在“配置”中禁用 -Werror文件
使用 Makefile 制作项目时，我收到此错误：
error: implicit declaration of function ‘fatal’ [-Werror=implicit-function-declaration]
cc1: all warnings being treated as errors
./configure --help 显示：
Optional Features:
--disable-option-checking ignore unrecognized --enable/--with options
--disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
--enable-FEATURE[=ARG] include FEATURE [ARG=yes]
--disable-dependency-tracking speeds up one-time build
--enable-dependency-tracking do not reject slow dependency extractors
--disable-gtktest do not try to compile and run a test GTK+ program
--enable-debug Turn on debugging
How can I Tell configure not include -Werror？
While making a project with Makefile, I get this error:
error: implicit declaration of function ‘fatal’ [-Werror=implicit-function-declaration]
cc1: all warnings being treated as errors
The ./configure --help shows:
Optional Features:
--disable-option-checking ignore unrecognized --enable/--with options
--disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
--enable-FEATURE[=ARG] include FEATURE [ARG=yes]
--disable-dependency-tracking speeds up one-time build
--enable-dependency-tracking do not reject slow dependency extractors
--disable-gtktest do not try to compile and run a test GTK+ program
--enable-debug Turn on debugging
How can I tell configure not to include -Werror?
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Werror 是一个 GCC 参数，您无法删除它直接通过./configure。否则，类似
--disable-error的选项将显示在帮助文本中。然而，这是可能的。设置环境变量：
这是针对 C 编译器的。如果项目使用 C++，请执行以下操作：
在极少数情况下，项目不支持此变量，最后的手段是编辑
configure.ac文件并搜索-Werror并将其从出现的字符串中删除（但要小心）。Werror is a GCC argument, and you cannot remove it directly via ./configure. Otherwise, an option like
--disable-errorwould show up in the help text. However, it's possible.Set an environment variable:
That's for C compilers. If the project uses C++, do:
In the very rare case the project does not honor this variables, your last resort is to edit the
configure.acfile and search for-Werrorand remove it from the string it occurs in (be careful though).看起来这个功能已经在 autotools 中存在很多年了：
不幸的是，我无法让以下特定情况发挥作用：
如果可以的话，如果转义“
=”符号，也许它可以工作。就像skim所说一样，人们仍然可以使用CFLAGS或<代码>CXXFLAGS。It seems like the feature has been in autotools for many years:
Unfortunately, I wasn't able to get the following specific case to work:
Maybe it could work if one escaped the '
=' symbol, assuming it's possible. Like skim says, one can still useCFLAGSorCXXFLAGS.我必须在我的模块上使用
--disable-Werror（带有大写的W）。虽然sudoman的答案上面建议使用--disable-werror（使用小写的w）。它可能看起来像一个拼写错误，但它实际上取决于您特定的
configure设置，特别是如果configure是由autoconf生成的。需要传递给configure脚本以禁用Werror的内容取决于构建系统的设置方式。如果您的项目使用
autoconf- 中的 AX_COMPILER_FLAGS 选项archive项目，则默认启用-Werror。在另一个模块中，您可能会发现类似这样的内容：
因此您需要使用
--disable-werror。I had to use
--disable-Werror(with an uppercaseW) on my module. While sudoman's answer above suggests to use--disable-werror(with a lowercasew).It may look like a typo, but it is actually dependent on your particular
configuresetup, especially ifconfigureis generated byautoconf. What needs to be passed to theconfigurescript to disableWerrordepends on how the build system was setup.If your project uses the AX_COMPILER_FLAGS option from the
autoconf-archiveproject, then by default-Werroris enabled.In another module you may find something like this:
And thus you would need to use
--disable-werror.这对我有用，在 Lubuntu 16.10 上编译curlpp：
This works for me, compiling curlpp on Lubuntu 16.10:
我遇到了这个问题，结果发现我刚启动的 EC2 实例运行 Ubuntu 20.04 (Focal Fossa)。
只需运行 sudo apt install gcc 就可以解决这个问题。
I ran into this problem, and it turned out that GCC was not installed on my freshly-started EC2 instance running Ubuntu 20.04 (Focal Fossa).
Simply running
sudo apt install gccfixed this issue for me.