adding missing file - oops

builds/exports.mk

@@ -0,0 +1,53 @@
+# this sub-Makefile is used to compute the list of exported symbols whenever
+# the EXPORTS_LIST variable is defined by one of the platform or compiler
+# specific build files
+#
+# EXPORTS_LIST contains the name of the "list" file, which can be a Windows
+# .DEF file by the way
+#
+ifneq ($(EXPORTS_LIST),)
+
+  # CCexe is the compiler used to compile the "apinames" tool program
+  # on the host machine. This isn't necessarily the same than the compiler
+  # which can be a cross-compiler for a different architecture
+  #
+  ifeq ($(CCexe),)
+    CCexe := $(CC)
+  endif
+
+  # TE acts as T, but for executables instead of object files
+  ifeq ($(TE),)
+    TE := $T
+  endif
+
+  # the list of public headers we're going to parse
+  PUBLIC_HEADERS := $(wildcard $(PUBLIC_DIR)/*.h)
+
+  # the "apinames" source and executable. We use E as the executable
+  # suffix, which *includes* the final dot
+  # note that $(APINAMES_OPTIONS) is empty, except for Windows compilers
+  #
+  APINAMES_SRC := $(TOP_DIR)/src/tools/apinames.c
+  APINAMES_EXE := $(OBJ_DIR)/apinames$E
+
+  $(APINAMES_EXE): $(APINAMES_SRC)
+	$(CCexe) $(TE)$@ $<
+
+  .PHONY: symbols_list  clean_symbols_list  clean_apinames
+
+  symbols_list: $(EXPORTS_LIST)
+
+  $(EXPORTS_LIST): $(APINAMES_EXE) $(PUBLIC_HEADERS)
+	$(subst /,$(SEP),$(APINAMES_EXE)) -o$@ $(APINAMES_OPTIONS) $(PUBLIC_HEADERS)
+
+  $(PROJECT_LIBRARY): $(EXPORTS_LIST)
+
+  clean_symbols_list:
+	-$(DELETE) $(subst /,$(SEP),$(EXPORTS_LIST))
+
+  clean_apinames:
+	-$(DELETE) $(subst /,$(SEP),$(APINAMES_EXE))
+
+  clean_project: clean_symbols_list clean_apinames
+
+endif