【Libevent】Linux环境编译错误—"--tag=CC: command not found 编译报错"

GCC编译代码时，执行./configure在代码目录下生成了libtool脚本，再执行make 出现类似以下错误

../libtool: line 832: X--tag=CC: command not found
../libtool: line 865: libtool: ignoring unknown tag : command not found
../libtool: line 832: X--mode=compile: command not found
../libtool: line 998: *** Warning: inferring the mode of operation is deprecated.: command not found
../libtool: line 999: *** Future versions of Libtool will require --mode=MODE be specified.: command not found
../libtool: line 1142: Xgcc: command not found
../libtool: line 1142: X-DHAVE_CONFIG_H: command not found
../libtool: line 1142: X-I.: command not found
../libtool: line 1142: X-I../include: No such file or directory
../libtool: line 1142: X-g: command not found
../libtool: line 1142: X-I/usr/local/include: No such file or directory
../libtool: line 1142: X-g: command not found
../libtool: line 1142: X-O2: command not found
../libtool: line 1142: X-MT: command not found
../libtool: line 1142: Xargs.lo: command not found
../libtool: line 1142: X-MD: command not found
../libtool: line 1142: X-MP: command not found
../libtool: line 1142: X-MF: command not found
../libtool: line 1142: X.deps/args.Tpo: No such file or directory
../libtool: line 1142: X-c: command not found
../libtool: line 1193: Xargs.lo: command not found
../libtool: line 1198: libtool: compile: cannot determine name of library object from `': command not found

原因据说是因为在项目目录下生成的libtool脚本中定义了$ECHO变量，但是在脚本文件ltmain.sh中，使用的却是$echo（生成的libtool版本太旧）

打开aclocal.m4文件，可以在很前面的一段配置中找到这么两句

# This can be used to rebuild libtool when needed
LIBTOOL_DEPS="$ltmain"

# Always use our own libtool.
LIBTOOL='$(SHELL) $(top_builddir)/libtool'
AC_SUBST(LIBTOOL)dnl

可通过以下方法解决：

 

1. 直接复制系统自带的libtool到项目目录，应该在/usr/bin目录下，覆盖代码文件目录下的libtool，再执行make

（没装就apt-get install libtool 或者 yum install libtool 安装一下吧）

 

2.  修改aclocal.m4文件，将上面的LIBTOOL='$(SHELL) $(top_builddir)/libtool'改成LIBTOOL='$(SHELL)  /usr/bin/libtool'后重新执行./configure

 

3. 将源码目录下libtool脚本中所有的$ECHO替换成$echo. 或者将脚本文件ltmain.sh里的$echo替换成$ECHO，都一样，重新执行./configure