如何使用柯南打包二进制项目?

Question

问题:

包的使用者无法加载包的二进制文件的共享库。

find_package(MyThirdParty REQUIRED) # MyThirdParty is installed using Conan
find_program(binary_paty MyThirdParty REQUIRED)
execute_process(COMMAND ${binary_path} COMMAND_ERROR_IS_FATAL ANY)

execute_process命令将失败，因为MyThirdParty的共享库缺失。

如何打包第三方二进制项目?

最小可复制示例:

第三方项目:

file(WRITE Library.hh "void Func();")
file(WRITE Library.cc "void Func() {}")
add_library(Library SHARED Library.hh Library.cc)
file(WRITE Main.cc "#include "Library.hh"nint main() { Func(); }")
add_executable(MyThirdParty Main.cc)
target_link_libraries(MyThirdParty PRIVATE Library)
install(TARGETS MyThirdParty Library EXPORT MyThirdPartyConfig)
install(EXPORT MyThirdPartyConfig
NAMESPACE MyThirdParty::
DESTINATION lib/cmake/MyThirdParty
)

我尝试用柯南包装第三方:

from conans import ConanFile, CMake, tools
class MyThirdPartyConan(ConanFile):
name = "MyThirdParty"
version = "1.0.0"
settings = "os", "compiler", "build_type", "arch"
def source(self):
tools.download(
filename = "CMakeLists.txt",
url = "https://gist.githubusercontent.com/gccore/9007084e1b307592ae040ceb5745bf5f/raw/419a96712145e8d24d4c9982ab3b7fd31d44b9f0/CMakeLists.txt")
def build(self):
cmake = CMake(self)
cmake.configure()
cmake.build()
def package(self):
cmake = CMake(self)
cmake.install()

消费者:

find_package(MyThirdParty REQUIRED)
find_program(binary_paty MyThirdParty REQUIRED)
execute_process(COMMAND ${binary_path} COMMAND_ERROR_IS_FATAL ANY)

最后conanfile.txt:

[requires]
MyThirdParty/1.0.0@Ghasem/Test
[generators]
cmake_find_package

但是由于第三方的共享库，消费者使用柯南包的CMake失败。当用户的CMake试图执行MyThirdParty二进制文件时，它会失败，因为它找不到libLibrary.so文件。

---

我的环境:

<子>

• 操作系统:Fedora 35
内核:
• Linux 5.18.9-100.fc35.x86_64
• 编译器:GCC 11.3.1 20220421
• CMake:3.22.2
• 柯南:1.47.0

Answer 1

在Linux上，我们可以使用patchelf并在打包状态更改二进制RPATH:

def package(self):
cmake = CMake(self);
cmake.install();
self.run("patchelf --set-rpath '$ORIGIN/../lib' " +
self.package_folder + "/bin/MyThirdParty");

对于Windows来说，只是把共享库文件放在二进制文件旁边，Windows的链接器/加载器并没有努力变得聪明(像Linux的链接器/加载器那样)。