dnl $Id$
dnl Process this file with autoconf to produce a configure script.
AC_INIT(lib/urldata.h)
AM_CONFIG_HEADER(config.h src/config.h)

VERSION=`sed -ne 's/^#define LIBCURL_VERSION "\(.*\)"/\1/p' ${srcdir}/include/curl/curl.h`
AM_INIT_AUTOMAKE(curl,$VERSION)
AM_PROG_LIBTOOL

dnl
dnl Detect the canonical host and target build environment
dnl
AC_CANONICAL_HOST
AC_CANONICAL_TARGET

dnl Checks for programs.
AC_PROG_CC

dnl Check for AIX weirdos
AC_AIX

dnl check for how to do large files
AC_SYS_LARGEFILE

dnl The install stuff has already been taken care of by the automake stuff
dnl AC_PROG_INSTALL
AC_PROG_MAKE_SET

AC_DEFUN(CURL_CHECK_LOCALTIME_R,
[
  dnl check for a few thread-safe functions
  AC_CHECK_FUNCS(localtime_r,[
    AC_MSG_CHECKING(whether localtime_r is declared)
    AC_EGREP_CPP(localtime_r,[
#include <time.h>],[
      AC_MSG_RESULT(yes)],[
      AC_MSG_RESULT(no)
      AC_MSG_CHECKING(whether localtime_r with -D_REENTRANT is declared)
      AC_EGREP_CPP(localtime_r,[
#define _REENTRANT
#include <time.h>],[
	AC_DEFINE(NEED_REENTRANT)
	AC_MSG_RESULT(yes)],
	AC_MSG_RESULT(no))])])
])

AC_DEFUN(CURL_CHECK_INET_NTOA_R,
[
  dnl determine if function definition for inet_ntoa_r exists.
  AC_CHECK_FUNCS(inet_ntoa_r,[
    AC_MSG_CHECKING(whether inet_ntoa_r is declared)
    AC_EGREP_CPP(inet_ntoa_r,[
#include <arpa/inet.h>],[
      AC_DEFINE(HAVE_INET_NTOA_R_DECL)
      AC_MSG_RESULT(yes)],[
      AC_MSG_RESULT(no)
      AC_MSG_CHECKING(whether inet_ntoa_r with -D_REENTRANT is declared)
      AC_EGREP_CPP(inet_ntoa_r,[
#define _REENTRANT
#include <arpa/inet.h>],[
	AC_DEFINE(HAVE_INET_NTOA_R_DECL)
	AC_DEFINE(NEED_REENTRANT)
	AC_MSG_RESULT(yes)],
	AC_MSG_RESULT(no))])])

])

AC_DEFUN(CURL_CHECK_GETHOSTBYADDR_R,
[
  dnl check for number of arguments to gethostbyaddr_r. it might take
  dnl either 5, 7, or 8 arguments.
  AC_CHECK_FUNCS(gethostbyaddr_r,[
    AC_MSG_CHECKING(if gethostbyaddr_r takes 5 arguments)
    AC_TRY_COMPILE([
#include <sys/types.h>
#include <netdb.h>],[
char * address;
int length;
int type;
struct hostent h;
struct hostent_data hdata;
int rc;
rc = gethostbyaddr_r(address, length, type, &h, &hdata);],[
      AC_MSG_RESULT(yes)
      AC_DEFINE(HAVE_GETHOSTBYADDR_R_5)
      ac_cv_gethostbyaddr_args=5],[
      AC_MSG_RESULT(no)
      AC_MSG_CHECKING(if gethostbyaddr_r with -D_REENTRANT takes 5 arguments)
      AC_TRY_COMPILE([
#define _REENTRANT
#include <sys/types.h>
#include <netdb.h>],[
char * address;
int length;
int type;
struct hostent h;
struct hostent_data hdata;
int rc;
rc = gethostbyaddr_r(address, length, type, &h, &hdata);],[
	AC_MSG_RESULT(yes)
	AC_DEFINE(HAVE_GETHOSTBYADDR_R_5)
	AC_DEFINE(NEED_REENTRANT)
	ac_cv_gethostbyaddr_args=5],[
	AC_MSG_RESULT(no)
	AC_MSG_CHECKING(if gethostbyaddr_r takes 7 arguments)
	AC_TRY_COMPILE([
#include <sys/types.h>
#include <netdb.h>],[
char * address;
int length;
int type;
struct hostent h;
char buffer[8192];
int h_errnop;
struct hostent * hp;

hp = gethostbyaddr_r(address, length, type, &h,
                     buffer, 8192, &h_errnop);],[
	  AC_MSG_RESULT(yes)
	  AC_DEFINE(HAVE_GETHOSTBYADDR_R_7)
	  ac_cv_gethostbyaddr_args=7],[
	  AC_MSG_RESULT(no)
	  AC_MSG_CHECKING(if gethostbyaddr_r takes 8 arguments)
	  AC_TRY_COMPILE([
#include <sys/types.h>
#include <netdb.h>],[
char * address;
int length;
int type;
struct hostent h;
char buffer[8192];
int h_errnop;
struct hostent * hp;
int rc;

rc = gethostbyaddr_r(address, length, type, &h,
                     buffer, 8192, &hp, &h_errnop);],[
	    AC_MSG_RESULT(yes)
	    AC_DEFINE(HAVE_GETHOSTBYADDR_R_8)
	    ac_cv_gethostbyaddr_args=8],[
	    AC_MSG_RESULT(no)
	    have_missing_r_funcs="$have_missing_r_funcs gethostbyaddr_r"])])])])])


])

AC_DEFUN(CURL_CHECK_GETHOSTBYNAME_R,
[
  dnl check for number of arguments to gethostbyname_r. it might take
  dnl either 3, 5, or 6 arguments.
  AC_CHECK_FUNCS(gethostbyname_r,[
    AC_MSG_CHECKING(if gethostbyname_r takes 3 arguments)
    AC_TRY_RUN([
#include <string.h>
#include <sys/types.h>
#include <netdb.h>

int
main () {
struct hostent h;
struct hostent_data hdata;
char *name = "localhost";
int rc;
memset(&h, 0, sizeof(struct hostent));
memset(&hdata, 0, sizeof(struct hostent_data));
rc = gethostbyname_r(name, &h, &hdata);
exit (rc != 0 ? 1 : 0); }],[
      AC_MSG_RESULT(yes)
      AC_DEFINE(HAVE_GETHOSTBYNAME_R_3)
      ac_cv_gethostbyname_args=3],[
      AC_MSG_RESULT(no)
      AC_MSG_CHECKING(if gethostbyname_r with -D_REENTRANT takes 3 arguments)
      AC_TRY_RUN([
#define _REENTRANT

#include <string.h>
#include <sys/types.h>
#include <netdb.h>

int
main () {
struct hostent h;
struct hostent_data hdata;
char *name = "localhost";
int rc;
memset(&h, 0, sizeof(struct hostent));
memset(&hdata, 0, sizeof(struct hostent_data));
rc = gethostbyname_r(name, &h, &hdata);
exit (rc != 0 ? 1 : 0); }],[
	AC_MSG_RESULT(yes)
	AC_DEFINE(HAVE_GETHOSTBYNAME_R_3)
	AC_DEFINE(NEED_REENTRANT)
	ac_cv_gethostbyname_args=3],[
	AC_MSG_RESULT(no)
	AC_MSG_CHECKING(if gethostbyname_r takes 5 arguments)
	AC_TRY_RUN([
#include <sys/types.h>
#include <netdb.h>

int
main () {
struct hostent *hp;
struct hostent h;
char *name = "localhost";
char buffer[8192];
int h_errno;
hp = gethostbyname_r(name, &h, buffer, 8192, &h_errno);
exit (hp == NULL ? 1 : 0); }],[
	  AC_MSG_RESULT(yes)
	  AC_DEFINE(HAVE_GETHOSTBYNAME_R_5)
          ac_cv_gethostbyname_args=5],[
	  AC_MSG_RESULT(no)
	  AC_MSG_CHECKING(if gethostbyname_r takes 6 arguments)
	  AC_TRY_RUN([
#include <sys/types.h>
#include <netdb.h>

int
main () {
struct hostent h;
struct hostent *hp;
char *name = "localhost";
char buf[8192];
int rc;
int h_errno;
rc = gethostbyname_r(name, &h, buf, 8192, &hp, &h_errno);
exit (rc != 0 ? 1 : 0); }],[
	    AC_MSG_RESULT(yes)
	    AC_DEFINE(HAVE_GETHOSTBYNAME_R_6)
            ac_cv_gethostbyname_args=6],[
	    AC_MSG_RESULT(no)
	    have_missing_r_funcs="$have_missing_r_funcs gethostbyname_r"],
	    [ac_cv_gethostbyname_args=0])],
	  [ac_cv_gethostbyname_args=0])],
	[ac_cv_gethostbyname_args=0])],
      [ac_cv_gethostbyname_args=0])])

])


dnl **********************************************************************
dnl Checks for libraries.
dnl **********************************************************************

dnl gethostbyname in the nsl lib?
AC_CHECK_FUNC(gethostbyname, , AC_CHECK_LIB(nsl, gethostbyname))

if test "$ac_cv_lib_nsl_gethostbyname" != "yes" -a "$ac_cv_func_gethostbyname" != "yes"; then
  dnl gethostbyname in the socket lib?
  AC_CHECK_FUNC(gethostbyname, , AC_CHECK_LIB(socket, gethostbyname))
fi

dnl At least one system has been identified to require BOTH nsl and
dnl socket libs to link properly.
if test "$ac_cv_lib_nsl_gethostbyname" = "$ac_cv_func_gethostbyname"; then
  AC_MSG_CHECKING([trying both nsl and socket libs])
  my_ac_save_LIBS=$LIBS
  LIBS="-lnsl -lsocket $LIBS"
  AC_TRY_LINK( ,
             [gethostbyname();],
             my_ac_link_result=success,
             my_ac_link_result=failure )

  if test "$my_ac_link_result" = "failure"; then
    AC_MSG_RESULT([no])
    AC_MSG_ERROR([couldn't find libraries for gethostbyname()])
    dnl restore LIBS
    LIBS=$my_ac_save_LIBS
  else
    AC_MSG_RESULT([yes])
  fi
fi

dnl resolve lib?
AC_CHECK_FUNC(strcasecmp, , AC_CHECK_LIB(resolve, strcasecmp))

if test "$ac_cv_lib_resolve_strcasecmp" = "$ac_cv_func_strcasecmp"; then
  AC_CHECK_LIB(resolve, strcasecmp,
              [LIBS="-lresolve $LIBS"],
               ,
               -lnsl)
fi

dnl socket lib?
AC_CHECK_FUNC(connect, , AC_CHECK_LIB(socket, connect))

dnl ucb lib?
AC_CHECK_FUNC(gethostname, , AC_CHECK_LIB(ucb, gethostname))

dnl dl lib?
AC_CHECK_FUNC(dlopen, , AC_CHECK_LIB(dl, dlopen))

dnl **********************************************************************
dnl Check for the presence of Kerberos4 libraries and headers
dnl **********************************************************************

AC_ARG_WITH(krb4-includes,
 [  --with-krb4-includes[=DIR]   Specify location of kerberos4 headers],[
 CPPFLAGS="$CPPFLAGS -I$withval"
 KRB4INC="$withval"
 want_krb4=yes
 ])

AC_ARG_WITH(krb4-libs,
 [  --with-krb4-libs[=DIR]   Specify location of kerberos4 libs],[
 LDFLAGS="$LDFLAGS -L$withval"
 KRB4LIB="$withval"
 want_krb4=yes
 ])


OPT_KRB4=off
AC_ARG_WITH(krb4,dnl
[  --with-krb4[=DIR]       where to look for Kerberos4],[
  OPT_KRB4="$withval"
  if test X"$OPT_KRB4" != Xyes
  then
    LDFLAGS="$LDFLAGS -L$OPT_KRB4/lib"
    KRB4LIB="$OPT_KRB4/lib"
    CPPFLAGS="$CPPFLAGS -I$OPT_KRB4/include"
    KRB4INC="$OPT_KRB4/include"
  fi
  want_krb4="yes"
 ])

AC_MSG_CHECKING([if Kerberos4 support is requested])

if test "$want_krb4" = yes
then
  AC_MSG_RESULT(yes)

  dnl Check for & handle argument to --with-krb4

  AC_MSG_CHECKING(where to look for Kerberos4)
  if test X"$OPT_KRB4" = Xyes
  then
    AC_MSG_RESULT([defaults])
  else
    AC_MSG_RESULT([libs in $KRB4LIB, headers in $KRB4INC])
  fi

  dnl Check for DES library
  AC_CHECK_LIB(des, des_pcbc_encrypt,
  [
    AC_CHECK_HEADERS(des.h)

    dnl resolv lib?
    AC_CHECK_FUNC(res_search, , AC_CHECK_LIB(resolv, res_search))

    dnl Check for the Kerberos4 library
    AC_CHECK_LIB(krb, krb_net_read,
    [
      dnl Check for header files
      AC_CHECK_HEADERS(krb.h)

      dnl we found the required libraries, add to LIBS
      LIBS="-lkrb -ldes $LIBS"

      dnl Check for function krb_get_our_ip_for_realm
      dnl this is needed for NAT networks
      AC_CHECK_FUNCS(krb_get_our_ip_for_realm)

      dnl add define KRB4
      AC_DEFINE(KRB4)

      dnl the krb4 stuff needs a strlcpy()
      AC_CHECK_FUNCS(strlcpy)

    ])
  ])
else
  AC_MSG_RESULT(no)
fi

dnl **********************************************************************
dnl Check for the presence of SSL libraries and headers
dnl **********************************************************************

dnl Default to compiler & linker defaults for SSL files & libraries.
OPT_SSL=off
AC_ARG_WITH(ssl,dnl
[  --with-ssl[=DIR]        where to look for SSL [compiler/linker default paths]
                          DIR points to the SSL installation [/usr/local/ssl]],
  OPT_SSL=$withval
)

if test X"$OPT_SSL" = Xno
then
  AC_MSG_WARN(SSL/https support disabled)  
else

  dnl Check for & handle argument to --with-ssl.

  AC_MSG_CHECKING(where to look for SSL)
  if test X"$OPT_SSL" = Xoff
  then
  	AC_MSG_RESULT([defaults (or given in environment)])
  else
	test X"$OPT_SSL" = Xyes && OPT_SSL=/usr/local/ssl
        dnl	LIBS="$LIBS -L$OPT_SSL/lib"
        LDFLAGS="$LDFLAGS -L$OPT_SSL/lib"
	CPPFLAGS="$CPPFLAGS -I$OPT_SSL/include/openssl -I$OPT_SSL/include"
	AC_MSG_RESULT([$OPT_SSL])
  fi

  dnl check for crypto libs (part of SSLeay)
  AC_CHECK_LIB(crypto, CRYPTO_lock)

  if test $ac_cv_lib_crypto_CRYPTO_lock = yes; then
    dnl This is only reasonable to do if crypto actually is there: check for
    dnl SSL libs NOTE: it is important to do this AFTER the crypto lib
    AC_CHECK_LIB(ssl, SSL_connect)

    if test "$ac_cv_lib_ssl_SSL_connect" != yes; then
        dnl we didn't find the SSL lib, try the RSAglue/rsaref stuff
        AC_MSG_CHECKING(for ssl with RSAglue/rsaref libs in use);
        OLIBS=$LIBS
        LIBS="$LIBS -lRSAglue -lrsaref"
        AC_CHECK_LIB(ssl, SSL_connect)
        if test "$ac_cv_lib_ssl_SSL_connect" != yes; then
            dnl still no SSL_connect
            AC_MSG_RESULT(no)
            LIBS=$OLIBS
        else
            AC_MSG_RESULT(yes)
        fi
    fi


    dnl Check for SSLeay headers
    AC_CHECK_HEADERS(openssl/x509.h openssl/rsa.h openssl/crypto.h openssl/pem.h openssl/ssl.h openssl/err.h)

    if test $ac_cv_header_openssl_x509_h = no; then
      AC_CHECK_HEADERS(x509.h rsa.h crypto.h pem.h ssl.h err.h)
    fi

  fi

  dnl these can only exist if openssl exists

  AC_CHECK_FUNCS( RAND_status \
                  RAND_screen )

fi

dnl **********************************************************************
dnl Check for the presence of ZLIB libraries and headers
dnl **********************************************************************

dnl Default to compiler & linker defaults for files & libraries.
dnl OPT_ZLIB=no
dnl AC_ARG_WITH(zlib,dnl
dnl [  --with-zlib[=DIR]  where to look for ZLIB [compiler/linker default paths]
dnl                      DIR points to the ZLIB installation prefix [/usr/local]],
dnl  OPT_ZLIB=$withval,
dnl )

dnl Check for & handle argument to --with-zlib.
dnl
dnl NOTE:  We *always* look for ZLIB headers & libraries, all this option
dnl        does is change where we look (by adjusting LIBS and CPPFLAGS.)
dnl

dnl AC_MSG_CHECKING(where to look for ZLIB)
dnl if test X"$OPT_ZLIB" = Xno
dnl then
dnl 	AC_MSG_RESULT([defaults (or given in environment)])
dnl else
dnl	test X"$OPT_ZLIB" = Xyes && OPT_ZLIB=/usr/local
dnl	LIBS="$LIBS -L$OPT_ZLIB/lib"
dnl	CPPFLAGS="$CPPFLAGS -I$OPT_ZLIB/include"
dnl	AC_MSG_RESULT([$OPT_ZLIB])
dnl fi

dnl z lib?
dnl AC_CHECK_FUNC(gzread, , AC_CHECK_LIB(z, gzread))


dnl Default is to try the thread-safe versions of a few functions
OPT_THREAD=on
AC_ARG_ENABLE(thread,dnl
[  --disable-thread       tell configure to not look for thread-safe functions],
  OPT_THREAD=off
)

if test X"$OPT_THREAD" = Xoff
then
  AC_MSG_WARN(libcurl will not get built using thread-safe functions)
  AC_DEFINE(DISABLED_THREADSAFE, 1, \
Set to explicitly specify we don't want to use thread-safe functions)
else

  dnl dig around for gethostbyname_r()
  CURL_CHECK_GETHOSTBYNAME_R()

  dnl dig around for gethostbyaddr_r()
  CURL_CHECK_GETHOSTBYADDR_R()

  dnl poke around for inet_ntoa_r()
  CURL_CHECK_INET_NTOA_R()

  dnl is there a localtime_r()
  CURL_CHECK_LOCALTIME_R()

fi

dnl **********************************************************************
dnl Back to "normal" configuring
dnl **********************************************************************

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS( \
        unistd.h \
        malloc.h \
        stdlib.h \
        arpa/inet.h \
        net/if.h \
        netinet/in.h \
	netinet/if_ether.h \
        netdb.h \
        sys/select.h \
        sys/socket.h \
        sys/sockio.h \
        sys/stat.h \
        sys/types.h \
        sys/time.h \
        getopt.h \
        sys/param.h \
        termios.h \
        termio.h \
        sgtty.h \
        fcntl.h \
        dlfcn.h \
        alloca.h \
        winsock.h \
        time.h \
        io.h \
)

dnl Check for libz header
dnl AC_CHECK_HEADERS(zlib.h)

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

# mprintf() checks:

# check for 'long double'
AC_CHECK_SIZEOF(long double, 8)
# check for 'long long'
AC_CHECK_SIZEOF(long long, 4)

dnl Get system canonical name
AC_CANONICAL_HOST
AC_DEFINE_UNQUOTED(OS, "${host}")

dnl Checks for library functions.
dnl AC_PROG_GCC_TRADITIONAL
AC_TYPE_SIGNAL
dnl AC_FUNC_VPRINTF
AC_CHECK_FUNCS( socket \
                select \
                strdup \
                strstr \
                strftime \
                uname \
                strcasecmp \
                stricmp \
                strcmpi \
                gethostname \
                gethostbyaddr \
                getservbyname \
                gettimeofday \
                inet_addr \
                inet_ntoa \
                tcsetattr \
                tcgetattr \
                perror \
                closesocket \
                setvbuf \
                sigaction \
                signal \
                getpass_r
)

dnl removed 'getpass' check on October 26, 2000

if test "$ac_cv_func_select" != "yes"; then
  AC_MSG_ERROR(Can't work without an existing socket() function)
fi

AC_PATH_PROG( PERL, perl, , 
  $PATH:/usr/local/bin/perl:/usr/bin/:/usr/local/bin )
AC_SUBST(PERL)

AC_PATH_PROGS( NROFF, gnroff nroff, , 
  $PATH:/usr/bin/:/usr/local/bin )
AC_SUBST(NROFF)

AC_PROG_YACC

dnl AC_PATH_PROG( RANLIB, ranlib, /usr/bin/ranlib, 
dnl   $PATH:/usr/bin/:/usr/local/bin )
dnl AC_SUBST(RANLIB)

AC_OUTPUT( Makefile \
	   docs/Makefile \
           docs/examples/Makefile \
	   include/Makefile \
	   include/curl/Makefile \
	   src/Makefile \
           lib/Makefile \
           tests/Makefile \
           tests/data/Makefile \
	   packages/Makefile \
	   packages/Win32/Makefile \
	   packages/Linux/Makefile \
	   packages/Linux/RPM/Makefile \
	   packages/Linux/RPM/curl.spec \
	   packages/Linux/RPM/curl-ssl.spec )