Oh...I'm so sorry. I've read these guides but I miss that I should go into the objdir to configure. Thanks! This time I got into the objdir and use: `./../gcc/configure --prefix=/usr/local/gcc --enable-languages=all --disable-multilib --disable-bootstrap` and I found the Makefile in my objdir directory. I try `make -j4` and found g++: error: gengtype-lex.c: No such file or directory g++: fatal error: no input files Could you help me with this? Beenle Yi yilu@xxxxxxxxxxx From: Jonathan Wakely Date: 2020-03-06 20:08 To: yilu@xxxxxxxxxxx CC: gcc-help Subject: Re: Install gcc On Fri, 6 Mar 2020 at 11:49, yilu@xxxxxxxxxxx <yilu@xxxxxxxxxxx> wrote: > > Hi, everybody. > I'm trying install gcc, with command: > > ./gcc/configure --prefix=/gccobj --disable-checking --enable-languages=all --disable-multilib --disable-bootstrap --with-gmp=/gmp --with-mpfr==/mpfr --with-mpc==/mpc This is a really really bad idea. The build will create a sub-directory called 'gcc' which is the directory where you have the source tree. https://gcc.gnu.org/install/configure.html says "First, we **highly** recommend that GCC be built into a separate directory from the sources which does **not** reside within the source tree." > (I've installed mpfr,mpc,gmp in the corresponding directory) My recommendation is that you don't do that either. See https://gcc.gnu.org/wiki/InstallingGCC > and I got this two information after a lot of checkings: > > configure: creating ./config.status > config.status: creating Makefile > > and then I try the command > > make -j4 > > and I got > > make[1]: Leaving directory '/root' > Makefile:959: recipe for target 'all' failed > make: *** [all] Error 2 This is completely usleless information. The error happened much earlier but you've just shown the very end of the output which says "there was an error"> > > I searched for FAQ, but cannot find an approach. What can I do in this situation? See https://gcc.gnu.org/wiki/InstallingGCC
