Makefile fixups

Fixes a few goofs left over from 6f51ba0. Namely, the missing
'generated' directory, and some targets that are no longer needed.

Makefile

@@ -9,7 +9,7 @@ BINDIR=bin
 
 all: $(BINDIR)/$(BIN)
 
-SRCS=$(shell find src/lib src/driver src/common generated/ -name '*.c') generated/gitsha1.c
+SRCS=$(shell find src/lib src/driver src/common -name '*.c') generated/gitsha1.c
 OBJS=$(SRCS:%.c=$(BINDIR)/%.o)
 DEPS=$(OBJS:%.o=%.d)
 

cosmo.mk

@@ -9,7 +9,7 @@ $(OBJDIR_cosmo)/%.o: %.c $(OBJDIR_cosmo)
 	@mkdir -p '$(@D)'
 	@echo "cosmocc $<"
 	@$(CC_cosmo) $(CFLAGS) -c $< -o $@
-$(OBJDIR_cosmo): dummy
+$(OBJDIR_cosmo):
 	mkdir -p $@
 $(BIN_cosmo): $(OBJS_cosmo) $(OBJDIR_cosmo)
 	@echo "LD $@"

lib.mk

@@ -5,7 +5,7 @@ LIB=lib/libc-ray.so
 BIN_lib=lib/c-ray
 OBJDIR_lib=lib/obj_lib
 OBJDIR_driver=lib/obj_driver
-SRCS_lib=$(shell find src/lib src/common generated/ -name '*.c')
+SRCS_lib=$(shell find src/lib src/common -name '*.c') generated/gitsha1.c
 OBJS_lib=$(patsubst %.c, $(OBJDIR_lib)/%.o, $(SRCS_lib))
 SRCS_driver=$(shell find src/driver src/common -name '*.c')
 OBJS_driver=$(patsubst %.c, $(OBJDIR_driver)/%.o, $(SRCS_driver))
@@ -45,7 +45,7 @@ $(OBJDIR_lib)/%.o: %.c $(OBJDIR_lib)
 	@mkdir -p '$(@D)'
 	@echo "CC -fPIC $<"
 	@$(CC) -DCR_BUILDING_LIB $(CFLAGS) -fvisibility=hidden -c -fPIC $< -o $@
-$(OBJDIR_lib): dummy
+$(OBJDIR_lib):
 	mkdir -p $@
 $(OBJDIR_driver):
 	mkdir -p $@

tests/test.mk

@@ -1,6 +1,6 @@
 BIN_test=tests/testrunner
 OBJDIR_test=tests/obj
-SRCS_test=$(shell find src/lib src/driver src/common generated/ tests/ -name '*.c' -not -name 'main.c')
+SRCS_test=$(shell find src/lib src/driver src/common tests/ -name '*.c' -not -name 'main.c')
 TEST_HDRS=$(shell find tests/ -name '*.h')
 OBJS_test=$(patsubst %.c, $(OBJDIR_test)/%.o, $(SRCS_test))
 # suite=vector