BUILD: makefile: pass USE_ENGINE to cflags
Previous patch forgot to add USE_ENGINE to the list of options to be
transferred to CFLAGS, so USE_ENGINE had no effect and engines would
remain disabled.
diff --git a/Makefile b/Makefile
index 726f28f..fc0ae67 100644
--- a/Makefile
+++ b/Makefile
@@ -335,7 +335,7 @@
USE_PCRE USE_PCRE_JIT USE_PCRE2 USE_PCRE2_JIT USE_POLL \
USE_THREAD USE_BACKTRACE \
USE_STATIC_PCRE USE_STATIC_PCRE2 USE_TPROXY USE_LINUX_TPROXY \
- USE_LINUX_SPLICE USE_LIBCRYPT USE_CRYPT_H \
+ USE_LINUX_SPLICE USE_LIBCRYPT USE_CRYPT_H USE_ENGINE \
USE_GETADDRINFO USE_OPENSSL USE_LUA USE_ACCEPT4 \
USE_CLOSEFROM USE_ZLIB USE_SLZ USE_CPU_AFFINITY USE_TFO USE_NS \
USE_DL USE_RT USE_DEVICEATLAS USE_51DEGREES USE_WURFL USE_SYSTEMD \