gengtype-lex.c: No such file or directory

[gopherbot]

by grizzlysmit:

I am following the steps on this page 
http://golang.org/doc/gccgo_install.html  

like so 

svn checkout svn://gcc.gnu.org/svn/gcc/branches/gccgo gccgo
mkdir objdir
cd objdir
../gccgo/configure --enable-languages=c,c++,go
make
make install
 my error occurs in make

gcc -c  -g -fkeep-inline-functions -DIN_GCC  -DGO_DEBUGGING_INFO  -W -Wall
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Wold-style-definition -Wc++-compat -fno-common
-Wno-error -DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I../../gccgo/gcc
-I../../gccgo/gcc/build -I../../gccgo/gcc/../include
-I../../gccgo/gcc/../libcpp/include  -I../../gccgo/gcc/../libdecnumber
-I../../gccgo/gcc/../libdecnumber/bid -I../libdecnumber     \
        -o build/gengtype-lex.o gengtype-lex.c
gcc: gengtype-lex.c: No such file or directory
gcc: no input files
make[3]: *** [build/gengtype-lex.o] Error 1
make[3]: Leaving directory `/home/grizzlysmit/Projects/go/objdir/gcc'
make[2]: *** [all-stage1-gcc] Error 2
make[2]: Leaving directory `/home/grizzlysmit/Projects/go/objdir'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/home/grizzlysmit/Projects/go/objdir'
make: *** [all] Error 2
me@mybox:~/Projects/go/objdir$ 
looks like a key file isn't making it to subversion

[robpike]

Comment 1:

Owner changed to i...@golang.org.

Status changed to Accepted.

[ianlancetaylor]

Comment 2:

You need to install the flex program, rm config.cache gcc/config.cache, and rerun the 
configure script.
The full set of prerequisites for building gcc can be found at 
http://gcc.gnu.org/install/ .

Status changed to WontFix.