看起来它正在寻找libmagic.so.1文件。我有这个文件。它位于/usr/lib64。我没有使用root用户运行此安装。
我还在使用rvm和Bundler。当我的Gemfile中的ruby-filemagic行到达时，这是我“bundle”命令的结果：
[server@mine ext]$ ruby extconf.rb --with-magiclib
checking for magic_open() in -ltrue... no
*** ERROR: missing required library to compile this module
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.
更新：
以下是mkmf.log的结果：
have_library: checking for magic_open() in -ltrue... -------------------- no
"gcc -o conftest -I. -I/usr/local/rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/x86_64-linux -I. -g -O2 -fPIC conftest.c -L. -L/usr/local/rvm/rubies/ruby-1.8.7-p358/lib -Wl,-R/usr/local/rvm/rubies/ruby-1.8.7-p358/lib -L. -rdynamic -Wl,-export-dynamic -lruby-static -ltrue -lrt -ldl -lcrypt -lm -lc"
conftest.c: In function ‘t’:
conftest.c:3: error: ‘magic_open’ undeclared (first use in this function)
conftest.c:3: error: (Each undeclared identifier is reported only once
conftest.c:3: error: for each function it appears in.)
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { void ((*volatile p)()); p = (void ((*)()))magic_open; return 0; }
/* end */
"gcc -o conftest -I. -I/usr/local/rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/x86_64-linux -I. -g -O2 -fPIC conftest.c -L. -L/usr/local/rvm/rubies/ruby-1.8.7-p358/lib -Wl,-R/usr/local/rvm/rubies/ruby-1.8.7-p358/lib -L. -rdynamic -Wl,-export-dynamic -lruby-static -ltrue -lrt -ldl -lcrypt -lm -lc"
/usr/bin/ld: cannot find -ltrue
collect2: ld returned 1 exit status
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { magic_open(); return 0; }
/* end */
我想不出该怎么做才能让这个东西正常工作。
checking for magic_open() in -lmagic... no有什么想法吗？ - AJPls -al /usr/local/include/|grep magic命令并验证是否存在magic.h文件。 - troelskn