POSIX shells don't support "+=" operators. This commit replaces it with
something portable.
Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>
$(RADCLIENT_BUILDDIR)/Makefile: $(RADCLIENT_DIR)
mkdir -p $(RADCLIENT_BUILDDIR)
- cd $(RADCLIENT_BUILDDIR) && $(DEFAULT_VARS) $(RADCLIENT_DIR)/configure $(DEFAULT_ARGS) --srcdir=$(RADCLIENT_DIR)
-+ cd $(RADCLIENT_BUILDDIR) && patch -p1 < ../../src/mod/event_handlers/mod_radius_cdr/freeradius-client-1.1.6-configure-in.diff && autoreconf -v -f -i -s && $(DEFAULT_VARS) CFLAGS+="-Wno-cpp" $(RADCLIENT_DIR)/configure $(DEFAULT_ARGS) --srcdir=$(RADCLIENT_DIR)
++ cd $(RADCLIENT_BUILDDIR) && patch -p1 < ../../src/mod/event_handlers/mod_radius_cdr/freeradius-client-1.1.6-configure-in.diff && autoreconf -v -f -i -s && $(DEFAULT_VARS) CFLAGS="${CFLAGS} -Wno-cpp" $(RADCLIENT_DIR)/configure $(DEFAULT_ARGS) --srcdir=$(RADCLIENT_DIR)
$(TOUCH_TARGET)
$(RADCLIENT_LA): $(RADCLIENT_BUILDDIR)/Makefile