ruby - Mountain Lion rvm install 1.8.7 x11 error

Question

After update to Mountain Lion, I tried install 1.8.7, and I got error. X11 file not found, I installed Xquarkz, but nothing changed. Whats wrong?

Fail to find [tclConfig.sh, tkConfig.sh]
Use MacOS X Frameworks.

Find Tcl/Tk libraries. Make tcltklib.so which is required by Ruby/Tk.
clang -I. -I../.. -I../../. -I../.././ext/tk -DHAVE_RB_SAFE_LEVEL -DHAVE_RB_HASH_LOOKUP -DHAVE_RB_PROC_NEW -DHAVE_RB_OBJ_TAINT -DHAVE_ST_PTR -DHAVE_ST_LEN -DRUBY_VERSION="1.8.7" -DRUBY_RELEASE_DATE="2012-06-29"  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -DWITH_TCL_ENABLE_THREAD=0 -fno-common -g -O2  -fno-common -pipe -fno-common   -c stubs.c
In file included from stubs.c:10:
/usr/include/tk.h:78:11: fatal error: 'X11/Xlib.h' file not found
#       include <X11/Xlib.h>
                ^
1 error generated.
make[1]: *** [stubs.o] Error 1
make: *** [all] Error 1

Answer 1

Try to install X11 via http://xquartz.macosforge.org/landing/ set the correct path to the X11 library for the compiler with:

export CPPFLAGS=-I/opt/X11/include

then try to reinstall ruby, passing to the compiler where gcc-4.2 is:

CC=/usr/local/bin/gcc-4.2 rvm reinstall 1.8.7

Without CC I got a lot of segmentation faults.