Thanks Jonathan. I tried, and it does not work, I still get the same error:
Making all in include
mkdir -p ./x86_64-apple-darwin17.0.0/bits/stdc++.h.gch
mkdir -p ./x86_64-apple-darwin17.0.0/bits/stdc++.h.gch
/Users/fx/devel/gcc/ibin/./gcc/xgcc -shared-libgcc
-B/Users/fx/devel/gcc/ibin/./gcc -nostdinc++
-L/Users/fx/devel/gcc/ibin/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/src
-L/Users/fx/devel/gcc/ibin/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/src/.libs
-L/Users/fx/devel/gcc/ibin/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/libsupc++/.libs
-B/Users/fx/devel/gcc/irun/x86_64-apple-darwin17.0.0/bin/
-B/Users/fx/devel/gcc/irun/x86_64-apple-darwin17.0.0/lib/ -isystem
/Users/fx/devel/gcc/irun/x86_64-apple-darwin17.0.0/include -isystem
/Users/fx/devel/gcc/irun/x86_64-apple-darwin17.0.0/sys-include -m32 -x
c++-header -nostdinc++ -g -O2 -m32
-I/Users/fx/devel/gcc/ibin/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/include/x86_64-apple-darwin17.0.0
-I/Users/fx/devel/gcc/ibin/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/include
-I/Users/fx/devel/gcc/trunk/libstdc++-v3/libsupc++ -O2 -g -std=gnu++0x
/Users/fx/devel/gcc/trunk/libstdc++-v3/include/precompiled/stdc++.h \
-o x86_64-apple-darwin17.0.0/bits/stdc++.h.gch/O2ggnu++0x.gch
/Users/fx/devel/gcc/ibin/./gcc/xgcc -shared-libgcc
-B/Users/fx/devel/gcc/ibin/./gcc -nostdinc++
-L/Users/fx/devel/gcc/ibin/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/src
-L/Users/fx/devel/gcc/ibin/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/src/.libs
-L/Users/fx/devel/gcc/ibin/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/libsupc++/.libs
-B/Users/fx/devel/gcc/irun/x86_64-apple-darwin17.0.0/bin/
-B/Users/fx/devel/gcc/irun/x86_64-apple-darwin17.0.0/lib/ -isystem
/Users/fx/devel/gcc/irun/x86_64-apple-darwin17.0.0/include -isystem
/Users/fx/devel/gcc/irun/x86_64-apple-darwin17.0.0/sys-include -m32 -x
c++-header -nostdinc++ -g -O2 -m32
-I/Users/fx/devel/gcc/ibin/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/include/x86_64-apple-darwin17.0.0
-I/Users/fx/devel/gcc/ibin/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/include
-I/Users/fx/devel/gcc/trunk/libstdc++-v3/libsupc++ -O2 -g
/Users/fx/devel/gcc/trunk/libstdc++-v3/include/precompiled/stdc++.h -o
x86_64-apple-darwin17.0.0/bits/stdc++.h.gch/O2g.gch
/Users/fx/devel/gcc/trunk/libstdc++-v3/include/precompiled/stdc++.h:44:10:
fatal error: cstdarg: No such file or directory
#include <cstdarg>
^~~~~~~~~
compilation terminated.
make[7]: *** [x86_64-apple-darwin17.0.0/bits/stdc++.h.gch/O2ggnu++0x.gch] Error
1
