使用automake设置每个文件标志

问题描述

是否有一个方法设置每个文件的基础与automake标志？

特别是，如果我有一个c + +项目，并希望编译-WAll除了我想要的所有文件要禁用特定的警告，我该怎么办？

我试过类似：

  CXXFLAGS = -WAll ... 
 bin_PROGRAMS = test 
 test_SOURCES = main.cpp utility.cpp 
 utility_o_CXXFLAGS = $（CXXFLAGS）-Wno-unused-value 
  

但它不起作用。

编辑：删除了对automake手册的引用，这实际上是误导性的（感谢Douglas Leeder）。 Automake仅支持每个目标标志，而你想要每个对象的标志。一种方法是创建一个包含对象的小型库：

  CXXFLAGS = -Wall ... 
 bin_PROGRAMS = test 
 test_SOURCES = main.cpp 
 test_LDADD = libutility.a 
 noinst_LIBRARIES = libutility.a 
 libutility_a_SOURCES = utility.cpp 
 libutility_a_CXXFLAGS = $（CXXFLAGS）-Wno -unused-value 
  

Is there a way set flags on a per-file basis with automake?
In particular, if I have a c++ project and want to compile with -WAll all the files except one for which I want to disable a particular warning, what could I do?

I tried something like:

CXXFLAGS = -WAll ...
bin_PROGRAMS = test
test_SOURCES = main.cpp utility.cpp
utility_o_CXXFLAGS = $(CXXFLAGS) -Wno-unused-value

but it didn't work.

EDITED: removed reference to automake manual, which was actually misleading (thanks to Douglas Leeder).

解决方案

Automake only supports per-target flags, while you want per-object flags. One way around is to create a small library that contains your object:

CXXFLAGS = -Wall ...
bin_PROGRAMS = test
test_SOURCES = main.cpp
test_LDADD = libutility.a
noinst_LIBRARIES = libutility.a
libutility_a_SOURCES = utility.cpp
libutility_a_CXXFLAGS = $(CXXFLAGS) -Wno-unused-value

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