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michael |
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# Makefile rules for modules. |
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# |
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# IRC Services is copyright (c) 1996-2009 Andrew Church. |
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# E-mail: <achurch@achurch.org> |
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# Parts written by Andrew Kempe and others. |
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# This program is free but copyrighted software; see the file GPL.txt for |
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# details. |
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########################################################################### |
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# The following variables must be set by the caller (the Makefile which |
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# includes this file). See operserv/Makefile for examples of using all the |
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# variables listed below. |
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# |
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# MODULES List of modules, each with the extension ".so". Each |
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# module is compiled from a source file of the same name |
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# name ending in ".c" which must contain the required |
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# module symbol definitions (init_module, etc.), and |
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# possibly other files as defined by the appropriate |
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# OBJECTS variable. |
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# OBJECTS-... List of additional objects for a particular module. The |
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# "..." is replaced by the name of the module; for |
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# example, if the module name is "main.so", the OBJECTS |
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# variable name is "OBJECTS-main.so". |
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# INCLUDES List of include files every source file in the directory |
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# depends on. |
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# INCLUDES-... List of include files a particular source file depends on. |
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# The "..." is replaced by the _object_ file name of the |
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# source file; for example, if the filename is "main.c", |
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# then the INCLUDES variable name is "INCLUDES-main.o". |
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# |
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# The following variables are set by this file: |
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# |
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# DIRNAME Name of this directory (set by modules/Makefile). |
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# TOPDIR Top Services directory. |
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# DEPS Files which every source file should depend on. |
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# This makefile is complex because there's no way to say something like |
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# "%.so: %.o $(OBJECTS-%)". Instead, we recursively call ourselves for |
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# each module, settings OBJECTS to the appropriate target-dependent value. |
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# We then recursively call ourselves _again_ for each source file, defining |
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# INCLUDES to the appropriate value. |
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########################################################################### |
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TOPDIR=../.. |
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DEPS = Makefile ../Makerules $(TOPDIR)/Makefile.inc $(TOPDIR)/Makefile \ |
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$(TOPDIR)/services.h $(TOPDIR)/modules.h $(TOPDIR)/conffile.h \ |
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$(INCLUDES) |
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.PHONY: all-dynamic all-static install clean spotless |
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all-dynamic: $(MODULES) |
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all-static: $(MODULES:.so=.a) |
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@set -e ; \ |
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if $(TEST_NT) ! -f $(DIRNAME).o -o .stamp -nt $(DIRNAME).o ; then \ |
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rm -f .$(DIRNAME).lst2 ; \ |
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sort -u .$(DIRNAME).lst >.$(DIRNAME).lst2 ; \ |
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mv -f .$(DIRNAME).lst2 .$(DIRNAME).lst ; \ |
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echo 'ld -r -o $(DIRNAME).o' `cat .$(DIRNAME).lst` ; \ |
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ld -r -o $(DIRNAME).o `cat .$(DIRNAME).lst` ; \ |
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echo 'ar -cr ../modules.a $(DIRNAME).o' ; \ |
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ar -cr ../modules.a $(DIRNAME).o ; \ |
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echo 'touch .stamp' ; \ |
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touch .stamp ; \ |
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fi |
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ifeq ($(MODULES),) |
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install: |
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$(MKDIR) "$(INSTALL_PREFIX)$(DATDEST)/modules/$(DIRNAME)" |
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clean: |
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else |
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install: |
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$(MKDIR) "$(INSTALL_PREFIX)$(DATDEST)/modules/$(DIRNAME)" |
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$(INSTALL_DAT) $(MODULES) "$(INSTALL_PREFIX)$(DATDEST)/modules/$(DIRNAME)" |
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clean: |
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rm -f $(MODULES) $(MODULES:.so=.a) .$(DIRNAME).lst* *.o .mod* .compiled* |
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endif |
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spotless: clean |
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########################################################################### |
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.PHONY: FRC |
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FRC: |
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ifeq ($(REALLY_COMPILE),) |
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%_static.so %_static.a: |
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@echo >&2 '*** Module names must not end in "_static". Compile aborted.' |
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@false |
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.%.so .%.a: |
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@echo >&2 '*** Module names must not begin with ".". Compile aborted.' |
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@false |
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# We include FRC as a prerequisite here since we can't check the real |
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# prerequisites until the sub-make, which won't get executed if the target |
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# exists and there are no prerequisites listed. |
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%.so: FRC |
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@$(MAKE) --no-print-directory $@ TARGET=$(@:.so=) OBJECTS="$(OBJECTS-$@)" REALLY_COMPILE=1 |
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%.a: FRC |
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@$(MAKE) --no-print-directory $@ TARGET=$(@:.a=) OBJECTS="$(OBJECTS-$(@:.a=.so))" REALLY_COMPILE=1 |
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else |
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# Compile one or more objects into a dynamic module. |
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$(TARGET).so: $(TARGET).o $(OBJECTS) |
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$(CC_SHARED) $^ -o $@ |
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# Compile one or more objects into a static module and generate a symbol |
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# list. The .a file we create here is just a placeholder to show that |
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# we've compiled the module; the objects themselves go into ../modules.a |
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# (via $(DIRNAME).o). |
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$(TARGET).a: $(TARGET)_static.o $(OBJECTS) |
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@for i in $^ ; do echo $$i >>.$(DIRNAME).lst ; done |
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@set -e ; \ |
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FILENAME=$(@:.a=) ; \ |
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MODNAME=`echo $(DIRNAME)_$$FILENAME | sed -e 'y/-/_/' -e 's/_$$//'` ; \ |
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rm -f .modext-$$FILENAME.h .modlist-$$FILENAME.c .modsyms-$$FILENAME.c ; \ |
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echo >>.modext-$$FILENAME.h 'extern void *_this_module_ptr_'$$MODNAME';' ; \ |
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echo >>.modext-$$FILENAME.h 'extern uint32 module_version_'$$MODNAME';' ; \ |
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echo >>.modext-$$FILENAME.h 'extern char module_config_'$$MODNAME'[];' ; \ |
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echo >>.modext-$$FILENAME.h 'extern int init_module_'$$MODNAME'();' ; \ |
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echo >>.modext-$$FILENAME.h 'extern int exit_module_'$$MODNAME'();' ; \ |
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echo >>.modlist-$$FILENAME.c '{ "$(DIRNAME)/'$$FILENAME'", modsyms_'$$MODNAME' },' ; \ |
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echo >>.modsyms-$$FILENAME.c 'struct {const char *name; void *value; } modsyms_'$$MODNAME'[] = {' ; \ |
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echo >>.modsyms-$$FILENAME.c '{"_this_module_ptr",&_this_module_ptr_'$$MODNAME'},' ; \ |
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echo >>.modsyms-$$FILENAME.c '{"module_version",&module_version_'$$MODNAME'},' ; \ |
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echo >>.modsyms-$$FILENAME.c '{"module_config",module_config_'$$MODNAME'},' ; \ |
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echo >>.modsyms-$$FILENAME.c '{"init_module",init_module_'$$MODNAME'},' ; \ |
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echo >>.modsyms-$$FILENAME.c '{"exit_module",exit_module_'$$MODNAME'},' ; \ |
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rm -f .modsyms-$$FILENAME.tmp ; \ |
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for file in $(@:.a=.c) $(OBJECTS-$(@:.a=.so):.o=.c) ; do \ |
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grep '^EXPORT_' $$file \ |
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| sed -e 's/^EXPORT_VAR[ ]*([ ]*\([^,]*\),[ ]*\([A-Za-z0-9_]*\)[ ]*)[ ]*$$/\&\2:\1 \2/' \ |
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-e 's/^EXPORT_ARRAY[ ]*([ ]*\([A-Za-z0-9_]*\)[ ]*)[ ]*$$/ \1:char \1[]/' \ |
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-e 's/^EXPORT_FUNC[ ]*([ ]*\([A-Za-z0-9_]*\)[ ]*)[ ]*$$/ \1:void \1()/' ; \ |
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done >.modsyms-$$FILENAME.tmp ; \ |
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if grep >/dev/null 2>&1 '^EXPORT_' .modsyms-$$FILENAME.tmp ; then \ |
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echo >&2 "$$file: invalid use of EXPORT_xxx" ; \ |
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exit 1 ; \ |
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fi ; \ |
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sed 's/\(.\)\([^:]*\):.*/{"\2",\1\2},/' <.modsyms-$$FILENAME.tmp >>.modsyms-$$FILENAME.c ; \ |
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sed 's/[^:]*:\(.*\)/extern \1;/' <.modsyms-$$FILENAME.tmp >>.modext-$$FILENAME.h;\ |
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rm -f .modsyms-$$FILENAME.tmp ; \ |
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echo '{0}};' >>.modsyms-$$FILENAME.c |
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@touch $@ |
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ifneq ($(REALLY_COMPILE),2) |
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MODULE_ID = $(shell echo $(DIRNAME)_$(TARGET) | sed -e 'y/-/_/' -e 's/_$$//') |
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MODULE_CFLAGS = -DMODULE -DMODULE_ID=$(MODULE_ID) |
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$(TARGET).o $(TARGET)_static.o: MODULE_CFLAGS += -DMODULE_MAIN_FILE |
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$(TARGET)_static.o: MODULE_CFLAGS += -D_this_module_ptr=_this_module_ptr_$(MODULE_ID) -Dmodule_version=module_version_$(MODULE_ID) -Dmodule_config=module_config_$(MODULE_ID) -Dinit_module=init_module_$(MODULE_ID) -Dexit_module=exit_module_$(MODULE_ID) |
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$(TARGET)_static.o: FRC |
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@$(MAKE) --no-print-directory $@ TARGET=$(@:_static.o=) INCLUDES2="$(INCLUDES-$(@:_static.o=.o))" CFLAGS="$(CFLAGS) $(MODULE_CFLAGS)" REALLY_COMPILE=2 |
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@if $(TEST_NT) ! -f .stamp -o "$@" -nt .stamp ; then \ |
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echo "touch .stamp" ; \ |
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touch .stamp ; \ |
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fi |
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$(TARGET).o $(OBJECTS): FRC |
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@$(MAKE) --no-print-directory $@ TARGET=$(@:.o=) INCLUDES2="$(INCLUDES-$@)" CFLAGS="$(CFLAGS) $(MODULE_CFLAGS)" REALLY_COMPILE=2 |
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@if $(TEST_NT) ! -f .stamp -o "$@" -nt .stamp ; then \ |
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echo "touch .stamp" ; \ |
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touch .stamp ; \ |
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fi |
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else |
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# Compile a source file into an object file. This construct is used to |
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# suppress the "target is up to date" message that would otherwise appear. |
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$(TARGET).o: .compiled-$(TARGET).o FRC |
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@echo >/dev/null |
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.compiled-$(TARGET).o: $(TARGET).c $(DEPS) $(INCLUDES2) |
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cd $(TOPDIR) && $(CC) $(CFLAGS) -I. -c modules/$(DIRNAME)/$< -o modules/$(DIRNAME)/$(TARGET).o |
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@rm -f $@ |
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@ln -s $(TARGET).o $@ |
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# Compile a source file into an object file suitable for use in a static |
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# module. This is used with the main object file of a module to generate |
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# unique names for exported module symbols (init_module and the like). |
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$(TARGET)_static.o: .compiled-$(TARGET)_static.o FRC |
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@echo >/dev/null |
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.compiled-$(TARGET)_static.o: $(TARGET).c $(DEPS) $(INCLUDES2) |
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cd $(TOPDIR) && $(CC) $(CFLAGS) -I. -c modules/$(DIRNAME)/$< -o modules/$(DIRNAME)/$(TARGET)_static.o |
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@touch $@ |
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endif # REALLY_COMPILE == 2 |
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endif # REALLY_COMPILE != "" |
