SSL: avoid using OpenSSL config in build directory (ticket #2404). With this change, the NGX_OPENSSL_NO_CONFIG macro is defined when nginx is asked to build OpenSSL itself. And with this macro automatic loading of OpenSSL configuration (from the build directory) is prevented unless the OPENSSL_CONF environment variable is explicitly set. Note that not loading configuration is broken in OpenSSL 1.1.1 and 1.1.1a (fixed in OpenSSL 1.1.1b, see https://github.com/openssl/openssl/issues/7350). If nginx is used to compile these OpenSSL versions, configuring nginx with NGX_OPENSSL_NO_CONFIG explicitly set to 0 might be used as a workaround.

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


all:
	cd $(OPENSSL)

	perl Configure BC-32 no-shared --prefix=openssl $(OPENSSL_OPT)

	ms\do_nasm

	$(MAKE) -f ms\bcb.mak
	$(MAKE) -f ms\bcb.mak install

	# Borland's make does not expand "[ch]" in
	#    copy "inc32\openssl\*.[ch]" "openssl\include\openssl"
	copy inc32\openssl\*.h openssl\include\openssl