main/curl: fix missing static library symbols

[j8r]

Linking to libcurl.a results of missing symbols.
There is the same problem with libssh2.a.

[brentp]

I am getting errors like "undefined reference to `nghttp2_http2_strerror'" for anything related to nghttp2 when trying to statically link to libcurl.a. Does this resolve that too? I see there is no static lib built for nghttp2 in current package, only the shared lib.

[j8r]

I'm also facing this issue. This is a first step, this doesn't solve the missing .a archive for the nghttp2 package.

[j8r]

Do we want a new curl-static, or is it fine to keep the libcurl.a archive inside curl-dev?

[CosmicToast]

@j8r this has been recently mentioned in irc.
@ncopa seems to want to have an automatic -static subpackage, likely with an install_if somewhere (ala current -openrc).

On that basis, I'd recommend making a new curl-static in the interim (I don't know if and when the automatic package will be made).

[tcely]

Do we want to remove the static function now that abuild handles this?

[CosmicToast]

This is in main/ and I don't know if this apkbuild could get backported.
If we don't expect anything of the sort, that would probably be ok.

[ncopa]

It looks like this will enforce static linking of curl itself. I don't mind that we ship a static library of curl in a subpackage, but we will not build curl static for all of our users.

[j8r]

No? I got:

ldd usr/bin/curl
        /lib/ld-musl-x86_64.so.1 (0x7f9c22c9d000)
        libssl.so.1.1 => /lib/libssl.so.1.1 (0x7f9c22b70000)
        libcrypto.so.1.1 => /lib/libcrypto.so.1.1 (0x7f9c228f2000)
        libz.so.1 => /lib/libz.so.1 (0x7f9c226db000)
        libc.musl-x86_64.so.1 => /lib/ld-musl-x86_64.so.1 (0x7f9c22c9d000)

[j8r]

After testing it again, the static linking already works by changing --with-nghttp2 to --without-nghttp2 and linking against an application.
I will rather works on a fix for nghttp2-static then.
Sorry for the annoyance.

[j8r]

I got this information curl/curl#2516 (comment).

• if you dont define NGHTTP2_STATICLIB when building libcurl, then a shared
  libcurl is built, and static libcurl is built that relies on shared nghttp2
• if you do define NGHTTP2_STATICLIB when building libcurl, then a shared
  libcurl is built that relies on static nghttp, and static libcurl is built

That's why @brentp and me have this undefined reference when trying to static link - static libcurl depends on shared nghttp2.
@ncopa I am not very sure what to do, I guess we need to compile curl twice - one with -DNGHTTP2_STATICLIB for curl-static and one without for curl-dev.