Remove old version before build - and starting compile

from openssl.

not sure what you mean by "Remove old version before build" as I also got this kind of error...
I've just downloaded openssl-1.0.2.tar.gz and tried to build it, so there shouldn't be any "old version".
Also, my make output looks a bit differently...

g++    -c -o cryptlib.o cryptlib.c
In file included from cryptlib.c:117:0:
cryptlib.h:65:19: fatal error: e_os.h: No such file or directory
 # include "e_os.h"
                   ^

and as you can see, it's entirely missing any options or includes...

I've tried to follow this howto: http://qt-project.org/wiki/Compiling-OpenSSL-with-MinGW
as well as INSTALL.W32 (INSTALL.W64 is outdated, I actually want to compile for x86_64 but I can do neither)

from openssl.

I confirm the issue with 1.0.2a.
I tried to compile on a clean machine...
I did mingw32-make clean and then ./Configure mingw no-idea no-mdc2 no-rc5 shared after which mingw32-make depend.

`cryptlib.c:170:3: error: #error "Inconsistency between crypto.h and cryptlib.c"

error "Inconsistency between crypto.h and cryptlib.c"

^
uid.c:77:11: error: #include expects "FILENAME" or

include OPENSSL_UNISTD`

from openssl.

The problem is in implicit make rules.

I don't know why gnumake decided to use g++ instead of gcc but by the same reason it does not use declared CFLAGS what leads to the lost e_os.h header.
It seems there are no way o force gcc but explicit make rule. So in my case I've added next code to crypto/Makefile

%.o:    %.c
    $(CC) $(CFLAGS) -c -o $@ $<

and it compiled a little more.

Unfortunately all other makefiles do not have such explicit rule too.

from openssl.

Hey !
With MSYS2 it's work !
Maybe you can try this simple script to build openssl : easy-openssl-build-example.sh

from openssl.