--- a/nspr/config/config.mk
+++ b/nspr/config/config.mk
@@ -126,6 +126,9 @@ endif
 
 ifeq ($(USE_IPV6),1)
 DEFINES += -D_PR_INET6
+ifeq ($(MUSL),1)
+CFLAGS += -D_PR_POLL_AVAILABLE -D_PR_HAVE_OFF64_T -D_PR_INET6 -D_PR_HAVE_INET_NTOP -D_PR_HAVE_GETHOSTBYNAME2 -D_PR_HAVE_GETADDRINFO -D_PR_INET6_PROBE
+endif
 endif
 
 ifeq ($(MOZ_UNICODE),1)
--- a/nspr/config/Makefile.in
+++ b/nspr/config/Makefile.in
@@ -30,7 +30,7 @@ CSRCS	= now.c
 
 # This version hasn't been ported for us; the one in mozilla/config has
 ifneq ($(OS_ARCH),OS2)
-CSRCS  += nsinstall.c
+#CSRCS  += nsinstall.c
  
 PLSRCS	= nfspwd.pl
 endif
