Solaris 9 (released 2002) added support for closefrom(). I bumped the version in the comment to 10 as the default feature flags already has event ports enabled which were introduced in Solaris 10.
diff --git a/Makefile b/Makefile index 197126db5..e7d716dd3 100644 --- a/Makefile +++ b/Makefile @@ -353,12 +353,11 @@ ifneq ($(shell echo __arm__/__aarch64__ | $(CC) -E -xc - | grep '^[^\#]'),__arm_ endif endif -# Solaris 8 and above +# Solaris 10 and above ifeq ($(TARGET),solaris) - # We also enable getaddrinfo() which works since solaris 8. set_target_defaults = $(call default_opts, \ USE_POLL USE_TPROXY USE_LIBCRYPT USE_CRYPT_H USE_GETADDRINFO USE_THREAD \ - USE_RT USE_OBSOLETE_LINKER USE_EVPORTS) + USE_RT USE_OBSOLETE_LINKER USE_EVPORTS USE_CLOSEFROM) TARGET_CFLAGS = -DFD_SETSIZE=65536 -D_REENTRANT -D_XOPEN_SOURCE=500 -D__EXTENSIONS__ TARGET_LDFLAGS = -lnsl -lsocket endif