使用来自cmake的autotools构建库 [英] Building a library using autotools from cmake

问题描述

这是我第一次尝试cmake，如果可能，我想有一些反馈关于我做了一些问题仍然存在。

在CMakeLists。 txt的库文件夹，我创建了两个makefile目标： configure-antlr3c 和 antlr3c 。第一个目标运行autotools配置shell脚本，第二个运行make可执行文件来构建库：

 ＃CMakeLists.txt in libantlr3c-3.1.3 
 add_custom_target（
 configure-antlr3c 
 $ {SHELL_EXECUTABLE} configure 
 WORKING_DIRECTORY $ {CMAKE_CURRENT_SOURCE_DIR} 
）
 
 add_custom_target（
 antlr3c 
 $ {MAKE} 
 DEPENDS configure-antlr3c 
 WORKING_DIRECTORY $ {CMAKE_CURRENT_SOURCE_DIR} 
）
  

主要的问题是 configure-antlr3c 目标总是过期即使没有发生变化也会被执行。此外，我需要在一个单独的目录（不是在我的项目的根目录）生成我的cmake makefile，以避免重写自动工具的库的Makefile ...

有任何人有这个问题（建立autotools项目与cmake）？

编辑：解决方案

/ strong>
在根CMakeLists.txt中：

  include（ExternalProject）
 ExternalProject_Add $ b libantlr3c 
 SOURCE_DIR $ {CMAKE_CURRENT_SOURCE_DIR} /lib/libantlr3c-3.1.3 
 CONFIGURE_COMMAND $ {CMAKE_CURRENT_SOURCE_DIR} /lib/libantlr3c-3.1.3/configure --prefix = $ {CMAKE_CURRENT_SOURCE_DIR} / lib / libantlr3c-3.1.3 
 PREFIX $ {CMAKE_CURRENT_SOURCE_DIR} /lib/libantlr3c-3.1.3 
 BUILD_COMMAND make 
 BUILD_IN_SOURCE 1 
）
  
 
 
解决方案
我认为你最好使用ExternalProject 功能。我想你有你的项目，并在一个子目录中有libantrl？
 项目
 +  -  libantlr 
 +  -  mysrc 
 ---- etc ---- 
  
你可以在顶层CMakeLists.txt中做这样的事情：
  cmake_minimum_required（VERSION 2.8）
 project ）
 include（ExternalProject）
 ExternalProject_Add（libantlr 
 SOURCE_DIR $ {CMAKE_CURRENT_SOURCE_DIR} / libantlr 
 CONFIGURE_COMMAND $ {CMAKE_CURRENT_SOURCE_DIR} / libantlr / configure --prefix =< INSTALL_DIR> 
 BUILD_COMMAND $ {MAKE}）
  
 < INSTALL_DIR& code>被扩展到像libantlr-prefix这样的东西，所以事情安装在你的构建树而不是/ usr / local，这是autotools会做没有前缀。
 
This is my first try with cmake and I would like to have, if possible, some feedbacks about what I did since some problems remain.

In the CMakeLists.txt of the library folder, I created two makefile targets: configure-antlr3c and antlr3c. The first target runs the autotools configuration shell script, the second one runs the make executable to build the library:
# CMakeLists.txt in libantlr3c-3.1.3 
add_custom_target(
  configure-antlr3c
  ${SHELL_EXECUTABLE} configure
  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)

add_custom_target(
  antlr3c
   ${MAKE}
   DEPENDS configure-antlr3c
   WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)
The main problem is thatconfigure-antlr3c target is always "out of date", so it will always be executed even if no changes happened. Moreover, I necessarily need to generate my cmake makefiles in a separate directory (not in the root directory of my project) to avoid overriding the autotools Makefile of the library...

Has anyone had this problem (building autotools projects with cmake) ? And if so, what have been your solutions ?

Thank you.

EDIT : Solution
In the root CMakeLists.txt:
include(ExternalProject)
ExternalProject_Add(
  libantlr3c
  SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/lib/libantlr3c-3.1.3
  CONFIGURE_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/lib/libantlr3c-3.1.3/configure --prefix=${CMAKE_CURRENT_SOURCE_DIR}/lib/libantlr3c-3.1.3
  PREFIX ${CMAKE_CURRENT_SOURCE_DIR}/lib/libantlr3c-3.1.3
  BUILD_COMMAND make
  BUILD_IN_SOURCE 1
)

解决方案
I think that you'd be better off using the ExternalProject feature of cmake. I guess you have your project and have libantrl in a sub directory?
project
      +- libantlr
      +- mysrc
  ---- etc ----
If that's the case, you can do something like this in the top level CMakeLists.txt:
cmake_minimum_required(VERSION 2.8)
project(test)
include(ExternalProject)
ExternalProject_Add(libantlr
    SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/libantlr
    CONFIGURE_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/libantlr/configure --prefix=<INSTALL_DIR>
    BUILD_COMMAND ${MAKE})
The <INSTALL_DIR> is expanded to something like libantlr-prefix, so things are installed in your build tree rather than in /usr/local, which is what autotools would do without a prefix.

                        
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