[Bug preprocessor/85211] -isystem automatically adds extern "C" to includes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85211 Jonathan Wakely changed: What|Removed |Added Keywords||documentation Status|UNCONFIRMED |NEW Last reconfirmed||2018-04-09 Ever confirmed|0 |1 --- Comment #8 from Jonathan Wakely --- (In reply to blastrock from comment #7) > My initial suggestion was to mention that behavior in the documentation, but > if you think it is not worth it, I guess you can close this bug. I'm not sure why it's no longer mentioned, so I'll confirm this as a doc bug.
[Bug preprocessor/85211] -isystem automatically adds extern "C" to includes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85211 --- Comment #7 from blastrock at free dot fr --- You are right, my bad. I managed to build it by adding the definition in gcc/config/arm/arm.h . My initial suggestion was to mention that behavior in the documentation, but if you think it is not worth it, I guess you can close this bug. Thanks anyway for your help!
[Bug preprocessor/85211] -isystem automatically adds extern "C" to includes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85211 --- Comment #6 from Jonathan Wakely --- (In reply to blastrock from comment #5) > So is this a regression since #37727 was fixed? PR 37727 is not fixed, it's still NEW.
[Bug preprocessor/85211] -isystem automatically adds extern "C" to includes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85211 --- Comment #5 from blastrock at free dot fr --- I tried using their recipe to rebuild gcc. The configure line is the following: $ /media/usb1/vitasdkbuild/build/gcc-final-prefix/src/gcc-final/configure --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=arm-vita-eabi --prefix=/media/usb1/vitasdkbuild/build/vitasdk --libdir=/media/usb1/vitasdkbuild/build/vitasdk/lib --libexecdir=/media/usb1/vitasdkbuild/build/vitasdk/lib --with-sysroot=/media/usb1/vitasdkbuild/build/vitasdk/arm-vita-eabi --with-gmp=/media/usb1/vitasdkbuild/build/deps_build --with-mpfr=/media/usb1/vitasdkbuild/build/deps_build --with-mpc=/media/usb1/vitasdkbuild/build/deps_build --with-isl=/media/usb1/vitasdkbuild/build/deps_build --with-libelf=/media/usb1/vitasdkbuild/build/deps_build --with-python-dir=share/gcc-arm-vita-eabi --enable-languages=c,c++ --disable-decimal-float --disable-libffi --disable-libgomp --disable-libmudflap --disable-libquadmath --disable-libssp --disable-libstdcxx-pch --disable-nls --disable-shared --disable-tls --with-gnu-as --with-gnu-ld --with-newlib --disable-multilib --with-arch=armv7-a --with-tune=cortex-a9 --with-fpu=neon --with-float=hard --with-mode=thumb --with-pkgversion=GNU Tools for ARM Embedded Processors --with-host-libstdcxx=-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm --with-headers=yes --enable-threads=posix You can see --with-newlib in there. However I can confirm that NO_IMPLICIT_EXTERN_C is not defined as I tried inserting broken code in the #ifndef NO_IMPLICIT_EXTERN_C in parser.c and it did break compilation. So is this a regression since #37727 was fixed?
[Bug preprocessor/85211] -isystem automatically adds extern "C" to includes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85211 --- Comment #4 from Jonathan Wakely --- (In reply to blastrock from comment #2) > And I was hoping for a way to disable it at runtime, recompiling > gcc seems quite complex... That's not possible.
[Bug preprocessor/85211] -isystem automatically adds extern "C" to includes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85211 --- Comment #3 from Andrew Pinski --- (In reply to blastrock from comment #2) > I think it would be nice to mention it in the documentation as it was in > version 6. And I was hoping for a way to disable it at runtime, recompiling > gcc seems quite complex... That seems like their target arm-vita-eabi should have it disabled anyways. For all newlib targets, NO_IMPLICIT_EXTERN_C should be defined. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37727 also. And https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57699 .
[Bug preprocessor/85211] -isystem automatically adds extern "C" to includes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85211 --- Comment #2 from blastrock at free dot fr --- I think it would be nice to mention it in the documentation as it was in version 6. And I was hoping for a way to disable it at runtime, recompiling gcc seems quite complex...
[Bug preprocessor/85211] -isystem automatically adds extern "C" to includes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85211 --- Comment #1 from Jonathan Wakely --- This behaviour is target-dependent. If the target defines NO_IMPLICIT_EXTERN_C then it doesn't happen.
