error: Libtool library used but 'LIBTOOL' is undefined
2022-05-05
2
0执行configure遇到这个错误，这是个突然出现的错误，之前相同的代码执行configure时没有出错，Libtool 是安装了的。这到底是什么原因呢？
相关错误输出：
Makefile.am:26: error: Libtool library used but 'LIBTOOL' is undefined
Makefile.am:26: The usual way to define 'LIBTOOL' is to add 'LT_INIT'
Makefile.am:26: to 'configure.ac' and run 'aclocal' and 'autoconf' again.
Makefile.am:26: If 'LT_INIT' is in 'configure.ac', make sure
Makefile.am:26: its definition is in aclocal's search path.
ERROR: autogen.sh failed, autogen is incomplete
./libtool: line 1290: func_opt_split: command not found
libtool: Version mismatch error. This is libtool 2.2.6b, but the
libtool: definition of this LT_INIT comes from libtool 2.4.6.
libtool: You should recreate aclocal.m4 with macros from libtool 2.2.6b
libtool: and run autoconf again.
make[1]: *** [libpng14_la-png.lo] Error 63
make[1]: Leaving directory `/opt/libpng-1.4.22'
make: *** [all] Error 2
# autoconf
configure.ac:38: error: possibly undefined macro: AC_PROG_LD
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
# automake --add-missing
Makefile.am:26: error: Libtool library used but 'LIBTOOL' is undefinederror: Libtool library used but 'LIBTOOL' is undefined
Makefile.am:26: The usual way to define 'LIBTOOL' is to add 'LT_INIT'
Makefile.am:26: to 'configure.ac' and run 'aclocal' and 'autoconf' again.
Makefile.am:26: If 'LT_INIT' is in 'configure.ac', make sure
Makefile.am:26: its definition is in aclocal's search path.
发生错误原因？
环境：contos6，php5.6，
最近在研究着让php支持avif转png的功能，由于先前安装的libpng1.6.x版本都带有iCCP警告，导致调用时转换失败，所以在编译安装低版本libpng前就先到高版本的源码目录下执行了一下“make uninstall”，难道就是因为这个命令导致的错误？
奇怪，libpng 所有版本的源码都出现这个问题了。
解决方法
也是怪了，把源码删除，然后重新解压，再执行 configure，make，make install 竟然一切顺利！
相关参考
error: Libtool library used but 'LIBTOOL' is undefined
Libtool library used but `LIBTOOL' is undefined?
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