autotools: check for expat.h if pkg-config failed

Some distros provides libexpat without expat.pc. So PKG_CHECK_MODULES
fails even if libexpat is installed. To fix this AC_CHECK_HEADER added
back.

Makefile.am

@@ -5,10 +5,10 @@ AM_CFLAGS = -g -Wall
 PARSER_CFLAGS=@PARSER_CFLAGS@
 PARSER_LIBS=@PARSER_LIBS@
 
-SSL_LIBS = -lssl -lcrypto -lz
+SSL_LIBS = @openssl_LIBS@
 
 STROPHE_FLAGS = -I$(top_srcdir)
-STROPHE_LIBS = -lstrophe $(PARSER_LIBS) $(SSL_LIBS)
+STROPHE_LIBS = libstrophe.la
 
 ## Main build targets
 lib_LTLIBRARIES = libstrophe.la

README.markdown

@@ -56,10 +56,9 @@ check package.
 
 ### OS X (with Homebrew package manager)
 
-You can install the requirements with:
+You can install libstrophe with:
 
-    brew install expat
-    brew install check
+    brew install libstrophe
 
 ## Documentation
 

configure.ac

@@ -4,8 +4,14 @@ LT_INIT([dlopen])
 
 AC_PROG_CC
 AM_PROG_CC_C_O
+PKG_PROG_PKG_CONFIG
 
-AC_CHECK_HEADER(openssl/ssl.h, [], [AC_MSG_ERROR([couldn't find openssl headers, openssl required])])
+AC_CANONICAL_HOST
+AS_CASE([$host_os],
+  [freebsd*], [PLATFORM="freebsd"],
+  [PLATFORM="nix"])
+
+PKG_CHECK_MODULES([openssl], [openssl], [], [AC_MSG_ERROR([openssl not found; openssl required])])
 PKG_CHECK_MODULES([check], [check >= 0.9.4], [], [AC_MSG_WARN([libcheck not found; unit tests will not be compilable])])
 
 AC_ARG_WITH([libxml2],
@@ -18,32 +24,39 @@ if test "x$with_libxml2" != xno; then
                     [with_libxml2=yes], [dummy=1])
   if test "x$with_libxml2" != xyes; then
     old_CFLAGS=$CFLAGS
-    CFLAGS="-I /usr/include/libxml2"
+    CFLAGS="-I${includedir}/libxml2"
     AC_CHECK_HEADER([libxml/parser.h],
-                    [with_libxml2=yes; libxml2_CFLAGS="-I /usr/include/libxml2"; libxml2_LIBS="-lxml2"],
-                    [AC_MSG_ERROR([couldn't find libxml2])])
+                    [with_libxml2=yes; libxml2_CFLAGS="-I${includedir}/libxml2"; libxml2_LIBS="-lxml2"],
+                    [AC_MSG_ERROR([libxml2 not found.])])
     CFLAGS=$old_CFLAGS
   fi
 else
-  AC_CHECK_HEADER(expat.h, [], [AC_MSG_ERROR([couldn't find expat headers; expat required])])
+  PKG_CHECK_MODULES([expat], [expat >= 2.0.0], [],
+                    [AC_CHECK_HEADER(expat.h, [expat_LIBS="-lexpat"], [AC_MSG_ERROR([expat not found; expat required.])])])
 fi
 
 if test "x$with_libxml2" = xyes; then
   with_parser=libxml2
   PARSER_NAME=libxml2
-  PARSER_CFLAGS=\$\(libxml2_CFLAGS\)
-  PARSER_LIBS=\$\(libxml2_LIBS\)
+  PARSER_CFLAGS=$libxml2_CFLAGS
+  PARSER_LIBS=$libxml2_LIBS
 else
   with_parser=expat
   PARSER_NAME=expat
-  PARSER_CFLAGS=
-  PARSER_LIBS=-lexpat
+  PARSER_CFLAGS=$expat_CFLAGS
+  PARSER_LIBS=$expat_LIBS
 fi
 
 AC_MSG_NOTICE([libstrophe will use the $with_parser XML parser])
 AC_SEARCH_LIBS([socket], [socket])
 
-AC_LINK_IFELSE([AC_LANG_CALL([#include <resolv.h>], [res_query])], [],[LIBS="$LIBS -lresolv"])
+if test "x$PLATFORM" != xfreebsd; then
+        AC_CHECK_LIB([resolv], [res_query], [],
+            [AC_CHECK_LIB([resolv], [__res_query], [],
+                [AC_MSG_ERROR([libresolv not found; libresolv required. ])])])
+else
+        AC_MSG_NOTICE([skipping libresolv checks for freebsd])
+fi
 
 AC_CHECK_HEADERS([arpa/nameser_compat.h])
 

examples/bot.c

@@ -77,7 +77,7 @@ int message_handler(xmpp_conn_t * const conn, xmpp_stanza_t * const stanza, void
 	xmpp_ctx_t *ctx = (xmpp_ctx_t*)userdata;
 	
 	if(!xmpp_stanza_get_child_by_name(stanza, "body")) return 1;
-	if(!strcmp(xmpp_stanza_get_attribute(stanza, "type"), "error")) return 1;
+	if(xmpp_stanza_get_attribute(stanza, "type") !=NULL && !strcmp(xmpp_stanza_get_attribute(stanza, "type"), "error")) return 1;
 	
 	intext = xmpp_stanza_get_text(xmpp_stanza_get_child_by_name(stanza, "body"));