have_header: checking for vm_core.h... -------------------- no

"gcc -o conftest -I/usr/include/ruby-1.9.1/i686-linux -I/usr/include/ruby-1.9.1/ruby/backward -I/usr/include/ruby-1.9.1 -I.  -D_FILE_OFFSET_BITS=64  -march=i686 -mtune=generic -O2 -pipe -O2 -g -Wall -Wno-parentheses  -fPIC conftest.c  -L. -L/usr/lib -Wl,-R/usr/lib -L. -Wl,--hash-style=gnu -Wl,--as-needed -rdynamic -Wl,-export-dynamic     -Wl,-R -Wl,/usr/lib -L/usr/lib -lruby-static  -lpthread -lrt -ldl -lcrypt -lm   -lc"
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: int main() {return 0;}
/* end */

"gcc -E -I/usr/include/ruby-1.9.1/i686-linux -I/usr/include/ruby-1.9.1/ruby/backward -I/usr/include/ruby-1.9.1 -I.  -D_FILE_OFFSET_BITS=64  -march=i686 -mtune=generic -O2 -pipe -O2 -g -Wall -Wno-parentheses  -fPIC  conftest.c -o conftest.i"
conftest.c:3:21: erreur: vm_core.h : Aucun fichier ou dossier de ce type
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <vm_core.h>
/* end */

--------------------

have_header: checking for vm_core.h... -------------------- no

"gcc -E -I/usr/include/ruby-1.9.1/i686-linux -I/usr/include/ruby-1.9.1/ruby/backward -I/usr/include/ruby-1.9.1 -I. -I/usr/include/ruby-1.9.1/ruby-1.9.1-p243 -march=i686 -mtune=generic -O2 -pipe -O2 -g -Wall -Wno-parentheses  -fPIC  conftest.c -o conftest.i"
conftest.c:3:21: erreur: vm_core.h : Aucun fichier ou dossier de ce type
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <vm_core.h>
/* end */

--------------------