Question

在conan install . -s arch=x86系统上运行x86_64时，我希望生成的CONAN_CXXFLAGS_MYLIB=-m32文件中有conanbuildinfo.mak之类的编译器选项，但没有这样的选项。

首先，conanfile.txt的内容：

[requires]
mylib/1.0@demo/dev

[generators]
make

以下是install命令的输出（cmake具有特殊处理，因为它只是一种工具）：

$ conan install . -s cmake:arch=x86_64  -s arch=x86
Configuration:
[settings]
arch=x86
arch_build=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=9
os=Linux
os_build=Linux
cmake:arch=x86_64
[options]
[build_requires]
[env]

conanfile.txt: Installing package
Requirements
    mylib/1.0@demo/dev from local cache - Cache
Packages
    mylib/1.0@demo/dev:eb79ce42f6e6b4359bd7d0a65a238a4dae953257 - Cache
'''
Cross-build from 'Linux:x86_64' to 'Linux:x86'
Installing (downloading, building) binaries...
mylib/1.0@demo/dev: Already installed!
conanfile.txt: Generator make created conanbuildinfo.mak
conanfile.txt: Generator txt created conanbuildinfo.txt
conanfile.txt: Generated conaninfo.txt
conanfile.txt: Generated graphinfo

生成的makfe文件如下：

#-------------------------------------------------------------------#
#             Makefile variables from Conan Dependencies            #
#-------------------------------------------------------------------#

CONAN_ROOT_MYLIB ?=  \
/home/username/.conan/data/mylib/1.0/demo/dev/package/eb79ce42f6e6b4359bd7d0a65a238a4dae953257

CONAN_SYSROOT_MYLIB ?=  \


CONAN_INCLUDE_DIRS_MYLIB +=  \
/home/username/.conan/data/mylib/1.0/demo/dev/package/eb79ce42f6e6b4359bd7d0a65a238a4dae953257/include

CONAN_LIB_DIRS_MYLIB +=  \
/home/username/.conan/data/mylib/1.0/demo/dev/package/eb79ce42f6e6b4359bd7d0a65a238a4dae953257/lib

CONAN_BIN_DIRS_MYLIB +=  \


CONAN_BUILD_DIRS_MYLIB +=  \
/home/username/.conan/data/mylib/1.0/demo/dev/package/eb79ce42f6e6b4359bd7d0a65a238a4dae953257/

CONAN_RES_DIRS_MYLIB +=  \


CONAN_LIBS_MYLIB +=  \
mylib

CONAN_SYSTEM_LIBS_MYLIB +=  \


CONAN_DEFINES_MYLIB +=  \


CONAN_CFLAGS_MYLIB +=  \


CONAN_CXXFLAGS_MYLIB +=  \


CONAN_SHAREDLINKFLAGS_MYLIB +=  \


CONAN_EXELINKFLAGS_MYLIB +=  \


CONAN_FRAMEWORKS_MYLIB +=  \


CONAN_FRAMEWORK_PATHS_MYLIB +=  \


CONAN_ROOTPATH +=  \
$(CONAN_ROOTPATH_MYLIB)

CONAN_SYSROOT +=  \
$(CONAN_SYSROOT_MYLIB)

CONAN_INCLUDE_DIRS +=  \
$(CONAN_INCLUDE_DIRS_MYLIB)

CONAN_LIB_DIRS +=  \
$(CONAN_LIB_DIRS_MYLIB)

CONAN_BIN_DIRS +=  \
$(CONAN_BIN_DIRS_MYLIB)

CONAN_BUILD_DIRS +=  \
$(CONAN_BUILD_DIRS_MYLIB)

CONAN_RES_DIRS +=  \
$(CONAN_RES_DIRS_MYLIB)

CONAN_LIBS +=  \
$(CONAN_LIBS_MYLIB)

CONAN_DEFINES +=  \
$(CONAN_DEFINES_MYLIB)

CONAN_CFLAGS +=  \
$(CONAN_CFLAGS_MYLIB)

CONAN_CXXFLAGS +=  \
$(CONAN_CXXFLAGS_MYLIB)

CONAN_SHAREDLINKFLAGS +=  \
$(CONAN_SHAREDLINKFLAGS_MYLIB)

CONAN_EXELINKFLAGS +=  \
$(CONAN_EXELINKFLAGS_MYLIB)

CONAN_FRAMEWORKS +=  \
$(CONAN_FRAMEWORKS_MYLIB)

CONAN_FRAMEWORK_PATHS +=  \
$(CONAN_FRAMEWORK_PATHS_MYLIB)

CONAN_SYSTEM_LIBS +=  \
$(CONAN_SYSTEM_LIBS_MYLIB)

#-------------------------------------------------------------------#

柯南知道，这是一个交叉构建，它知道编译器，它以32位（或在仓库中找到32位二进制文件）构建mylib。因此很明显，我的应用程序需要使用-m32进行编译。

我的期望为什么错了？

更新：

我自己找到了解决方案。如果将conanfile.py与自动工具/ make辅助程序一起使用，而不是简单的conanfile.txt，则可以使用conan build .构建应用程序，并且柯南可以设置所有编译器选项并正确定义。这是此类消费者收据的示例：

from conans import ConanFile, AutoToolsBuildEnvironment
from conans import tools

class AppConan(ConanFile):
    name = "mayapp"
    version = "1.0"
    settings = "os", "compiler", "build_type", "arch"
    requires = "mylib/1.0@demo/dev"
    generators = "make", "virtualrunenv"

    def build(self):
        atools = AutoToolsBuildEnvironment(self)
        atools.make()

名侦探柯南生成器未按预期设置CONAN_CXXFLAGS

0 个答案: