Help installing ffi gem #1611

kaushalmodi opened this Issue Jul 21, 2014 · 0 comments


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I have the ffi library installed in a folder in my home directory as I don't have root access to the machine on which I am trying to install octopress. I was able to sucessfully install older version of octopress. But the latest version needs few more gems to be installed and ffi is the only gem I am having trouble installing.

I get the following mkmf.log when doing gem install ffi:

"gcc -o conftest -I/home/kmodi/usr_local/include/ruby-2.1.0/x86_64-linux -I/home/kmodi/usr_local/include/ruby-2.1.0/ruby/backward -I/home/kmodi/usr_local/include/ruby-2.1.0 -I.     -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration conftest.c  -L. -L/home/kmodi/usr_local/lib -Wl,-R/home/kmodi/usr_local/lib -L/home/kmodi/usr_local/lib -lffi     -Wl,-R -Wl,/home/kmodi/usr_local/lib -L/home/kmodi/usr_local/lib -lruby-static  -lpthread -lrt -lgmp -ldl -lcrypt -lm   -lc"
/usr/bin/ld: cannot find -lffi
collect2: ld returned 1 exit status
checked program was:
/* begin */
1: #include "ruby.h"
3: int main(int argc, char **argv)
4: {
5:   return 0;
6: }
/* end */

The error says that lffi is not found. But ffi.h actually exists in ~/usr_local/lib/libffi-3.0.13/include/ffi.h and I also have ~/usr_local/lib/pkgconfig/libffi.pc.

How do I make gem install look for ffi in that location?

I understand that this issue is not octopress related but I'd appreciate if someone could help me out.


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