Conan 1.x迁移至2.x后静态库构建异常求助

核心问题排查与修复步骤 #

1. 修正BUILD_SHARED_LIBS赋值类型 #

你在generate方法中将BUILD_SHARED_LIBS设为字符串"OFF"，CMake对布尔变量的处理更兼容布尔值，改为False即可确保静态库生成逻辑生效：

def generate(self):
    tc = CMakeToolchain(self)
    tc.variables["BUILD_SHARED_LIBS"] = False  # 替换字符串为布尔值
    tc.generate()

2. 修复Layout与源码目录的不匹配 #

你的layout指定了src_folder="src"，但实际源码被克隆到my-api目录，导致Conan路径上下文混乱，CMakeToolchain配置无法正确传递。两种修复方案：

• 方案一：调整源码目录到layout指定路径

def source(self):
    self.run(f"git clone --depth 1 --branch {BRANCH_NAME} git@github.com:EMCP/my-api.git")
    # 将my-api内容移动到src目录
    self.run("mv my-api/* src/ && rm -rf my-api")
    # 修改CMakeLists.txt的路径为src/CMakeLists.txt
    files.replace_in_file(self, file_path="src/CMakeLists.txt", search="project( IBKR LANGUAGES CXX )",
                          replace='''project( MYAPI LANGUAGES CXX )
add_compile_options(-std=c++17)''')

• 方案二：修改layout匹配源码目录

def layout(self):
    basic_layout(self, src_folder="my-api")

def build(self):
    cmake = CMake(self)
    cmake.configure()  # 无需再指定build_script_folder，layout已关联源码目录
    cmake.build()

3. 强制覆盖原库CMakeLists的动态库设置 #

原第三方库的CMakeLists.txt可能硬编码了动态库生成逻辑，需在source阶段额外添加替换：

# 替换显式的SHARED库定义
files.replace_in_file(self, file_path="my-api/CMakeLists.txt", 
                      search="add_library(twsapi SHARED", 
                      replace="add_library(twsapi STATIC)")

# 覆盖原库的BUILD_SHARED_LIBS设置（如果存在）
files.replace_in_file(self, file_path="my-api/CMakeLists.txt", 
                      search="set(BUILD_SHARED_LIBS ON)", 
                      replace="set(BUILD_SHARED_LIBS OFF)")

4. 修正Conan选项定义格式 #

你的选项定义写法不符合Conan 2.x规范，需明确列出所有可选值：

options = {"shared": [True, False]}
default_options = {"shared": False}

5. 优化package阶段的文件复制逻辑 #

当前package阶段同时复制动态库和静态库，可能误打包生成的动态文件，可根据shared选项过滤：

def package(self):
    cmake = CMake(self)
    cmake.install()

    copy(self, "*.h", self.source_folder, dst=join(self.package_folder, "include"), keep_path=False)
    
    if self.options.shared:
        copy(self, "*.lib", self.source_folder, dst=join(self.package_folder, "lib"), keep_path=False)
        copy(self, "*.dll", self.source_folder, dst=join(self.package_folder, "bin"), keep_path=False)
        copy(self, "*.so", self.source_folder, dst=join(self.package_folder, "lib"), keep_path=False)
        copy(self, "*.so", src=join(self.build_folder, "lib"), dst=join(self.package_folder, "lib"), keep_path=False)
        copy(self, "*.dylib", self.source_folder, dst=join(self.package_folder, "lib"), keep_path=False)
    else:
        copy(self, "*.lib", self.source_folder, dst=join(self.package_folder, "lib"), keep_path=False)
        copy(self, "*.a", self.source_folder, dst=join(self.package_folder, "lib"), keep_path=False)
        copy(self, "*.a", src=join(self.build_folder, "lib"), dst=join(self.package_folder, "lib"), keep_path=False)

    # 系统库复制逻辑保留
    lib_paths = ["/usr/lib/x86_64-linux-gnu/libbidgcc000.a"]
    for lib_path in lib_paths:
        if os.path.isfile(lib_path):
            self.output.info(f"Found library: {lib_path}")
            copy(self, pattern="libbidgcc000*.a", dst="lib", keep_path=False, src="/usr/lib/x86_64-linux-gnu/")
        else:
            self.output.warn(f"Library not found: {lib_path}")

内容的提问来源于stack exchange，提问作者Erik