Re: Minimal libcurl compile for windows

That is interesting, I'll try the nmake command with additional flags today.

But for what it's worth, I've managed to bring down the unresolved
externals just to 1.

libcurl.a(strerror.o) : error LNK2019: unresolved external symbol
__imp__sys_nerr referenced in function Curl_strerror

The others have been fixed by adding:
#pragma comment (lib, "legacy_stdio_definitions.lib")
#pragma comment (lib, "lib/libgcc.a")

and I followed this little guide:
https://gmplib.org/list-archives/gmp-discuss/2006-July/002415.html

I just used grep for the symbol that was missing for me.
Therefore I found that I need libgcc.a and moved it into the lib directory
for my project.

Unfortunately I can't find any related files for "strerror.o" or
"__imp__sys_nerr"

Do you have an idea if there are any flags I could use, which I already
haven't, that would disable this functionality,
or perhaps if there is another way to remove the last error?

On Thu, May 7, 2020 at 4:09 AM Ray Satiro via curl-library <
curl-library_at_cool.haxx.se> wrote:

> On 5/6/2020 3:25 PM, Testing WunTuTri via curl-library wrote:
>
> I did this
>
> Compiling the static lib on windows with nmake yields libcurl_a.lib and a
> bunch of obj files,
>
> libcurl_a.lib needs to be in the folder with the obj files in order for my
> program to compile without unresolved externals.
>
> Which is GREAT! But,
>
> I can't seem to disable certain curl features using nmake, the same way I
> can do with
> ./configure && make && make install
>
> ./configure --disable-ares --disable-cookies --disable-crypto-auth
> --disable-ipv6 --disable-manual --disable-proxy --disable-verbose
> --disable-versioned-symbols --enable-hidden-symbols --without-libidn
> --without-librtmp --without-ssl --without-zlib --disable-dict
> --disable-file --disable-ftp --disable-gopher --disable-imap --disable-ldap
> --disable-ldaps --disable-pop3 --disable-rtsp --disable-smtp
> --disable-telnet --disable-tftp --disable-pthread --prefix=/curl
>
> This is the configure command I use on git-bash sdk on the same windows VM
> where I used nmake. Everything compiles without erros except the fact that
> all I get is the libcurl.a library instead of libcurl_a.lib.
>
> Using it in my program (x64/windows; http-get request to read string from
> given host)
>
> `
> #include "curl/curl.h"
>
> #pragma comment (lib, "crypt32.lib")
>
> #pragma comment (lib, "advapi32")
>
> #pragma comment (lib, "ws2_32.lib")
>
> #pragma comment (lib, "wldap32.lib")
>
> #pragma comment (lib, "normaliz.lib")
>
> #pragma comment (lib, "libcurl/libcurl.a")
> `
>
> gives me 6 unresolved externals.
>
> https://pastebin.com/raw/fFPVHZGR
>
>
> I tried linking all the .o files to libcurl.a when compiling, with no luck.
> I expected the following
>
> make install to produce the libcurl_a.lib file
> curl/libcurl version
>
> 7.70.0
>
> I have been looking everywhere and I've spend nearly 10 hours today trying
> to get this sorted, what am I possibly doing wrong?
>
>
> If you are not building the library with the Microsoft compiler, as you
> would with winbuild and nmake, then you end up with an .a file. It looks as
> though you are attempting to build your application using the Microsoft
> compiler and linking to that .a file. AFAIK that is not guaranteed to work.
> Likely the errors you are seeing is a result of CRT mismatch. MinGW is
> using one CRT and Visual Studio or whatever expects another. Even if you
> use the same CRT I don't think it is supported to mix static libraries that
> way, but I'm not certain. My advice pick one compiler or the other.
>
> If you need to use MS compiler to build your app and need static
> libcurl.lib and want to disable features with the winbuild method, you
> could probably do that by finding the defines and specifying them on the
> command line.
>
> nmake /E CC="cl /DCURL_DISABLE_COOKIES /DCURL_DISABLE_DICT
> /DCURL_DISABLE_FILE /DCURL_DISABLE_FTP /DCURL_DISABLE_LDAP
> /DCURL_DISABLE_LDAPS /DCURL_DISABLE_TELNET /DCURL_DISABLE_TFTP "
>
> and so on
>
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Received on 2020-05-07