A substantial number of Ruby Gem packages are written in Ruby itself and install quite neatly using a simple
gem install command. However, a number of Gem packages are partly written in C and require some compilation during installation (e.g. hpricot, fastthread and mongrel). This requires you to have a C compiler on the system where you are installing the packages, which is a real pain, but that’s a gripe for another day.
We recently upgraded to CoolStack 1.2 but when we tried to install the Gem packages above, we ran into trouble when the installer attempted to compile the native code for the package. The compiler (Sun Studio 11) complained about the definition of the
NORETURN macro in
/opt/coolstack/lib/ruby/1.8/i386-solaris2.10/config.h as follows:
syntax error before or at: __attribute__
warning: old-style declaration or incorrect type for:
warning: syntax error: empty declaration
cc: acomp failed for hpricot_scan.c
It turns out that the new version of Ruby (1.8.6) that is included with CoolStack 1.2 contains some GCC-oriented macro definitions that Sun Studio 11 does not support. The solution was to upgrade to Studio 12.
Huge thanks go to Basantk for helping to resolve this.