如何覆盖 dpkg-buildflags CFLAGS? [英] How to override dpkg-buildflags CFLAGS?

问题描述

我收到了一个包裹:

$ apt-get source <pkg-name>

现在我正在尝试构建它:

and now I am trying to build it with:

$ dpkg-buildpackage -uc -us -j8

在输出的开头，声明:

dpkg-buildpackage: export CFLAGS from dpkg-buildflags (origin: vendor): -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security
dpkg-buildpackage: export CPPFLAGS from dpkg-buildflags (origin: vendor): -D_FORTIFY_SOURCE=2
dpkg-buildpackage: export CXXFLAGS from dpkg-buildflags (origin: vendor): -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security
dpkg-buildpackage: export FFLAGS from dpkg-buildflags (origin: vendor): -g -O2
dpkg-buildpackage: export LDFLAGS from dpkg-buildflags (origin: vendor): -Wl,-Bsymbolic-functions -Wl,-z,relro

我想覆盖这些 CFLAGS(也就是 LDFLAGS).我已经尝试导出 CFLAGS envvar，就像我们使用普通配置一样，但无济于事.如何覆盖这些值?

I would like to override these CFLAGS (also, the LDFLAGS). I have tried exporting the CFLAGS envvar, the same way we do with plain configure, at no avail. How can I override these values?

推荐答案

您尝试重建的包，使用从 dpkg-buildflags 检索到的强化特定标志设置(读取:覆盖)*FLAGS.

the package you are trying to rebuild, sets (read: overrides) the *FLAGS with hardening-specifics flags retrieved from dpkg-buildflags.

如果您出于自己的目的需要覆盖这些标志，您应该告诉 dpkg-buildflags 提供您想要的标志，而不是(强化)默认值.查看 man dpkg-buildflags，您会找到关于环境变量的部分，尤其是.见 DEB_flag_SET 和 DEB_flag_APPEND

if you need to override those flags for your own purposes, you should tell dpkg-buildflags to provide the flags you want, rather than the (hardening) defaults. looking at man dpkg-buildflags, you find the section about environment variables, esp. see DEB_flag_SET and DEB_flag_APPEND

所以这应该可以解决问题(填写您自己的 *FLAGS):

so this should do the trick (fill in your own *FLAGS):

$ DEB_CPPFLAGS_SET="-I/foo/bar/baz" DEB_CFLAGS_SET="-g -O6" DEB_LDFLAGS_SET="-L/fruzzel/frazzel/" dpkg-buildpackage -uc -us -j8 -rfakeroot

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