Unescaped left brace in regex is illegal here in regex; marked by HERE in

Unescaped left brace in regex is illegal here in regex; marked by <– HERE in m/${ <– HERE ([^ \t=:+{}]+)}/ at xxx line xxx

转载自https://www.cnblogs.com/zengjfgit/p/9178523.html

原因

原因是Perl不支持以前的写法。

解决方法

编辑提示的文件
xxx的行号
xxx

例如
/usr/bin/automake 第
3930 行

将 -
$text =~ s/\${([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;

修改为 -
$text =~ s/\$[{]([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;

-   $text =~ s/\${([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;
+   $text =~ s/\$[{]([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;

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原文链接：Unescaped left brace in regex is illegal here in regex; marked by HERE in，转载请注明来源！