build: Various OpenBSD issues

OpenBSD's 'find' doesn't take the -delete argument so you have to pipe
through 'xargs rm -rf'.

'echo -e' doesn't like \t starting a line. It just prints 't' which
causes the libasteriskpj.exports file to be garbage.  They were just
cosmetic so they were removed.

librt doesn't exist so the link of libasteriskpj.so fails. It's not
actually needed for linux anyway so -lrt was removed from the link.

res_rtp_asterisk was failing to load because of an undefined
DTLS_method. '|| defined(LIBRESSL_VERSION_NUMBER)' was added to the #if
so DTLSv1_method is used instead.

ASTERISK-26608

Change-Id: I926ec95b0b69633231e3ad1d6e803b977272c49c

main/Makefile

@@ -279,15 +279,15 @@ ASTPJ_LIB:=libasteriskpj.so
 libasteriskpj.exports: $(ASTTOPDIR)/$(PJPROJECT_DIR)/pjproject.symbols
 	$(ECHO_PREFIX) echo "   [GENERATE] libasteriskpj.exports"
 ifeq ($(GNU_LD),1)
-	$(CMD_PREFIX) echo -e "{\n\tglobal:" > libasteriskpj.exports
-	$(CMD_PREFIX) sed -r -e "s/.*/\t\t$(LINKER_SYMBOL_PREFIX)&;/" $(ASTTOPDIR)/$(PJPROJECT_DIR)/pjproject.symbols >> libasteriskpj.exports
-	$(CMD_PREFIX) echo -e "\t\t$(LINKER_SYMBOL_PREFIX)ast_pj_init;\n" >> libasteriskpj.exports
-	$(CMD_PREFIX) echo -e "\tlocal:\n\t\t*;\n};" >> libasteriskpj.exports
+	$(CMD_PREFIX) echo -e "{\nglobal:" > libasteriskpj.exports
+	$(CMD_PREFIX) sed -r -e "s/.*/$(LINKER_SYMBOL_PREFIX)&;/" $(ASTTOPDIR)/$(PJPROJECT_DIR)/pjproject.symbols >> libasteriskpj.exports
+	$(CMD_PREFIX) echo -e "$(LINKER_SYMBOL_PREFIX)ast_pj_init;\n" >> libasteriskpj.exports
+	$(CMD_PREFIX) echo -e "local:\n*;\n};" >> libasteriskpj.exports
 endif
 
 $(ASTPJ_LIB).$(ASTPJ_SO_VERSION): _ASTLDFLAGS+=-Wl,-soname=$(ASTPJ_LIB) $(PJ_LDFLAGS)
 $(ASTPJ_LIB).$(ASTPJ_SO_VERSION): _ASTCFLAGS+=-fPIC -DAST_MODULE=\"asteriskpj\" -DAST_NOT_MODULE $(PJ_CFLAGS)
-$(ASTPJ_LIB).$(ASTPJ_SO_VERSION): LIBS+=$(PJPROJECT_LDLIBS) -lssl -lcrypto -luuid -lm -lrt -lpthread
+$(ASTPJ_LIB).$(ASTPJ_SO_VERSION): LIBS+=$(PJPROJECT_LDLIBS) -lssl -lcrypto -luuid -lm -lpthread
 ifeq ($(GNU_LD),1)
     $(ASTPJ_LIB).$(ASTPJ_SO_VERSION): SO_SUPPRESS_SYMBOLS=-Wl,--version-script,libasteriskpj.exports,--warn-common
 endif

res/res_rtp_asterisk.c

@@ -1365,7 +1365,7 @@ static int ast_rtp_dtls_set_configuration(struct ast_rtp_instance *instance, con
 		return 0;
 	}
 
-#if OPENSSL_VERSION_NUMBER < 0x10002000L
+#if OPENSSL_VERSION_NUMBER < 0x10002000L || defined(LIBRESSL_VERSION_NUMBER)
 	rtp->ssl_ctx = SSL_CTX_new(DTLSv1_method());
 #else
 	rtp->ssl_ctx = SSL_CTX_new(DTLS_method());

third-party/pjproject/Makefile

@@ -193,9 +193,9 @@ clean:
 	$(ECHO_PREFIX) Cleaning
 	+-$(CMD_PREFIX) test -d source && ($(SUBMAKE) -C source clean || : ;\
 		rm -rf source/pjsip-apps/bin/* || : ;\
-		find source -name *.a -delete ;\
-		find source -name *.o -delete ;\
-		find source -name *.so -delete ; ) || :
+		find source -name *.a | xargs rm -rf  ;\
+		find source -name *.o | xargs rm -rf  ;\
+		find source -name *.so  | xargs rm -rf ; ) || :
 	-$(CMD_PREFIX) rm -rf pjproject.symbols
 
 distclean: