+libfido2 (#953)

* +libfido2

* needs zlib

* linux needs libudev

projects/developers.yubico.com/libfido2/package.yml

@@ -0,0 +1,59 @@
+distributable:
+  url: https://developers.yubico.com/libfido2/Releases/libfido2-{{ version }}.tar.gz
+  strip-components: 1
+
+versions:
+  github: Yubico/libfido2/tags
+
+dependencies:
+  github.com/PJK/libcbor: 0
+  openssl.org: 1
+  zlib.net: 1
+  linux:
+    systemd.io: '*' # libudev
+
+build:
+  dependencies:
+    tea.xyz/gx/cc: c99
+    tea.xyz/gx/make: '*'
+    cmake.org: 3
+    freedesktop.org/pkg-config: ^0.29
+  working-directory: build
+  script:
+    - cmake .. $ARGS
+    - make --jobs {{ hw.concurrency }}
+    - make install
+  env:
+    ARGS:
+      - -DCMAKE_BUILD_TYPE=Release
+      - -DCMAKE_INSTALL_PREFIX="{{prefix}}"
+
+provides:
+  - bin/fido2-assert
+  - bin/fido2-cred
+  - bin/fido2-token
+
+test:
+  dependencies:
+    tea.xyz/gx/cc: c99
+  script:
+    - mv $FIXTURE test.c
+    - cc test.c -o test -lfido2
+    - ./test
+  fixture: |
+    #include <stddef.h>
+    #include <stdio.h>
+    #include <fido.h>
+    int main(void) {
+      fido_init(FIDO_DEBUG);
+      // Attempt to enumerate up to five FIDO/U2F devices. Five is an arbitrary number.
+      size_t max_devices = 5;
+      fido_dev_info_t *devlist;
+      if ((devlist = fido_dev_info_new(max_devices)) == NULL)
+        return 1;
+      size_t found_devices = 0;
+      int error;
+      if ((error = fido_dev_info_manifest(devlist, max_devices, &found_devices)) == FIDO_OK)
+        printf("FIDO/U2F devices found: %s\\n", found_devices ? "Some" : "None");
+      fido_dev_info_free(&devlist, max_devices);
+    }