Archive for September, 2010

I installed ruby 1.9.2 and had a problem with rubygems.

[root@server]# gem list
ERROR:  Loading command: list (LoadError)
    no such file to load -- zlib
ERROR:  While executing gem ... (NameError)
    uninitialized constant Gem::Commands::ListCommand

To fix, I had to:

yum install zlib-devel

And then go back to the ruby source code and in ~/ruby-1.9.2-p0/ext/zlib, run the following:

[root@server zlib]# ruby extconf.rb

checking for deflateReset() in -lz... yes

checking for zlib.h... yes

checking for kind of operating system... Unix

checking for crc32_combine() in zlib.h... yes

checking for adler32_combine() in zlib.h... yes

creating Makefile

[root@server zlib]# make

gcc -I. -I/usr/local/include/ruby-1.9.1/i686-linux -I/usr/local/include/ruby-1.9.1/ruby/backward -I/usr/local/include/ruby-1.9.1 -I. -DHAVE_ZLIB_H  -DOS_CODE=OS_UNIX -DHAVE_CRC32_COMBINE -DHAVE_ADLER32_COMBINE  -D_FILE_OFFSET_BITS=64  -fPIC -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long  -o zlib.o -c zlib.c

gcc -shared -o zlib.so zlib.o -L. -L/usr/local/lib -Wl,-R/usr/local/lib -L.  -rdynamic -Wl,-export-dynamic   -lz  -lpthread -lrt -ldl -lcrypt -lm   -lc

[root@server zlib]# make install

/usr/bin/install -c -m 0755 zlib.so /usr/local/lib/ruby/site_ruby/1.9.1/i686-linux

Posted by Mary Heintz on September 15, 2010 at 1:13 pm under Commands, Installation, Ruby.
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