new framework for building sources after gitlab migration

1 files changed, 90 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 00000000..0e51f79d
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,90 @@
+.POSIX:
+
+default: all
+
+#STANDARD=POSIX.1-1990
+STANDARD=9899-1990
+STDDIR=std/$(STANDARD)
+CC=c89
+
+CFLAGS=-g -fno-builtin -nostdinc -nostdlib -nodefaultlibs -Werror -Wall -Wextra -Wno-missing-field-initializers -fPIC -Iinclude -I. -Inonstd/stubs
+
+all: include .dep/$(STANDARD).mk
+	mkdir -p obj
+	$(MAKE) -f .dep/$(STANDARD).mk
+
+include: .dep/$(STANDARD)
+	sed -e 's#std/.[^/]*/##' -e 's#/.[^/]*$$##' .dep/$(STANDARD) | grep -v '.c$$' | sort -u > .dep/headers
+	for i in $$(cat .dep/headers); do $(MAKE) HEADER=$$i $$i; done
+	rm .dep/headers
+
+$(HEADER): include/$(HEADER).h
+
+## special case for assert.h, as it is *not* idempotent
+include/assert.h: std/9899-1990/assert/assert.c
+	head -n19 std/9899-1990/assert/assert.c | tail +3 > $@
+
+include/$(HEADER).h: .dep/$(STANDARD).defs .dep/$(STANDARD).types .dep/$(STANDARD).structs .dep/$(STANDARD).vars .dep/$(STANDARD).funcs
+	mkdir -p $$(dirname $@)
+	printf '#ifndef __%s_H__\n#define __%s_H__\n\n' "$$(echo $(HEADER) | tr a-z/ A-Z_)" "$$(echo $(HEADER) | tr a-z/ A-Z_)" > $@
+	printf '/* backwards compatibility */\n' >> $@
+	printf '#if !defined (__STDC_VERSION__) || (__STDC_VERSION__ < 199009L)\n' >> $@
+	printf '#define restrict\n' >> $@
+	printf '#endif\n' >> $@
+	printf '\n/* macros */\n' >> $@
+	for i in $$(grep '^std/.[^/]*/$(HEADER)/' .dep/$(STANDARD).defs); do sh nonstd/addefs $$i $@; done
+	printf '\n/* types */\n' >> $@
+	for i in $$(grep '^std/.[^/]*/$(HEADER)/' .dep/$(STANDARD).types); do sh nonstd/addefs $$i $@; done
+	printf '\n/* structs */\n' >> $@
+	for i in $$(grep '^std/.[^/]*/$(HEADER)/' .dep/$(STANDARD).structs); do sh nonstd/addefs $$i $@; done
+	printf '\n/* variables */\n' >> $@
+	for i in $$(grep '^std/.[^/]*/$(HEADER)/' .dep/$(STANDARD).vars); do sh nonstd/addefs $$i $@; done
+	printf '\n/* functions */\n' >> $@
+	for i in $$(grep '^std/.[^/]*/$(HEADER)/' .dep/$(STANDARD).funcs); do sh nonstd/addefs $$i $@; done
+	printf '\n#endif\n' >> $@
+
+.dep/$(STANDARD).defs: .dep/$(STANDARD)
+	grep -El '^#(un|)define' $$(cat .dep/$(STANDARD)) > $@
+
+.dep/$(STANDARD).types: .dep/$(STANDARD) .dep/$(STANDARD).defs
+	grep -El '^typedef.*$$' $$(grep -v -f .dep/$(STANDARD).defs .dep/$(STANDARD)) > $@
+
+.dep/$(STANDARD).structs: .dep/$(STANDARD) .dep/$(STANDARD).defs .dep/$(STANDARD).types
+	grep -El '^(struct|union).*{' $$(grep -v -f .dep/$(STANDARD).defs -f .dep/$(STANDARD).types .dep/$(STANDARD)) > $@
+
+.dep/$(STANDARD).vars: .dep/$(STANDARD) .dep/$(STANDARD).defs .dep/$(STANDARD).types .dep/$(STANDARD).structs
+	grep -El '^[a-zA-Z_].*;$$' $$(grep -v -f .dep/$(STANDARD).defs -f .dep/$(STANDARD).types -f .dep/$(STANDARD).structs .dep/$(STANDARD)) > $@
+
+.dep/$(STANDARD).funcs: .dep/$(STANDARD) .dep/$(STANDARD).defs .dep/$(STANDARD).types .dep/$(STANDARD).structs .dep/$(STANDARD).vars
+	grep -El '^[a-zA-Z_].*\)$$' $$(grep -v -f .dep/$(STANDARD).defs -f .dep/$(STANDARD).types -f .dep/$(STANDARD).structs -f .dep/$(STANDARD).vars .dep/$(STANDARD)) > $@
+
+
+.dep/$(STANDARD):
+	-for i in $$(cat $(STDDIR)/INCLUDE); do $(MAKE) STANDARD=$$i .dep/$$i; done
+	mkdir -p .dep
+	-cat .dep/* > $@
+	find $(STDDIR) -name \*.ref >> $@.refs
+	for i in $$(cat $@.refs); do ln -sf $$(grep ^REF $$i | m4 -DREFERENCE=$$(pwd)/std/'$$1') $$(dirname $$i)/$$(basename $$i .ref).c; done
+	find $(STDDIR) -name \*.c >> $@
+	mv $@ $@.tmp
+	sort -u $@.tmp > $@
+	rm $@.tmp
+
+
+
+deps: .dep/$(STANDARD).mk
+
+.dep/$(STANDARD).mk: .dep/$(STANDARD).vars .dep/$(STANDARD).funcs
+	mkdir -p $$(dirname $@)
+	printf 'CC=$(CC)\n' > $@
+	printf 'CFLAGS=$(CFLAGS)\n' >> $@
+	printf 'all: \\\n' >> $@
+	for i in $$(cat .dep/$(STANDARD).vars .dep/$(STANDARD).funcs); do if [ -f $$i ]; then printf '\tobj/%s.o \\\n' "$$(basename $$i .c)" >> $@; fi; done
+	printf '\n' >> $@
+	for i in $$(cat .dep/$(STANDARD).vars .dep/$(STANDARD).funcs); do if [ -f $$i ]; then printf 'obj/%s.o: %s\n\t$$(CC) $$(CFLAGS) -c %s -o $$@\n\n' "$$(basename $$i .c)" "$$i" "$$i" >> $@; fi; done
+
+clean:
+	rm -rf obj
+
+git-clean:
+	rm -rf include .dep