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From: "mario_grgic at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/95011] New: Error building gcc 10.1.0 on macOS Catalina with
 Xcode 11.4.1
Date: Fri, 08 May 2020 14:46:42 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95011

            Bug ID: 95011
           Summary: Error building gcc 10.1.0 on macOS Catalina with Xcode
                    11.4.1
           Product: gcc
           Version: 10.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mario_grgic at hotmail dot com
  Target Milestone: ---

Created attachment 48484
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D48484&action=3Dedit
config.log

I am attempting to build gcc 10.1.0 from source with Xcode 11.4.1 on macOS
Catalina 10.15.4.

I configure the build as follows:=20

export PREFIX=3D/usr/local

../configure --prefix=3D${PREFIX} --with-gmp=3D${PREFIX} --with-mpfr=3D${PR=
EFIX}
--with-mpc=3D${PREFIX} --with-isl-prefix=3D${PREFIX} --with-cloog=3D${PREFI=
X}
--enable-checking=3Drelease --enable-languages=3Dc,c++,fortran
--with-build-sysroot=3D/Applications/Xcode.app/Contents/Developer/Platforms=
/MacOSX.platform/Developer/SDKs/MacOSX.sdk=20


But this eventually leads to:=20

/lib/cpp
configure: error: in `/Volumes/ramdisk/gcc-10.1.0/build/gcc':
configure: error: C++ preprocessor "/lib/cpp" fails sanity check
See `config.log' for more details

...

config.status: executing default commands
make[1]: *** [stage2-bubble] Error 2
make: *** [all] Error 2


config.log is attached.

In the config.log I see:

xgcc: error: unrecognized command-line option '-V'

and=20

xgcc: error: unrecognized command-line option '-qversion'; did you mean
'--version'?


But more importantly:

/Volumes/ramdisk/gcc-10.1.0/build/prev-gcc/include-fixed/limits.h:195:15: f=
atal
error: limits.h: No such file or directory=