I'm trying to install tmail in macruby 0.6. While building the native extensions, I get the following. Ideas? Building native extensions. This could take a while... ERROR: Error installing tmail: make failed: ["/Library/Frameworks/MacRuby.framework/Versions/0.6/usr/bin/macruby extconf.rb", "creating Makefile\n", "make", "/usr/bin/gcc -I. -I/Library/Frameworks/MacRuby.framework/Versions/0.6/usr/include/ruby-1.9.0/universal-darwin10.0 -I/Library/Frameworks/MacRuby.framework/Versions/0.6/usr/include/ruby-1.9.0/ruby/backward -I/Library/Frameworks/MacRuby.framework/Versions/0.6/usr/include/ruby-1.9.0 -I. -fno-common -fexceptions -fno-common -pipe -O3 -g -Wall -Wno-parentheses -D_FILE_OFFSET_BITS=64 -arch i386 -arch x86_64 -o tmailscanner.o -c tmailscanner.c\ntmailscanner.c:32:16: error: re.h: No such file or directory\ntmailscanner.c: In function 'mails_s_new':\ntmailscanner.c:93: warning: assignment discards qualifiers from pointer target type\ntmailscanner.c: In function 'skip_japanese_string':\ntmailscanner.c:218: warning: implicit declaration of function 'ismbchar'\ntmailscanner.c:219: warning: implicit declaration of function 'mbclen'\ntmailscanner.c: In function 'digit_p':\ntmailscanner.c:410: warning: assignment discards qualifiers from pointer target type\ntmailscanner.c: In function 'atomsym':\ntmailscanner.c:430: warning: initialization discards qualifiers from pointer target type\ntmailscanner.c:32:16: error: re.h: No such file or directory\ntmailscanner.c: In function 'mails_s_new':\ntmailscanner.c:93: warning: assignment discards qualifiers from pointer target type\ntmailscanner.c: In function 'skip_japanese_string':\ntmailscanner.c:218: warning: implicit declaration of function 'ismbchar'\ntmailscanner.c:219: warning: implicit declaration of function 'mbclen'\ntmailscanner.c: In function 'digit_p':\ntmailscanner.c:410: warning: assignment discards qualifiers from pointer target type\ntmailscanner.c: In function 'atomsym':\ntmailscanner.c:430: warning: initialization discards qualifiers from pointer target type\nlipo: can't open input file: /var/tmp//ccheFt8w.out (No such file or directory)\nmake: *** [tmailscanner.o] Error 1\n"] ----- Brian Marick, independent consultant Mostly on agile methods with a testing slant Author of /Programming Cocoa with Ruby/ www.exampler.com, www.exampler.com/blog, www.twitter.com/marick