C++ 如何在 automake 脚本中创建共享库 (.so)？
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How to create a shared library (.so) in an automake script?
提问by skimon
given some source file test.cpp I would like to create a shared library libtest.so . I am trying to do this within the scope of an automake file however I cannot seem to get this to work.
给定一些源文件 test.cpp 我想创建一个共享库 libtest.so 。我正在尝试在 automake 文件的范围内执行此操作，但是我似乎无法使其正常工作。
For example under g++ I do the following:
例如在 g++ 下，我执行以下操作：
g++ -shared -fPIC test.cpp -o libtest.so
then i can create another file that will depend on the shared library as follows:
然后我可以创建另一个依赖于共享库的文件，如下所示：
g++ mytest.cpp libtest.so -o blah
I have read that automake only supports making shared libraries via libtool. I have tried to get my automake scriupt to work as follows but it never seems to produce an .so . The closest i have gotten is for it to produce an .la and .o file:
我读过 automake 只支持通过 libtool 创建共享库。我试图让我的 automake 脚本按如下方式工作，但它似乎从未产生 .so 。我得到的最接近的是它生成一个 .la 和 .o 文件：
in configure.ac:
在configure.ac：
AC_ENABLE_SHARED
AC_DISABLE_STATIC
AC_PROG_LIBTOOL(libtool)
in Makefile.am
在 Makefile.am 中
lib_LTLIBRARIES=libtest.la
libtest_la_SOURCES=test.cpp
libtest_la_CFLAGS=-fPIC
libtest_la_CPPFLAGS=-fPIC
libtest_la_CXXFLAGS=-fPIC
libtest_la_LDFLAGS= -shared -fPIC
Could someone give me an example of building an .so based on the above ?
有人可以给我一个基于上述构建 .so 的示例吗？
采纳答案by William Pursell
If you just put LT_INIT in configure.ac and in Makefile.am, do:
如果您只是将 LT_INIT 放在 configure.ac 和 Makefile.am 中，请执行以下操作：
lib_LTLIBRARIES = libtest.la libtest_la_SOURCES = test.cpp libtest_la_LDFLAGS = -version-info 0:0:0
you should get a .so. You should not specify -fPIC to CFLAGS, etc. The -version-info specifier is not necessary, but is a good idea.
你应该得到一个.so。您不应该为 CFLAGS 等指定 -fPIC。 -version-info 说明符不是必需的，但它是一个好主意。
