CC=gcc
-CFLAGS = -O2 -Wall -DSVR4
-ASFLAGS = -Wall -DSVR4
+CFLAGS = -g -O2 -Wall -D__EXTENSIONS__ -D_POSIX_C_SOURCE=199506L -DSVR4
+ASFLAGS = -Wall
LD = ld
NM = nm -xgp
GREP = ggrep
GC_SRC= gencgc.c
+# Nothing to do for after-grovel-headers.
+.PHONY: after-grovel-headers
+after-grovel-headers: