将带有空格的参数传递给CMake ExternalProject_Add BUILD_COMMAND [英] Pass parameter with spaces to CMake ExternalProject_Add BUILD_COMMAND

问题描述

我试图在Linux中使用CMake的 ExternalProject_Add（...）命令交叉编译bzip2。

但是，为了交叉编译libbzip，您必须修改一些Makefile宏以执行构建。这是我目前的交叉编译变数：

  set（bzlib_CROSS CC = $ {CROSS_PREFIX} gcc AR = $ {CROSS_PREFIX} ar RANLIB = $ {CROSS_PREFIX} ranlib LDFLAGS = -L $ {bzlib_MINGW_SRC} / lib CFLAGS = -Wall -Winline -O2 -g -I $ {bzlib_MINGW_SRC} / include）
  

此变量然后用于构建命令

  set（bzlib_BUILD make $ {bzlib_CROSS} PREFIX = $ {DEPENDENCY_DIR}）
  

CMake错误，因为它试图通过 - O2，-g等到 make ，这当然不起作用，但是当我尝试在 CFLAGS 变量表示

  cc1：错误：unrecognized命令行选项'-Wall -Winline -O2 -g -I / long / path / here / include'
  

可以设置一个带有空格的Makefile宏使用CMake的 BUILD_COMMAND ？谢谢！

解决方案

想象一下...我需要将引用的字符串拆分成自己的变量，

  set（bzlib_CFLAGS-Wall -Winline -O2 -g -I $ {bzlib_MINGW_SRC} / include）
 set（bzlib_CROSS CC = $ {CROSS_PREFIX} gcc AR = $ {CROSS_PREFIX} ar RANLIB = $ {CROSS_PREFIX} ranlib LDFLAGS = -L $ {bzlib_MINGW_SRC} / lib CFLAGS = $ {bzlib_CFLAGS}）
  pre> 
 
 
这工作了！
 
I'm trying to cross compile bzip2 in Linux utilizing CMake's ExternalProject_Add(...) command.

However, in order to cross-compile libbzip, you must modify some of the Makefile macros to execute the build. Here is my current cross compile variable:
set(bzlib_CROSS CC=${CROSS_PREFIX}gcc AR=${CROSS_PREFIX}ar RANLIB=${CROSS_PREFIX}ranlib LDFLAGS=-L${bzlib_MINGW_SRC}/lib CFLAGS=-Wall -Winline -O2 -g -I${bzlib_MINGW_SRC}/include)
This variable is then used for the build command
set(bzlib_BUILD make ${bzlib_CROSS} PREFIX=${DEPENDENCY_DIR})
CMake errors because it is trying to pass -O2, -g, etc. to make, which of course doesn't work, but when I try to add quotes around the CFLAGS variable it says
cc1: error: unrecognized command line option '-Wall -Winline -O2 -g -I/long/path/here/include'
Is it possible to set a Makefile macro with spaces in it using CMake's BUILD_COMMAND? Thanks!
解决方案
Figured it out...I needed to split the quoted string into its own variable like this
set(bzlib_CFLAGS "-Wall -Winline -O2 -g -I${bzlib_MINGW_SRC}/include")
set(bzlib_CROSS CC=${CROSS_PREFIX}gcc AR=${CROSS_PREFIX}ar RANLIB=${CROSS_PREFIX}ranlib LDFLAGS=-L${bzlib_MINGW_SRC}/lib CFLAGS=${bzlib_CFLAGS})
This worked!

                        
这篇关于将带有空格的参数传递给CMake ExternalProject_Add BUILD_COMMAND的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！