[autobuild] remove mod_authn_gssapi dep on resolv

remove mod_authn_gssapi explicit dependency on -lresolv
This fixes build on FreeBSD when ./configure --with-krb5
(On systems that need libresolv, libkrb5 depends on libresolv)

Also remove obsolete hstrerror() references from build

SConstruct

@@ -228,7 +228,7 @@ if 1:
 	autoconf.env.Append( LIBSQLITE3 = '', LIBXML2 = '', LIBMYSQL = '', LIBZ = '',
 		LIBBZ2 = '', LIBCRYPT = '', LIBMEMCACHED = '', LIBFCGI = '', LIBPCRE = '',
 		LIBLDAP = '', LIBLBER = '', LIBLUA = '', LIBDL = '', LIBUUID = '',
-		LIBRESOLV = '', LIBKRB5 = '', LIBGSSAPI_KRB5 = '')
+		LIBKRB5 = '', LIBGSSAPI_KRB5 = '')
 
 	if env['with_fam']:
 		if autoconf.CheckLibWithHeader('fam', 'fam.h', 'C'):
@@ -261,8 +261,6 @@ if 1:
 	if env['with_krb5']:
 		if autoconf.CheckLibWithHeader('krb5', 'krb5.h', 'C'):
 			autoconf.env.Append(CPPFLAGS = [ '-DHAVE_KRB5' ], LIBKRB5 = 'krb5')
-		if autoconf.CheckLibWithHeader('resolv', 'resolv.h', 'C'):
-			autoconf.env.Append(LIBRESOLV = 'resolv')
 		if autoconf.CheckLibWithHeader('gssapi_krb5', 'gssapi/gssapi_krb5.h', 'C'):
 			autoconf.env.Append(LIBGSSAPI_KRB5 = 'gssapi_krb5')
 

configure.ac

@@ -281,7 +281,6 @@ fi
 dnl openssl on solaris needs -lsocket -lnsl
 AC_SEARCH_LIBS(socket,socket)
 AC_SEARCH_LIBS(gethostbyname,nsl socket)
-AC_SEARCH_LIBS(hstrerror,resolv)
 
 dnl On Haiku accept() and friends are in libnetwork
 AC_SEARCH_LIBS(accept,network)
@@ -353,7 +352,7 @@ AC_ARG_WITH(krb5-libs,
 if test "x$use_krb5" = "xyes"; then
 	AC_CHECK_LIB(gssapi_krb5, gss_acquire_cred, [
 		AC_CHECK_HEADERS([gssapi/gssapi_krb5.h],[
-			KRB5_LIB="-lresolv -lkrb5 -lgssapi_krb5"
+			KRB5_LIB="-lkrb5 -lgssapi_krb5"
 			AC_DEFINE(HAVE_KRB5, [1], [libgssapi_krb5])
 		])
 	])

src/CMakeLists.txt

@@ -684,7 +684,7 @@ endif()
 target_link_libraries(mod_authn_file ${L_MOD_AUTHN_FILE})
 
 if(HAVE_KRB5)
-	set(L_MOD_AUTHN_GSSAPI ${L_MOD_AUTHN_GSSAPI} resolv krb5 gssapi_krb5)
+	set(L_MOD_AUTHN_GSSAPI ${L_MOD_AUTHN_GSSAPI} krb5 gssapi_krb5)
 	add_and_install_library(mod_authn_gssapi "mod_authn_gssapi.c")
 	target_link_libraries(mod_authn_gssapi ${L_MOD_AUTHN_GSSAPI})
 endif()

src/SConscript

@@ -104,7 +104,7 @@ modules = {
 	'mod_rewrite' : { 'src' : [ 'mod_rewrite.c' ], 'lib' : [ env['LIBPCRE'] ] },
 	'mod_auth' : { 'src' : [ 'mod_auth.c' ] },
 	'mod_authn_file' : { 'src' : [ 'mod_authn_file.c' ], 'lib' : [ env['LIBCRYPT'] ] },
-	'mod_authn_gssapi' : { 'src' : [ 'mod_authn_gssapi.c' ], 'lib' : [ env['LIBRESOLV'], env['LIBKRB5'], env['LIBGSSAPI_KRB5'] ] },
+	'mod_authn_gssapi' : { 'src' : [ 'mod_authn_gssapi.c' ], 'lib' : [ env['LIBKRB5'], env['LIBGSSAPI_KRB5'] ] },
 	'mod_authn_ldap' : { 'src' : [ 'mod_authn_ldap.c' ], 'lib' : [ env['LIBLDAP'], env['LIBLBER'] ] },
 	'mod_authn_mysql' : { 'src' : [ 'mod_authn_mysql.c' ], 'lib' : [ env['LIBCRYPT'], env['LIBMYSQL'] ] },
 	'mod_webdav' : { 'src' : [ 'mod_webdav.c' ], 'lib' : [ env['LIBXML2'], env['LIBSQLITE3'], env['LIBUUID'] ] },

src/mod_authn_gssapi.c

@@ -24,7 +24,6 @@
 
 #ifdef HAVE_KRB5
 
-#include <resolv.h>
 #include <krb5.h>
 #include <gssapi.h>
 #include <gssapi/gssapi_krb5.h>

src/sys-socket.h

@@ -11,7 +11,6 @@
 #define EALREADY WSAEALREADY
 #define ECONNABORTED WSAECONNABORTED
 #define ioctl ioctlsocket
-#define hstrerror(x) ""
 #else
 #include <sys/socket.h>
 #include <sys/ioctl.h>