/usr/include/features.h:424:12: fatal error: sys/cdefs.h

[ghost]

Hi,

I have a raspberry pi 4 8Gb running raspbian 64 bits (Buster):

pi@jarvis2:/Dev $ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 10 (buster)
Release: 10
Codename: buster
pi@jarvis2:/Dev $ uname -a
Linux jarvis2 5.10.5-v8+ #1392 SMP PREEMPT Sat Jan 9 18:56:30 GMT 2021 aarch64 GNU/Linux

(I have downloaded native-gcc-10.2.0-pi_64.tar.gz)

sudo tar xvf ~/Downloads/native-gcc-10.2.0-pi_64.tar.gz -C /opt/
sudo mv /opt/native-pi-gcc-10.2.0-64 /opt/gcc-10.2.0
echo 'export PATH=/opt/gcc-10.2.0/bin:$PATH' >> ~/.bashrc
echo 'export LD_LIBRARY_PATH=/opt/gcc-10.2.0/lib:$LD_LIBRARY_PATH' >> ~/.bashrc
. ~/.bashrc

then I try to compile the following file :

`#include

int main() {
// if block with init-statement:
if(int a = 5; a < 8) {
std::cout << "Local variable a is < 8\n";
} else {
std::cout << "Local variable a is >= 8\n";
}
return 0;
}`
pi@jarvis2:~/Dev $ g++-10.2.0 -std=c++17 -Wall -pedantic if_test.cpp -o if_test
In file included from /opt/gcc-10.2.0/include/c++/10.2.0/aarch64-linux-gnu/bits/os_defines.h:39,
from /opt/gcc-10.2.0/include/c++/10.2.0/aarch64-linux-gnu/bits/c++config.h:518,
from /opt/gcc-10.2.0/include/c++/10.2.0/iostream:38,
from if_test.cpp:1:
/usr/include/features.h:424:12: fatal error: sys/cdefs.h: Aucun fichier ou dossier de ce type
424 | # include <sys/cdefs.h>

[abhiTronix]

I have a raspberry pi 4 8Gb running raspbian 64 bits (Buster)

@vrichomme Support for Raspberry Pi 4 (Buster 64bit) is still in development. Wait for PR #62 to be merged or compile it manually on a Linux system as follows:

# update your system
sudo apt update && sudo apt dist-upgrade

# install prerequisites
sudo apt-get -y install gcc g++ gperf flex texinfo gawk gfortran texinfo bison \
    build-essential openssl unzip wget git pigz \
    libncurses-dev autoconf automake tar figlet

# clone patch
git clone https://github.com/abhiTronix/raspberry-pi-cross-compilers.git && cd raspberry-pi-cross-compilers
git checkout patch@buildscript

# and compile binary:
cd build-scripts
./RTBuilder_64b -g "10.2.0" -o "buster"

[ghost]

Do I need to run it on the raspbian or on a x86_64 host ?
Because on the raspi I don't understand why it recompiles gcc-8.3 when it's already available on the system ?
And the first time I run the script I had an error and the second times I thought it would display the same error but now it's starting again from zero I think...

[abhiTronix]

Yeah obviously you'll need any x86_64 linux machine/system to cross-compile for raspberry pi. You can't cross-compile for raspberry pi itself.

[abhiTronix]

Script will generate two files: native-gcc-{GCC_VERSION}-pi_64.tar.gz and cross-gcc-{GCC_VERSION}-pi_64.tar.gz at your $HOME director of x86_64 linux machine. Use native-gcc-{GCC_VERSION}-pi_64.tar.gz on your pi4.

[ghost]

Ok I compiled the native and copied it but still the same error...
Maybe something wrong with my install or I should go back to raspbian 32 bits,i don't know
Would it be possible to add the possiblity to compile gcc directly on the raspi ? I don't care if it takes 2 days.
When I compare with the official gcc I can see some differences:
pi@jarvis2:~/Dev $ gcc-10.2.0 -v -v
Using built-in specs.
COLLECT_GCC=gcc-10.2.0
COLLECT_LTO_WRAPPER=/opt/gcc-10.2.0/bin/../libexec/gcc/aarch64-linux-gnu/10.2.0/lto-wrapper
Target: aarch64-linux-gnu
Configured with: ../configure --prefix= --build=x86_64-pc-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu --enable-languages=c,c++,fortran --with-arch=armv8-a+fp+simd --disable-multilib --program-suffix=-10.2.0
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 10.2.0 (GCC)

pi@jarvis2:~/Dev $ gcc -v -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/aarch64-linux-gnu/8/lto-wrapper
Target: aarch64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 8.3.0-6' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --program-prefix=aarch64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libquadmath --disable-libquadmath-support --enable-plugin --enable-default-pie --with-system-zlib --disable-libphobos --enable-multiarch --enable-fix-cortex-a53-843419 --disable-werror --enable-checking=release --build=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu
Thread model: posix
gcc version 8.3.0 (Debian 8.3.0-6)

[abhiTronix]

@vrichomme Did you setup the important symbolic links as mentioned in wiki docs :

 sudo ln -sf /usr/include/aarch64-linux-gnu/asm/* /usr/include/asm
 sudo ln -sf /usr/include/aarch64-linux-gnu/gnu/* /usr/include/gnu
 sudo ln -sf /usr/include/aarch64-linux-gnu/bits/* /usr/include/bits
 sudo ln -sf /usr/include/aarch64-linux-gnu/sys/* /usr/include/sys
 sudo ln -sf /usr/include/aarch64-linux-gnu/openssl/* /usr/include/openssl
 sudo ln -sf /usr/lib/aarch64-linux-gnu/crtn.o /usr/lib/crtn.o
 sudo ln -sf /usr/lib/aarch64-linux-gnu/crt1.o /usr/lib/crt1.o
 sudo ln -sf /usr/lib/aarch64-linux-gnu/crti.o /usr/lib/crti.o

[ghost]

My bad. now it works. Sorry for the noise.
However I had to remove the /* when creating the symbolic link

[abhiTronix]

@vrichomme Idk sometimes we need /* and other times we don't. I'll look into this.

[abhiTronix]

@vrichomme Ok these are new commands:

 sudo ln -sf /usr/include/aarch64-linux-gnu/asm/* /usr/include/asm/
 sudo ln -sf /usr/include/aarch64-linux-gnu/gnu/* /usr/include/gnu/
 sudo ln -sf /usr/include/aarch64-linux-gnu/bits/* /usr/include/bits/
 sudo ln -sf /usr/include/aarch64-linux-gnu/sys/* /usr/include/sys/
 sudo ln -sf /usr/include/aarch64-linux-gnu/openssl/* /usr/include/openssl/
 sudo ln -sf /usr/lib/aarch64-linux-gnu/crtn.o /usr/lib/crtn.o
 sudo ln -sf /usr/lib/aarch64-linux-gnu/crt1.o /usr/lib/crt1.o
 sudo ln -sf /usr/lib/aarch64-linux-gnu/crti.o /usr/lib/crti.o