BuildSystem: Instead of $PJPROJECT_LIBS with s, use $PJPROJECT_LIB everywhere.

In the script ./configure,
xyz_LIB  is set by AST_PKG_CONFIG_CHECK and
xyz_LIBS is set by PKG_CHECK_MODULES within
AST_PKG_CONFIG_CHECK. Both are the same. In Asterisk normally the former and
only three times the latter was used. Let us use xyz_LIB without s, for
consistency with AST_EXT_LIB_CHECK. That eases understanding because now readers
do not have to know that xyz_LIB equals xyz_LIBS.

Change-Id: I7359860a5d730cdc784c2c48e501a082196434d3

configure

@@ -24572,7 +24572,7 @@ if ${ac_cv_lib_pjsip_pjsip_dlg_create_uas_and_inc_lock+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
-LIBS="-lpjsip ${pbxlibdir} $PJPROJECT_LIBS $LIBS"
+LIBS="-lpjsip ${pbxlibdir} $PJPROJECT_LIB $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -24613,7 +24613,7 @@ fi
 
    # now check for the header.
    if test "${AST_PJSIP_DLG_CREATE_UAS_AND_INC_LOCK_FOUND}" = "yes"; then
-      PJSIP_DLG_CREATE_UAS_AND_INC_LOCK_LIB="${pbxlibdir} -lpjsip $PJPROJECT_LIBS"
+      PJSIP_DLG_CREATE_UAS_AND_INC_LOCK_LIB="${pbxlibdir} -lpjsip $PJPROJECT_LIB"
       # if --with-PJSIP_DLG_CREATE_UAS_AND_INC_LOCK=DIR has been specified, use it.
       if test "x${PJSIP_DLG_CREATE_UAS_AND_INC_LOCK_DIR}" != "x"; then
          PJSIP_DLG_CREATE_UAS_AND_INC_LOCK_INCLUDE="-I${PJSIP_DLG_CREATE_UAS_AND_INC_LOCK_DIR}/include"
@@ -25004,7 +25004,7 @@ if ${ac_cv_lib_pjsip_pjsip_endpt_set_ext_resolver+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
-LIBS="-lpjsip ${pbxlibdir} $PJPROJECT_LIBS $LIBS"
+LIBS="-lpjsip ${pbxlibdir} $PJPROJECT_LIB $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -25045,7 +25045,7 @@ fi
 
    # now check for the header.
    if test "${AST_PJSIP_EXTERNAL_RESOLVER_FOUND}" = "yes"; then
-      PJSIP_EXTERNAL_RESOLVER_LIB="${pbxlibdir} -lpjsip $PJPROJECT_LIBS"
+      PJSIP_EXTERNAL_RESOLVER_LIB="${pbxlibdir} -lpjsip $PJPROJECT_LIB"
       # if --with-PJSIP_EXTERNAL_RESOLVER=DIR has been specified, use it.
       if test "x${PJSIP_EXTERNAL_RESOLVER_DIR}" != "x"; then
          PJSIP_EXTERNAL_RESOLVER_INCLUDE="-I${PJSIP_EXTERNAL_RESOLVER_DIR}/include"

configure.ac

@@ -2215,7 +2215,7 @@ if test "$USE_PJPROJECT" != "no" ; then
    if test "$PJPROJECT_BUNDLED" = "no" ; then
       AST_PKG_CONFIG_CHECK([PJPROJECT], [libpjproject])
 
-      AST_EXT_LIB_CHECK([PJSIP_DLG_CREATE_UAS_AND_INC_LOCK], [pjsip], [pjsip_dlg_create_uas_and_inc_lock], [pjsip.h], [$PJPROJECT_LIBS], [$PJPROJECT_CFLAGS])
+      AST_EXT_LIB_CHECK([PJSIP_DLG_CREATE_UAS_AND_INC_LOCK], [pjsip], [pjsip_dlg_create_uas_and_inc_lock], [pjsip.h], [$PJPROJECT_LIB], [$PJPROJECT_CFLAGS])
       AST_EXT_LIB_CHECK([PJ_TRANSACTION_GRP_LOCK], [pjsip], [pjsip_tsx_create_uac2], [pjsip.h], [$PJPROJECT_LIB], [$PJPROJECT_CFLAGS])
 
       saved_cppflags="${CPPFLAGS}"
@@ -2228,7 +2228,7 @@ if test "$USE_PJPROJECT" != "no" ; then
 
       AST_EXT_LIB_CHECK([PJSIP_GET_DEST_INFO], [pjsip], [pjsip_get_dest_info], [pjsip.h], [$PJPROJECT_LIB], [$PJPROJECT_CFLAGS])
       AST_EXT_LIB_CHECK([PJ_SSL_CERT_LOAD_FROM_FILES2], [pj], [pj_ssl_cert_load_from_files2], [pjlib.h], [$PJPROJECT_LIB], [$PJPROJECT_CFLAGS])
-      AST_EXT_LIB_CHECK([PJSIP_EXTERNAL_RESOLVER], [pjsip], [pjsip_endpt_set_ext_resolver], [pjsip.h], [$PJPROJECT_LIBS], [$PJPROJECT_CFLAGS])
+      AST_EXT_LIB_CHECK([PJSIP_EXTERNAL_RESOLVER], [pjsip], [pjsip_endpt_set_ext_resolver], [pjsip.h], [$PJPROJECT_LIB], [$PJPROJECT_CFLAGS])
 
       saved_cppflags="${CPPFLAGS}"
       saved_libs="${LIBS}"

main/Makefile

@@ -297,7 +297,7 @@ ASTPJ_LIB:=libasteriskpj.dylib
 # /lib or /usr/lib
 $(ASTPJ_LIB): _ASTLDFLAGS+=-dynamiclib -install_name $(ASTLIBDIR)/$(ASTPJ_LIB) $(PJ_LDFLAGS)
 $(ASTPJ_LIB): _ASTCFLAGS+=-fPIC -DAST_MODULE=\"asteriskpj\" $(PJ_CFLAGS)
-$(ASTPJ_LIB): LIBS+=$(PJPROJECT_LIBS)  $(OPENSSL_LIB) $(UUID_LIB) -lm -lpthread $(RT_LIB)
+$(ASTPJ_LIB): LIBS+=$(PJPROJECT_LIB) $(OPENSSL_LIB) $(UUID_LIB) -lm -lpthread $(RT_LIB)
 $(ASTPJ_LIB): SOLINK=$(DYLINK)
 
 # Special rules for building a shared library (not a dynamically loadable module)