Help needed for building a previous version of "curl"

[johne53]

First of all, sorry about the length of this!

vcpkg contains a port named curl and IIUC the most recent version is 8.19.0 whereas I'm trying to build an earlier version called 7.66.0

Following attempts with similar builds previously I created a folder here:- D:\vcpkg-stuff\gnu-windows\src\vcpkg\CurlTest and I modified curl's original vcpkg.json file as follows. The "overrides" section (quite near the top) is the bit that I added:-

{
  "name": "curl",
  "builtin-baseline": "4b77da7fed37817f124936239197833469f1b9a8",
  "dependencies": [
    {
      "name": "vcpkg-cmake",
      "host": true
    },
    {
      "name": "vcpkg-cmake-config",
      "host": true
    },
    "zlib"
  ],
  "default-features": [
    "non-http",
    "ssl"
  ],
  "overrides": [
    {
      "name": "curl",
      "version": "7.66.0"
    }
  ],
  "features": {
    "brotli": {
      "description": "brotli support (brotli)",
      "dependencies": [
        "brotli"
      ]
    },
    "c-ares": {
      "description": "c-ares support",
      "dependencies": [
        "c-ares"
      ]
    },
    "gnutls": {
      "description": "TLS support (gnutls)",
      "dependencies": [
        {
          "name": "libgnutls",
          "platform": "!windows | mingw"
        },
        {
          "name": "shiftmedia-libgnutls",
          "platform": "windows & !mingw"
        }
      ]
    },
    "gsasl": {
      "description": "GSASL support (libgsasl)",
      "dependencies": [
        "gsasl"
      ]
    },
    "gssapi": {
      "description": "krb5 support",
      "supports": "!windows",
      "dependencies": [
        "krb5"
      ]
    },
    "http2": {
      "description": "HTTP2 support",
      "dependencies": [
        {
          "name": "curl",
          "default-features": false,
          "features": [
            "ssl"
          ]
        },
        "nghttp2"
      ]
    },
    "http3": {
      "description": "HTTP3 support with ngtcp2 on openssl",
      "dependencies": [
        {
          "name": "curl",
          "default-features": false,
          "features": [
            "openssl"
          ]
        },
        "nghttp3",
        {
          "name": "ngtcp2",
          "default-features": false,
          "features": [
            "openssl"
          ]
        }
      ]
    },
    "httpsrr": {
      "description": "enable support for HTTPS RR"
    },
    "idn": {
      "description": "Default IDN support",
      "dependencies": [
        {
          "name": "curl",
          "default-features": false,
          "features": [
            "winidn"
          ],
          "platform": "windows"
        },
        {
          "name": "curl",
          "default-features": false,
          "features": [
            "idn2"
          ],
          "platform": "!windows"
        }
      ]
    },
    "idn2": {
      "description": "idn2 support (libidn2)",
      "dependencies": [
        "libidn2"
      ]
    },
    "ldap": {
      "description": "LDAP support",
      "supports": "!uwp",
      "dependencies": [
        {
          "name": "curl",
          "default-features": false,
          "features": [
            "non-http"
          ]
        },
        {
          "name": "openldap",
          "platform": "!windows"
        }
      ]
    },
    "mbedtls": {
      "description": "TLS support (mbedTLS)",
      "dependencies": [
        "mbedtls"
      ]
    },
    "non-http": {
      "description": "Enables protocols beyond HTTP/HTTPS/HTTP2/HTTP3"
    },
    "openssl": {
      "description": "TLS support (OpenSSL)",
      "dependencies": [
        "openssl"
      ]
    },
    "psl": {
      "description": "Use psl support (libpsl)",
      "dependencies": [
        "libpsl"
      ]
    },
    "rtmp": {
      "description": "RTMP support",
      "dependencies": [
        "librtmp"
      ]
    },
    "ssh": {
      "description": "SSH support via libssh2",
      "dependencies": [
        {
          "name": "curl",
          "default-features": false,
          "features": [
            "non-http"
          ]
        },
        {
          "name": "curl",
          "default-features": false,
          "features": [
            "openssl"
          ]
        },
        "libssh2"
      ]
    },
    "ssl": {
      "description": "Default SSL / TLS implementation.",
      "dependencies": [
        {
          "$comment": "Defaults to schannel on Windows, unless http3 is also enabled",
          "name": "curl",
          "default-features": false,
          "features": [
            "sspi"
          ],
          "platform": "(windows & !uwp) | mingw"
        },
        {
          "$comment": "Otherwise, defaults to OpenSSL.",
          "name": "curl",
          "default-features": false,
          "features": [
            "openssl"
          ],
          "platform": "(uwp | !windows) & !mingw"
        }
      ]
    },
    "ssls-export": {
      "description": "SSL session import/export",
      "dependencies": [
        {
          "name": "curl",
          "default-features": false,
          "features": [
            "ssl"
          ]
        }
      ]
    },
    "sspi": {
      "description": "SSPI support",
      "supports": "(windows & !uwp) | mingw"
    },
    "tool": {
      "description": "Builds curl executable",
      "supports": "!uwp"
    },
    "websockets": {
      "description": "WebSocket support"
    },
    "winidn": {
      "description": "WinIDN support",
      "supports": "windows"
    },
    "winldap": {
      "description": "Obsolete. Use feature 'ldap' instead.",
      "dependencies": [
        {
          "name": "curl",
          "default-features": false,
          "features": [
            "ldap"
          ]
        }
      ]
    },
    "wolfssl": {
      "description": "SSL support (wolfSSL)",
      "dependencies": [
        "wolfssl"
      ]
    },
    "zstd": {
      "description": "ZStandard support (zstd)",
      "dependencies": [
        "zstd"
      ]
    }
  }
}

Next I created a small file called vcpkg-configurantion.json looking like this:-

{
  "default-registry": {
    "kind": "git",
    "repository": "https://github.com/Microsoft/vcpkg",
    "baseline": "4b77da7fed37817f124936239197833469f1b9a8"
  },
  "registries": [
    {
      "kind": "git",
      "repository": "https://github.com/Microsoft/vcpkg",
      "baseline": "67a9305c75f89c6a7e229c94d1800b598f0666b3",
      "packages": [ "curl*", "libcurl*" ]
    }
  ]
}

I then opened Windows Powershell (with all its usual settings, navigated to D:\vcpkg-stuff\gnu-windows\src\vcpkg\CurlTest and typed the command ../vcpkg install --dry-run which produces this output:-

Fetching registry information from https://github.com/Microsoft/vcpkg (HEAD)...
Detecting compiler hash for triplet x64-windows...
Compiler found: G:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.44.35207/bin/Hostx64/x64/cl.exe
The following packages will be built and installed:
    vcpkg-cmake:x64-windows@2024-04-23 -- git+https://github.com/Microsoft/vcpkg@e74aa1e8f93278a8e71372f1fa08c3df420eb840
    vcpkg-cmake-config:x64-windows@2024-05-23 -- git+https://github.com/Microsoft/vcpkg@97a63e4bc1a17422ffe4eff71da53b4b561a7841
    zlib:x64-windows@1.3.1 -- git+https://github.com/Microsoft/vcpkg@3f05e04b9aededb96786a911a16193cdb711f0c9

But unfortunately there's no mention that curl will get built. Can anyone see what I've done wrong?

[johne53]

I haven't tried a proper build yet but I think I might (possibly?) have fixed it. Looking at a previous build that worked, it turned out that I needed to modify the initial "dependencies" section from vcpkg.json to remove 1 line and add 1 line, like this:-

{
  "builtin-baseline": "4b77da7fed37817f124936239197833469f1b9a8",
  "dependencies": [
    "curl"
    {
      "name": "vcpkg-cmake",
      "host": true
    },
    {
      "name": "vcpkg-cmake-config",
      "host": true
    },
    "zlib"
  ],

Fingers crossed !