bundled_pjproject: Add tests for programs used by the Makefile, et al.

Added tests for bzip2, tar, patch, sed and nm to configure.ac.

Set DOWNLOAD_TO_STDOUT to a working command line regardless of
whether the download program is wget, curl or fetch.

Added a 'configure.m4' file to the third-party directory which takes
care of calling any third-party project setup.  Had to move some
pjproject_bundled stuff up in configure.ac so it was called before
the third-party configure macro.

The pjproject tarball is now downloaded to the externals_cache_dir if
it was specified on the ./configure command line

Removed regeneration of the pjproject aconfigure file.  It was only
needed for an old patch that no longer applies.

Converted the tests for symbols to explicit tests since we know that
they're now available in the bundled version.  Saves a little time
during configure.

ASTERISK-26416 #close
Reported-by: Corey Farrell

Change-Id: Id1d94251c0155f8dd41b7de7067f35cfbaafbb9b
(cherry picked from commit e6b0053d75)
(cherry picked from commit a0d02f3832)

third-party/pjproject/Makefile

@@ -7,8 +7,6 @@ SPECIAL_TARGETS :=
 ifneq ($(findstring configure,$(MAKECMDGOALS))$(findstring echo_cflags,$(MAKECMDGOALS)),)
 # Run from $(ASTTOPDIR)/configure
     SPECIAL_TARGETS += configure
-    include ../Makefile.rules
-    include Makefile.rules
 endif
 
 ifeq ($(findstring echo_cflags,$(MAKECMDGOALS)),echo_cflags)
@@ -19,8 +17,10 @@ endif
 ifeq ($(findstring clean,$(MAKECMDGOALS)),clean)
 # clean or distclean
     SPECIAL_TARGETS += clean
-    include ../Makefile.rules
-    include Makefile.rules
+endif
+
+ifneq ($(wildcard ../../makeopts),)
+    include ../../makeopts
 endif
 
 ifeq ($(SPECIAL_TARGETS),)
@@ -28,17 +28,17 @@ ifeq ($(SPECIAL_TARGETS),)
     ifeq ($(wildcard ../../makeopts),)
         $(error ASTTOPDIR/configure hasn't been run)
     endif
-    include ../../makeopts
 
     ifeq ($(PJPROJECT_BUNDLED),yes)
-        -include ../../menuselect.makeopts
-        include ../Makefile.rules
+        ifneq ($(wildcard ../../menuselect.makeopts),)
+            include ../../menuselect.makeopts
+        else
+            $(warning ASTTOPDIR/menuselect hasn't been run yet.  Can't find debug options.)
+        endif
 
         all: _all
         install: _install
 
-        include ../../Makefile.rules
-        include Makefile.rules
         include source/user.mak
         include source/build.mak
         CF := $(filter-out -W%,$(CC_CFLAGS))
@@ -66,25 +66,25 @@ ifeq ($(SPECIAL_TARGETS),)
     endif
 endif
 
+include ../../Makefile.rules
+include ../Makefile.rules
+include Makefile.rules
+
 ECHO_PREFIX := $(ECHO_PREFIX) echo '[pjproject] '
 
-ifndef $(TMPDIR)
-    ifneq ($(wildcard /tmp),)
-        TMPDIR=/tmp
-    else
-        TMPDIR=.
-    endif
-endif
+_all: $(TARGETS)
+
+TMPDIR ?= $(or $(EXTERNALS_CACHE_DIR),$(wildcard /tmp),.)
 
 $(TMPDIR)/pjproject-$(PJPROJECT_VERSION).tar.bz2 : ../versions.mak
-	$(ECHO_PREFIX) Downloading $@ with $(DOWNLOAD)
-	$(CMD_PREFIX) $(DOWNLOAD) $(PJPROJECT_URL)/$(@F) > $@
+	$(ECHO_PREFIX) Downloading $(PJPROJECT_URL)/$(@F) to $@
+	$(CMD_PREFIX) $(DOWNLOAD_TO_STDOUT) $(PJPROJECT_URL)/$(@F) > $@
 
 source/.unpacked: $(TMPDIR)/pjproject-$(PJPROJECT_VERSION).tar.bz2
 	$(ECHO_PREFIX) Unpacking $<
 	-@rm -rf source >/dev/null 2>&1
 	-@mkdir source >/dev/null 2>&1
-	$(CMD_PREFIX) tar --strip-components=1 -C source -xjf $<
+	$(CMD_PREFIX) $(TAR) --strip-components=1 -C source -xjf $<
 	$(ECHO_PREFIX) Applying patches
 	$(CMD_PREFIX) ./apply_patches $(QUIET_CONFIGURE) ./patches ./source
 	-@touch source/.unpacked
@@ -99,8 +99,8 @@ source/pjlib/include/pj/%.h : ./patches/%.h
 
 build.mak: source/.unpacked $(addprefix source/pjlib/include/pj/,$(notdir $(wildcard ./patches/*.h))) source/user.mak Makefile.rules
 	$(ECHO_PREFIX) Configuring with $(PJPROJECT_CONFIG_OPTS)
-	$(CMD_PREFIX) (cd source ; autoconf aconfigure.ac > aconfigure && ./aconfigure $(QUIET_CONFIGURE) $(PJPROJECT_CONFIG_OPTS))
-	@sed -r -e "/prefix|export PJ_SHARED_LIBRARIES|MACHINE_NAME|OS_NAME|HOST_NAME|CC_NAME|CROSS_COMPILE|LINUX_POLL/d" source/build.mak > build.mak
+	$(CMD_PREFIX) (cd source ; ./aconfigure $(QUIET_CONFIGURE) $(PJPROJECT_CONFIG_OPTS))
+	$(SED) -r -e "/prefix|export PJ_SHARED_LIBRARIES|MACHINE_NAME|OS_NAME|HOST_NAME|CC_NAME|CROSS_COMPILE|LINUX_POLL/d" source/build.mak > build.mak
 
 configure: build.mak
 
@@ -128,7 +128,7 @@ $(LIB_FILES): $(PJLIB_UTIL_LIB_FILES)
 
 pjproject.symbols: $(ALL_LIB_FILES)
 	$(ECHO_PREFIX) Generating symbols
-	$(CMD_PREFIX) nm -Pog $(ALL_LIB_FILES) | sed -n -r -e "s/.+: ([pP][jJ][^ ]+) .+/\1/gp" | sort -u > pjproject.symbols
+	$(CMD_PREFIX) $(NM) -Pog $(PJ_LIB_FILES) | $(SED) -n -r -e "s/.+: ([pP][jJ][^ ]+) .+/\1/gp" | sort -u > pjproject.symbols
 
 source/pjsip-apps/src/asterisk_malloc_debug.c: patches/asterisk_malloc_debug.c
 	$(ECHO_PREFIX) Copying $< to $@
@@ -155,8 +155,6 @@ source/pjsip-apps/src/python/_pjsua.so: source/pjsip-apps/src/python/_pjsua.o
 	$(ECHO_PREFIX) Linking python bindings $(@F)
 	$(CMD_PREFIX) gcc -shared -pthread -o $@ $< $(LDFLAGS) $(PJ_LDFLAGS) $(APP_LDLIBS) $(PYTHONDEV_LIB) $(REALLY_QUIET)
 
-_all: $(TARGETS)
-
 _install: _all
 	@if [ ! -d "$(DESTDIR)$(ASTDATADIR)/third-party/pjproject" ]; then \
 		$(INSTALL) -d "$(DESTDIR)$(ASTDATADIR)/third-party/pjproject"; \
@@ -188,4 +186,3 @@ clean:
 distclean:
 	$(ECHO_PREFIX) Distcleaning
 	-$(CMD_PREFIX) rm -rf source pjproject.symbols pjproject-*.tar.bz2 build.mak .rebuild_needed
-