deps: add Makefile to generate opensslconf.h

This Makefile executes ../openssl/Configure {target} and copy
generated `../openssl/crypto/opensslconf.h` into
`archs/{target}/opensslconf.h`. with the target list that is defined
in ARCS. Several files are copied for backup and cleared so as not to
change the files in `../openssl`.

This also applies four fixes as below by using perl script so as to
meet iojs build requirements.

- all architectures
Remove define of OPENSSL_CPUID_OBJ because it is defined in
openssl.gypi so as to avoid build error with --openssl-no-asm

- VC-WIN32 and VC-WIN64A
OPENSSL_NO_DYNAMIC_ENGINE is needed for building static
library. OPENSSL_NO_CAPIENG is needed to avoid build errors on
Win. See the comments in `deps/openssl/openssl/engines/e_capi.c` for
detail.

- linux-x32
This fix was made by comparing define values of opensslconf.h which
was generated `Configure linux-x32' in openssl-1.0.2a

- darwin64-x86_64-cc
The current openssl release does not use RC4 asm since it explicitly
specified as `$asm=~s/rc4\-[^:]+//;` in
https://github.com/openssl/openssl/blob/OpenSSL_1_0_1-stable/Configure#L584
But iojs has used RC4 asm on MacOS for long time. Fix type of RC4_INT
into `unsigned int` in opensslconf.h of darwin64-x86_64-cc to work on
the RC4 asm.

PR-URL: #1377
Reviewed-By: Fedor Indutny <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>

deps/openssl/config/Makefile

@@ -0,0 +1,86 @@
+PERL    = perl
+CONFIGURE = ./Configure
+COPT = no-shared no-symlinks
+
+ARCHS = BSD-x86 BSD-x86_64 VC-WIN32 VC-WIN64A darwin64-x86_64-cc  \
+darwin-i386-cc linux-armv4 linux-elf linux-x86_64 solaris-x86-gcc \
+solaris64-x86_64-gcc
+
+CFG = opensslconf.h
+SRC_CFG = ../openssl/crypto/$(CFG)
+BACKUP_FILES = ../openssl/Makefile ../openssl/Makefile.bak $(SRC_CFG)
+BACKUP_EXT = iojsbackup
+
+# OPENSSL_CPUID_OBJ is defined in openssl.gypi for use --openssl-no-asm
+CPUIDFIX = 's/\#define OPENSSL_CPUID_OBJ$$//;'
+
+X32FIX = 's/\#define OPENSSL_CPUID_OBJ$$//;\
+s/RC4_CHUNK unsigned long$$/RC4_CHUNK unsigned long long/;\
+s/define SIXTY_FOUR_BIT_LONG$$/undef SIXTY_FOUR_BIT_LONG/;\
+s/undef SIXTY_FOUR_BIT$$/define SIXTY_FOUR_BIT/;'
+
+MACFIX ='s/define RC4_INT unsigned char$$/define RC4_INT unsigned int/;'
+
+WINFIX = 'if(/ifndef OPENSSL_DOING_MAKEDEPEND$$/){\
+print "\n\#ifndef OPENSSL_NO_DYNAMIC_ENGINE\n";\
+print "\# define OPENSSL_NO_DYNAMIC_ENGINE\n";\
+print "\#endif\n";\
+print "\#ifndef OPENSSL_NO_CAPIENG\n";\
+print "\# define OPENSSL_NO_CAPIENG\n";\
+print "\#endif\n\n";}'
+
+PHONY = all clean backup restore
+.PHONY: $(PHONY)
+
+all: backup $(ARCHS) linux-x32 cleanconf fixdarwin64 fixwin restore
+
+$(ARCHS):
+	cd ../openssl; $(PERL) $(CONFIGURE) $(COPT) $@ > /dev/null
+	$(PERL) -p -e $(CPUIDFIX) $(SRC_CFG) > ./archs/$@/$(CFG)
+
+# linux-x32 was made by comparing define values of opensslconf.h which
+# was generated `Configure linux-x32' in openssl-1.0.2a
+linux-x32:
+	cd ../openssl; $(PERL) $(CONFIGURE) $(COPT) linux-x86_64 > /dev/null;
+	$(PERL) -p -e $(X32FIX) $(SRC_CFG) > ./archs/$@/$(CFG)
+
+# The current openssl release does not use RC4 asm since it explicitly
+# specified as `$asm=~s/rc4\-[^:]+//;` in
+# https://github.com/openssl/openssl/blob/OpenSSL_1_0_1-stable/Configure#L584
+# But iojs has used RC4 asm on MacOS for long time. Fix type of RC4_INT
+# into `unsigned int` in opensslconf.h of darwin64-x86_64-cc to work on
+# the RC4 asm.
+fixdarwin64:
+	$(PERL) -pi -e $(MACFIX) ./archs/darwin64-x86_64-cc/$(CFG)
+
+
+# OPENSSL_NO_DYNAMIC_ENGINE is needed for building static
+# library. OPENSSL_NO_CAPIENG is needed to avoid build errors on
+# Win. See the comments in `deps/openssl/openssl/engines/e_capi.c` for
+# detail.
+fixwin:
+	$(PERL) -pi -e $(WINFIX) ./archs/VC-WIN32/$(CFG) ./archs/VC-WIN64A/$(CFG)
+
+# backup files to avoid to be overwritten
+backup:
+	@for f in $(BACKUP_FILES); do \
+	    mv $$f $$f.$(BACKUP_EXT); \
+	done
+
+restore:
+	@for f in $(BACKUP_FILES); do \
+	    mv $$f.$(BACKUP_EXT) $$f ; \
+	done
+
+# remove unnecessary files create by Configure
+cleanconf:
+	@rm ../openssl/crypto/$(CFG)
+	@rm ../openssl/Makefile
+	@rm ../openssl/apps/CA.pl.bak
+	@rm ../openssl/crypto/buildinf.h
+	@rm ../openssl/crypto/$(CFG).bak
+	@rm ../openssl/ms/version32.rc
+	@rm ../openssl/tools/c_rehash.bak
+
+clean:
+	find archs -name $(CFG) -exec rm "{}" \;