From: Jim Freeze <jim@...>
Date: 2006-01-31T07:00:29+09:00
Subject: extconf.rb not seeing readline.h

What does it take for extconf.rb to recognize readline.h?

extconf.rb seems blind to whatever I tell it.

Here, extconf.rb does not see readline.h:

	cd ext/readline
	% ../../ruby extconf.rb
	checking for tgetnum() in -lncurses... no
	checking for tgetnum() in -ltermcap... yes
	checking for readline/readline.h... no
	checking for editline/readline.h... no

Here, it is plainly visible in the directories it should be looking:

	% ../../ruby -r mkmf -e 'p Config::CONFIG["CPPFLAGS"]'
	"-I/TOOLS/dist/gnu-readline-5.1/sparc64-sun-solaris2.8/include/readline"
	% ../../ruby -r mkmf -e 'p Config::CONFIG["CFLAGS"]'
	"-I/TOOLS/dist/gnu-readline-5.1/sparc64-sun-solaris2.8/include/readline"
	% ../../ruby -r mkmf -e 'p Config::CONFIG["LDFLAGS"]'
	"-L/TOOLS/dist/gnu-readline-5.1/sparc64-sun-solaris2.8/lib"
	% ls -alF /TOOLS/dist/gnu-readline-5.1/sparc64-sun-solaris2.8/include/readline
	total 84
	drwxrwsr-x    2 jdf   jdf         4096 Jan 30 11:03 ./
	drwxrwsr-x    3 jdf   jdf         4096 Jan 30 11:03 ../
	-rw-r--r--    1 jdf   jdf        10207 Jan 30 11:03 history.h
	-rw-r--r--    1 jdf   jdf        34354 Jan 30 11:03 readline.h
	...
	
	% ls -alF /TOOLS/dist/gnu-readline-5.1/sparc64-sun-solaris2.8/lib
	total 2256
	drwxrwsr-x    2 jdf   jdf         4096 Jan 30 11:03 ./
	drwxrwsr-x    7 jdf   jdf         4096 Jan 30 11:03 ../
	...
	-rw-r--r--    1 jdf   jdf      1053548 Jan 30 11:03 libreadline.a
	lrwxrwxrwx    1 jdf   jdf           16 Jan 30 11:03 libreadline.so ->
libreadline.so.5
	-rw-r--r--    1 jdf   jdf       917076 Jan 30 11:03 libreadline.so.5

Can someone splain why? ;)

--
Jim Freeze