Add initial recipe for boringssl

recipes/boringssl/all/conandata.yml

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+sources:
+  "0.20251002.0":
+    url: "https://github.com/google/boringssl/releases/download/0.20251002.0/boringssl-0.20251002.0.tar.gz"
+    sha256: "f96733fc3df03d4195db656d1b7b8c174c33f95d052f811f0ecc8f4e4e3db332"

recipes/boringssl/all/conanfile.py

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+from conan import ConanFile
+from conan.tools.build import check_min_cppstd
+from conan.tools.cmake import CMake, CMakeDeps, CMakeToolchain, cmake_layout
+from conan.tools.files import (
+    apply_conandata_patches,
+    copy,
+    export_conandata_patches,
+    get,
+)
+import os
+
+required_conan_version = ">=2.0.9"
+
+
+class BoringSSLConan(ConanFile):
+    name = "boringssl"
+    description = "BoringSSL is a fork of OpenSSL aimed at Google needs."
+    license = "Apache-2.0"
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://boringssl.googlesource.com/boringssl/"
+    topics = ("tls", "ssl", "crypto", "openssl", "boringssl")
+    package_type = "library"
+    settings = "os", "arch", "compiler", "build_type"
+
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+        "openssl_no_asm": [True, False],
+        "openssl_small": [True, False],
+    }
+
+    default_options = {
+        "shared": False,
+        "fPIC": True,
+        "openssl_no_asm": False,
+        "openssl_small": False,
+    }
+
+    # Remove fPIC when shared=True
+    implements = ["auto_shared_fpic"]
+
+    def export_sources(self):
+        export_conandata_patches(self)
+
+    def layout(self):
+        cmake_layout(self)
+
+    def build_requirements(self):
+        self.tool_requires("cmake/[>=3.22 <4]")
+
+        # On Windows x86/x64, NASM is needed when assembly is enabled (default).
+        # Set -o boringssl:openssl_no_asm=True to avoid NASM.
+        if (
+            self.settings.os == "Windows"
+            and str(self.settings.arch) in ("x86", "x86_64")
+            and not self.options.openssl_no_asm
+        ):
+            self.tool_requires("nasm/2.16.01")
+
+    def validate(self):
+        check_min_cppstd(self, 17)
+
+    def source(self):
+        get(self, **self.conan_data["sources"][str(self.version)], strip_root=True)
+        apply_conandata_patches(self)
+
+    def generate(self):
+        tc = CMakeToolchain(self)
+        tc.cache_variables["CMAKE_FIND_PACKAGE_PREFER_CONFIG"] = True
+
+        tc.cache_variables["OPENSSL_NO_ASM"] = bool(self.options.openssl_no_asm)
+        tc.cache_variables["OPENSSL_SMALL"] = bool(self.options.openssl_small)
+
+        tc.generate()
+
+        deps = CMakeDeps(self)
+        deps.generate()
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def package(self):
+        copy(
+            self,
+            "LICENSE",
+            self.source_folder,
+            os.path.join(self.package_folder, "licenses"),
+        )
+
+        cmake = CMake(self)
+        cmake.install()
+
+        # Intentionally DO NOT remove lib/cmake to preserve the upstream OpenSSL
+        # config package so consumers can use: find_package(OpenSSL CONFIG)
+
+    def package_info(self):
+        # So consumers can use: find_package(OpenSSL CONFIG)
+        self.cpp_info.set_property("cmake_file_name", "OpenSSL")
+
+        # OpenSSL::Crypto
+        crypto = self.cpp_info.components["crypto"]
+        crypto.set_property("cmake_target_name", "OpenSSL::Crypto")
+        crypto.libs = ["crypto"]
+
+        if self.settings.os == "Windows":
+            # Upstream adds ws2_32 on Windows
+            crypto.system_libs.append("ws2_32")
+        elif str(self.settings.os) not in ("Android", "Generic"):
+            # Upstream links Threads::Threads on most non-Android/embedded platforms
+            crypto.system_libs.append("pthread")
+
+        # OpenSSL::SSL
+        ssl = self.cpp_info.components["ssl"]
+        ssl.set_property("cmake_target_name", "OpenSSL::SSL")
+        ssl.libs = ["ssl"]
+        ssl.requires = ["crypto"]

recipes/boringssl/all/test_package/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.15)
+project(test_package LANGUAGES C CXX)
+
+set(CMAKE_FIND_PACKAGE_PREFER_CONFIG ON)
+
+# Use the OpenSSL config package installed by BoringSSL
+find_package(OpenSSL REQUIRED CONFIG)
+
+add_executable(test_package test_package.cpp)
+target_link_libraries(test_package PRIVATE OpenSSL::SSL OpenSSL::Crypto)
+target_compile_features(test_package PRIVATE cxx_std_17)

recipes/boringssl/all/test_package/conanfile.py

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+from conan import ConanFile
+from conan.tools.cmake import CMake, cmake_layout
+import os
+
+
+class TestPackage(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+    generators = ("CMakeToolchain", "CMakeDeps")
+    test_type = "explicit"
+
+    def requirements(self):
+        self.requires(self.tested_reference_str)
+
+    def layout(self):
+        cmake_layout(self)
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if not self.conf.get("tools.build:skip_test", default=False):
+            exe = os.path.join(self.cpp.build.bindirs[0], "test_package")
+            self.run(exe, env="conanrun")

recipes/boringssl/all/test_package/test_package.cpp

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+#include <openssl/base.h>
+#include <openssl/crypto.h>
+#include <openssl/ssl.h>
+
+#include <cassert>
+#include <cstring>
+#include <iostream>
+
+int main() {
+#if !defined(OPENSSL_IS_BORINGSSL)
+#error                                                                         \
+    "This test must be compiled against BoringSSL headers (OPENSSL_IS_BORINGSSL not defined)."
+#endif
+
+  // Runtime verification that we linked against BoringSSL.
+  const char *version = OpenSSL_version(OPENSSL_VERSION);
+  std::cout << "OpenSSL_version: " << version << "\n";
+  if (!version || std::strstr(version, "BoringSSL") == nullptr) {
+    std::cerr << "ERROR: The loaded libcrypto/libssl does not appear to be "
+                 "BoringSSL.\n";
+    return 1;
+  }
+
+  // Basic sanity to ensure libssl is usable.
+  SSL_CTX *ctx = SSL_CTX_new(TLS_method());
+  assert(ctx != nullptr);
+  SSL_CTX_free(ctx);
+
+  std::cout << "BoringSSL test executable linked and ran.\n";
+  return 0;
+}

recipes/boringssl/config.yml

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+versions:
+  "0.20251002.0":
+    folder: all