open" = "yes"; then
  AC_MSG_RESULT(yes)
  AC_DEFINE(PHP_CAN_SUPPORT_PROC_OPEN,1, [Define if your system has fork/vfork/CreateProcess])
else
  AC_MSG_RESULT(no)
fi

PHP_ENABLE_CHROOT_FUNC=no
case "$PHP_SAPI" in
  embed)
    PHP_ENABLE_CHROOT_FUNC=yes
  ;;

  none)
    for PROG in $PHP_BINARIES; do
      case "$PROG" in
        cgi|cli)
          PHP_ENABLE_CHROOT_FUNC=yes
        ;;

        *)
          PHP_ENABLE_CHROOT_FUNC=no
          break
        ;;
      esac
   done
  ;;
esac

if test "$PHP_ENABLE_CHROOT_FUNC" = "yes"; then
  AC_DEFINE(ENABLE_CHROOT_FUNC, 1, [Whether to enable chroot() function])
fi

dnl
dnl Detect library functions needed by php dns_xxx functions
dnl ext/standard/php_dns.h will collect these in a single define: HAVE_FULL_DNS_FUNCS
dnl
PHP_CHECK_FUNC(res_nsearch, resolv, bind, socket)
PHP_CHECK_FUNC(dns_search, resolv, bind, socket)
PHP_CHECK_FUNC(dn_expand, resolv, bind, socket)
PHP_CHECK_FUNC(dn_skipname, resolv, bind, socket)

dnl
dnl These are old deprecated functions
dnl

PHP_CHECK_FUNC(res_search, resolv, bind, socket)

dnl
dnl Check if atof() accepts NAN
dnl
AC_CACHE_CHECK(whether atof() accepts NAN, ac_cv_atof_accept_nan,[
AC_TRY_RUN([
#include <math.h>
#include <stdlib.h>

#ifdef HAVE_ISNAN
#define zend_isnan(a) isnan(a)
#elif defined(HAVE_FPCLASS)
#define zend_isnan(a) ((fpclass(a) == FP_SNAN) || (fpclass(a) == FP_QNAN))
#else
#define zend_isnan(a) 0
#endif

int main(int argc, char** argv)
{
	return zend_isnan(atof("NAN")) ? 0 : 1;
}
],[
  ac_cv_atof_accept_nan=yes
],[
  ac_cv_atof_accept_nan=no
],[
  ac_cv_atof_accept_nan=no
])])
if test "$ac_cv_atof_accept_nan" = "yes"; then
  AC_DEFINE([HAVE_ATOF_ACCEPTS_NAN], 1, [whether atof() accepts NAN])
fi

dnl
dnl Check if atof() accepts INF
dnl
AC_CACHE_CHECK(whether atof() accepts INF, ac_cv_atof_accept_inf,[
AC_TRY_RUN([
#include <math.h>
#include <stdlib.h>

#ifdef HAVE_ISINF
#define zend_isinf(a) isinf(a)
#elif defined(INFINITY)
/* Might not work, but is required by ISO C99 */
#define zend_isinf(a) (((a)==INFINITY)?1:0)
#elif defined(HAVE_FPCLASS)
#define zend_isinf(a) ((fpclass(a) == FP_PINF) || (fpclass(a) == FP_NINF))
#else
#define zend_isinf(a) 0
#endif

int main(int argc, char** argv)
{
	return zend_isinf(atof("INF")) && zend_isinf(atof("-INF")) ? 0 : 1;
}
],[
  ac_cv_atof_accept_inf=yes
],[
  ac_cv_atof_accept_inf=no
],[
  ac_cv_atof_accept_inf=no
])])
if test "$ac_cv_atof_accept_inf" = "yes"; then
  AC_DEFINE([HAVE_ATOF_ACCEPTS_INF], 1, [whether atof() accepts INF])
fi

dnl
dnl Check if HUGE_VAL == INF
dnl
AC_CACHE_CHECK(whether HUGE_VAL == INF, ac_cv_huge_val_inf,[
AC_TRY_RUN([
#include <math.h>
#include <stdlib.h>

#ifdef HAVE_ISINF
#define zend_isinf(a) isinf(a)
#elif defined(INFINITY)
/* Might not work, but is required by ISO C99 */
#define zend_isinf(a) (((a)==INFINITY)?1:0)
#elif defined(HAVE_FPCLASS)
#define zend_isinf(a) ((fpclass(a) == FP_PINF) || (fpclass(a) == FP_NINF))
#else
#define zend_isinf(a) 0
#endif

int main(int argc, char** argv)
{
	return zend_isinf(HUGE_VAL) ? 0 : 1;
}
],[
  ac_cv_huge_val_inf=yes
],[
  ac_cv_huge_val_inf=no
],[
  ac_cv_huge_val_inf=yes
])])
dnl This is the most probable fallback so we assume yes in case of cross compile.
if test "$ac_cv_huge_val_inf" = "yes"; then
  AC_DEFINE([HAVE_HUGE_VAL_INF], 1, [whether HUGE_VAL == INF])
fi

dnl
dnl Check if HUGE_VAL + -HUGEVAL == NAN
dnl
AC_CACHE_CHECK(whether HUGE_VAL + -HUGEVAL == NAN, ac_cv_huge_val_nan,[
AC_TRY_RUN([
#include <math.h>
#include <stdlib.h>

#ifdef HAVE_ISNAN
#define zend_isnan(a) isnan(a)
#elif defined(HAVE_FPCLASS)
#define zend_isnan(a) ((fpclass(a) == FP_SNAN) || (fpclass(a) == FP_QNAN))
#else
#define zend_isnan(a) 0
#endif

int main(int argc, char** argv)
{
#if defined(__sparc__) && !(__GNUC__ >= 3)
	/* prevent bug #27830 */
	return 1;
#else
	return zend_isnan(HUGE_VAL + -HUGE_VAL) ? 0 : 1;
#endif
}
],[
  ac_cv_huge_val_nan=yes
],[
  ac_cv_huge_val_nan=no
],[
  ac_cv_huge_val_nan=yes
])])
dnl This is the most probable fallback so we assume yes in case of cross compile.
if test "$ac_cv_huge_val_nan" = "yes"; then
  AC_DEFINE([HAVE_HUGE_VAL_NAN], 1, [whether HUGE_VAL + -HUGEVAL == NAN])
fi

dnl
dnl Check for strptime()
dnl
AC_CACHE_CHECK(whether strptime() declaration fails, ac_cv_strptime_decl_fails,[
AC_TRY_COMPILE([
#include <time.h>
],[
#ifndef HAVE_STRPTIME
#error no strptime() on this platform
#else
/* use invalid strptime() declaration to see if it fails to compile */
int strptime(const char *s, const char *format, struct tm *tm);
#endif
],[
  ac_cv_strptime_decl_fails=no
],[
  ac_cv_strptime_decl_fails=yes
])])
if test "$ac_cv_strptime_decl_fails" = "yes"; then
  AC_DEFINE([HAVE_STRPTIME_DECL_FAILS], 1, [whether strptime() declaration fails])
fi

dnl
dnl Check for i18n capabilities
dnl
AC_CHECK_HEADERS([wchar.h])
AC_CHECK_FUNCS([mblen])
AC_CHECK_FUNCS([mbrlen mbsinit],,,[
#ifdef HAVE_WCHAR_H
# include <wchar.h>
#endif
])
AC_CACHE_CHECK([for mbstate_t], [ac_cv_type_mbstate_t],[
AC_TRY_COMPILE([
#ifdef HAVE_WCHAR_H
# include <wchar.h>
#endif
],[
int __tmp__() { mbstate_t a; }
],[
  ac_cv_type_mbstate_t=yes
],[
  ac_cv_type_mbstate_t=no
])])
if test "$ac_cv_type_mbstate_t" = "yes"; then
  AC_DEFINE([HAVE_MBSTATE_T], 1, [Define if your system has mbstate_t in wchar.h])
fi

dnl
dnl Check for atomic operation API availability in Solaris
dnl
AC_CHECK_HEADERS([atomic.h])

dnl
dnl Setup extension sources
dnl
PHP_NEW_EXTENSION(standard, array.c base64.c basic_functions.c browscap.c crc32.c crypt.c \
                            cyr_convert.c datetime.c dir.c dl.c dns.c exec.c file.c filestat.c \
                            flock_compat.c formatted_print.c fsock.c head.c html.c image.c \
                            info.c iptc.c lcg.c link.c mail.c math.c md5.c metaphone.c \
                            microtime.c pack.c pageinfo.c quot_print.c rand.c \
                            soundex.c string.c scanf.c syslog.c type.c uniqid.c url.c \
                            var.c versioning.c assert.c strnatcmp.c levenshtein.c \
                            incomplete_class.c url_scanner_ex.c ftp_fopen_wrapper.c \
                            http_fopen_wrapper.c php_fopen_wrapper.c credits.c css.c \
                            var_unserializer.c ftok.c sha1.c user_filters.c uuencode.c \
                            filters.c proc_open.c streamsfuncs.c http.c)

PHP_ADD_MAKEFILE_FRAGMENT
PHP_INSTALL_HEADERS([ext/standard/])