Cross compilation

Fri Nov 10 02:56:00 GMT 2017

Hi GNU Team,

Could you please guide me regarding cross compilation.

I am trying to cross compile the toolchain for FreeBSD11(target) using
Ubuntu16.04(host).

The issue is
"/home/rdewangan/freebsd/gcc-7.2.0/build/gcc/include/stddef.h:56:10: fatal
error: sys/_types.h: No such file or directory
 #include <sys/_types.h>
          ^~~~~~~~~~~~~~
compilation terminated.
Makefile:491: recipe for target '_muldi3.o' failed"

The details of the error message is given below

make[3]: Leaving directory
'/home/rdewangan/freebsd/gcc-7.2.0/build/x86_64-pc-freebsd11/libgcc'
ln -s ../../../libgcc/enable-execute-stack-mprotect.c enable-execute-stack.c
ln -s ../../../libgcc/unwind-generic.h unwind.h
ln -s ../../../libgcc/config/i386/freebsd-unwind.h md-unwind-support.h
ln -s ../../../libgcc/config/i386/sfp-machine.h sfp-machine.h
ln -s ../../../libgcc/gthr-posix.h gthr-default.h
DEFINES='' HEADERS='' \
        ../../../libgcc/mkheader.sh > tmp-libgcc_tm.h
/bin/bash ../../../libgcc/../move-if-change tmp-libgcc_tm.h libgcc_tm.h
echo timestamp > libgcc_tm.stamp
/home/rdewangan/freebsd/gcc-7.2.0/build/./gcc/xgcc
-B/home/rdewangan/freebsd/gcc-7.2.0/build/./gcc/
-B/opt/freebsd_toolchain/x86_64-pc-freebsd11/bin/
-B/opt/freebsd_toolchain/x86_64-pc-freebsd11/lib/ -isystem
/opt/freebsd_toolchain/x86_64-pc-freebsd11/include -isystem
/opt/freebsd_toolchain/x86_64-pc-freebsd11/sys-include    -g -O2 -O2  -g
-O2 -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE  -W -Wall -Wno-narrowing
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition  -isystem ./include   -fpic -pthread -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -Dinhibit_libc  -fpic -pthread -I.
-I. -I../.././gcc -I../../../libgcc -I../../../libgcc/.
-I../../../libgcc/../gcc -I../../../libgcc/../include  -DHAVE_CC_TLS  -o
_muldi3.o -MT _muldi3.o -MD -MP -MF _muldi3.dep -DL_muldi3 -c
../../../libgcc/libgcc2.c -fvisibility=hidden -DHIDE_EXPORTS
In file included from ../../../libgcc/../gcc/tsystem.h:44:0,
                 from ../../../libgcc/libgcc2.c:27:
/home/rdewangan/freebsd/gcc-7.2.0/build/gcc/include/stddef.h:56:10: fatal
error: sys/_types.h: No such file or directory
 #include <sys/_types.h>
          ^~~~~~~~~~~~~~
compilation terminated.
Makefile:491: recipe for target '_muldi3.o' failed
make[2]: *** [_muldi3.o] Error 1
make[2]: Leaving directory
'/home/rdewangan/freebsd/gcc-7.2.0/build/x86_64-pc-freebsd11/libgcc'
Makefile:12571: recipe for target 'all-target-libgcc' failed
make[1]: *** [all-target-libgcc] Error 2
make[1]: Leaving directory '/home/rdewangan/freebsd/gcc-7.2.0/build'
Makefile:892: recipe for target 'all' failed
make: *** [all] Error 2

List of command followed as per "
https://linux-tips.com/t/how-to-build-a-freebsd-toolchain-for-linux/288"

 1225  sudo wget http://ftp.gnu.org/gnu/binutils/binutils-2.29.tar.xz
 1226  tar xf binutils-2.29.tar.xz
 1227  s
 1228  ls
 1229  cd binutils-2.29/
 1230  ./configure --enable-libssp --enable-gold --enable-ld
--target=x86_64-pc-freebsd11 --prefix=/opt/freebsd_toolchain
 1231  sudo ./configure --enable-libssp --enable-gold --enable-ld
--target=x86_64-pc-freebsd11 --prefix=/opt/freebsd_toolchain
 1232  sudo make
 1233  sudo make install
 1234  sudo mkdir /opt/freebsd_toolchain/x86_64-pc-freebsd11/include
 1235  sudo mkdir /opt/freebsd_toolchain/x86_64-pc-freebsd11/lib
 1236  cd ../
 1237  ls
 1238  cd mainfiles/
 1239  ls
 1240  cd lib/
 1241  ls
 1242  cp -R * /opt/freebsd_toolchain/x86_64-pc-freebsd11/lib/
 1243  sudo cp -R * /opt/freebsd_toolchain/x86_64-pc-freebsd11/lib/
 1244  cd ..
 1245  ls
 1246  sudo cp crt* libc.* libm.* libpthread.so
/opt/freebsd_toolchain/x86_64-pc-freebsd11/lib/
 1247  cd include/
 1248  sudo cp -R * /opt/freebsd_toolchain/x86_64-pc-freebsd11/include/
 1249  cd ..
 1250  ls
 1251  sudo wget http://ftp.gnu.org/gnu/gmp/gmp-6.1.2.tar.xz
 1252  tar xf gmp-6.1.2.tar.xz
 1253  cd gmp-6.1.2/
 1254  sudo ./configure --prefix=/opt/freebsd_toolchain --enable-shared
--enable-static --enable-mpbsd --enable-fft --enable-cxx
--host=x86_64-pc-freebsd11
 1255  sudo make
 1256  sudo make install
 1257  sudo make check
 1258  cd ..
 1259  sudo wget http://ftp.gnu.org/gnu/mpfr/mpfr-3.1.6.tar.xz
 1260  tar xf mpfr-3.1.6.tar.xz
 1261  cd mpfr-3.1.6/
 1262  ./configure --prefix=/opt/freebsd_toolchain --with-gnu-ld
--with-gmp=/opt/freebsd_toolchain --enable-static --enable-shared
--host=x86_64-pc-freebsd11
 1263  sudo make
 1264  sudo make install
 1265  sudo wget http://ftp.gnu.org/gnu/mpc/mpc-1.0.3.tar.gz
 1266  tar xf mpc-1.0.3.tar.gz
 1267  cd mpc-1.0.3/
 1268  sudo ./configure --prefix=/opt/freebsd_toolchain --with-gnu-ld
--with-gmp=/opt/freebsd_toolchain --with-mpfr=/opt/freebsd_toolchain
--enable-static --enable-shared --host=x86_64-pc-freebsd11
 1269  sudo make
 1270  sudo make install
 1271  cd ..
 1272  ls
 1273  sudo mv mpc-1.0.3* ../
 1274  ls
 1275  cd ..
 1276  ls
 1277  sudo wget http://ftp.gnu.org/gnu/gcc/gcc-7.2.0/gcc-7.2.0.tar.xz
 1278  ls
 1279  tar xf gcc-7.2.0.tar.xz
 1280  cd gcc-7.2.0/
 1281  sudo mkdir build
 1282  cd build/
 1283  sudo ../configure --without-headers --with-gnu-as --with-gnu-ld
--enable-languages=c,c++ --disable-nls --enable-libssp --enable-gold
--enable-ld --target=x86_64-pc-freebsd11 --prefix=/opt/freebsd_toolchain
--with-gmp=/opt/freebsd_toolchain --with-mpc=/opt/freebsd_toolchain
--with-mpfr=/opt/freebsd_toolchain --disable-libgomp
 1284  sudo LD_LIBRARY_PATH=/opt/freebsd_toolchain/lib make

Thanks & Regards,
Ravi Dewangan