Hello all, I am trying to cross-compile the boost libraries for an ARM based linux system. The system is an FX30 IoT gateway by Sierra Wireless. It comes with a dedicated, Eclipse based, development studio, which supplies the cross-compiler & a disk image with all the required headers & libraries to cross-compile to. For starters, I've created a user-config.jam file in my home directory with the following contents (my apologies on this being a bit hard to read, I had to use absolute paths or else the cross-compiler would complain): using gcc : arm : /home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++ : <cxxflags>--sysroot=/home/developer /legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/armv7a-vfp-neon-poky-linux-gnueabi <include>~/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/armv7a-vfp-neon-poky-linux-gnueabi <linkflags>-L/home/developer /legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/armv7a-vfp-neon-poky-linux-gnueabi/usr/lib -L/home/developer /legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/armv7a-vfp-neon-poky-linux-gnueabi/usr/local/lib <compileflags>-v ; As you can see I've set the sysroot to the directory that is the / directory of the disk image. I've also set library paths to the disk image's /usr/lib & /usr/local/lib directories. I also tried several variations on setting the include path to point to the disk image, but I run into issues when compiling the boost libraries. When the compiler hits the alloc_lib.c file, it errors out on: COLLECT_GCC=/home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++ Target: arm-poky-linux-gnueabi Configured with: /work/build_src/tmp/work-shared/gcc-4.9.1-r0/gcc-4.9.1/configure --build=x86_64-linux --host=x86_64-pokysdk-linux --target=arm-poky-linux-gnueabi --prefix=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr --exec_prefix=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr --bindir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi --sbindir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi --libexecdir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi --datadir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/share --sysconfdir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/etc --sharedstatedir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/com --localstatedir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/var --libdir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/lib/arm-poky-linux-gnueabi --includedir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/include --oldincludedir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/include --infodir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/share/info --mandir=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/share/man --disable-silent-rules --disable-dependency-tracking --with-libtool-sysroot=/work/build_src/tmp/sysroots/x86_64-nativesdk-pokysdk-linux --with-gnu-ld --enable-shared --enable-languages=c,c++ --enable-threads=posix --enable-multilib --enable-c99 --enable-long-long --enable-symvers=gnu --enable-libstdcxx-pch --program-prefix=arm-poky-linux-gnueabi- --without-local-prefix --enable-target-optspace --enable-lto --enable-libssp --disable-bootstrap --disable-libmudflap --with-system-zlib --with-linker-hash-style=gnu --enable-linker-build-id --with-ppl=no --with-cloog=no --enable-checking=release --enable-cheaders=c_global --with-gxx-include-dir=/opt/swi/y17-ext/sysroots/armv7a-vfp-neon-poky-linux-gnueabi/usr/include/c++/4.9.1 --with-build-time-tools=/work/build_src/tmp/sysroots/x86_64-linux/usr/arm-poky-linux-gnueabi/bin --with-sysroot=/opt/swi/y17-ext/sysroots/armv7a-vfp-neon-poky-linux-gnueabi --with-build-sysroot=/work/build_src/tmp/sysroots/swi-mdm9x15 --enable-poison-system-directories --with-mpfr=/work/build_src/tmp/sysroots/x86_64-nativesdk-pokysdk-linux --with-mpc=/work/build_src/tmp/sysroots/x86_64-nativesdk-pokysdk-linux --enable-nls --with-arch=armv7-a Thread model: posix gcc version 4.9.1 (GCC) COLLECT_GCC_OPTIONS='-O3' '-finline-functions' '-Wno-inline' '-Wall' '-v' '-pthread' '-D' 'BOOST_ALL_NO_LIB=1' '-D' 'BOOST_CONTAINER_STATIC_LINK=1' '-D' 'NDEBUG' '-I' '.' '-c' '-o' 'bin.v2/libs/container/build/gcc-arm/release/link-static/threading-multi/alloc_lib.o' '-shared-libgcc' '-march=armv7-a' '-mtls-dialect=gnu' /home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/cc1 -quiet -v -I . -iprefix /home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/ -D_REENTRANT -D BOOST_ALL_NO_LIB=1 -D BOOST_CONTAINER_STATIC_LINK=1 -D NDEBUG libs/container/src/alloc_lib.c -quiet -dumpbase alloc_lib.c -march=armv7-a -mtls-dialect=gnu -auxbase-strip bin.v2/libs/container/build/gcc-arm/release/link-static/threading-multi/alloc_lib.o -O3 -Wno-inline -Wall -version -finline-functions -o /tmp/ccNP4WY6.s GNU C (GCC) version 4.9.1 (arm-poky-linux-gnueabi) compiled by GNU C version 4.9.1, GMP version 6.0.0, MPFR version 3.1.2, MPC version 1.0.2 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory "/home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/../../../../../arm-poky-linux-gnueabi/include" ignoring duplicate directory "/home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/../../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/include" ignoring nonexistent directory "/opt/swi/y17-ext/sysroots/armv7a-vfp-neon-poky-linux-gnueabi/usr/lib/gcc/arm-poky-linux-gnueabi/4.9.1/include" ignoring nonexistent directory "/opt/swi/y17-ext/sysroots/armv7a-vfp-neon-poky-linux-gnueabi/usr/local/include" ignoring duplicate directory "/home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/../../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/include-fixed" ignoring nonexistent directory "/home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/../../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/../../../../../arm-poky-linux-gnueabi/include" ignoring nonexistent directory "/opt/swi/y17-ext/sysroots/armv7a-vfp-neon-poky-linux-gnueabi/usr/include" #include "..." search starts here: #include <...> search starts here: . /home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/include /home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/include-fixed End of search list. GNU C (GCC) version 4.9.1 (arm-poky-linux-gnueabi) compiled by GNU C version 4.9.1, GMP version 6.0.0, MPFR version 3.1.2, MPC version 1.0.2 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 89d75e59a6fc83bde96963c802ac00fb In file included from libs/container/src/alloc_lib.c:19:0: libs/container/src/dlmalloc_ext_2_8_6.c:13:100: fatal error: errno.h: No such file or directory #include "errno.h" //dlmalloc bug EINVAL is used in posix_memalign without checking LACKS_ERRNO_H ^ compilation terminated. "/home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++" -x c -O3 -finline-functions -Wno-inline -Wall -v -pthread -DBOOST_ALL_NO_LIB=1 -DBOOST_CONTAINER_STATIC_LINK=1 -DNDEBUG -I"." -c -o "bin.v2/libs/container/build/gcc-arm/release/link-static/threading-multi/alloc_lib.o" "libs/container/src/alloc_lib.c" ...failed gcc.compile.c bin.v2/libs/container/build/gcc-arm/release/link-static/threading-multi/alloc_lib.o... ...failed updating 1 target... ...updated 123 targets... Which I find strange, because the "errno.h" header is available on the disk image. It is found in these directories: <sysroot>/usr/include/linux/errno.h <sysroot>/usr/include/bits/errno.h <sysroot>/usr/include/sys/errno.h <sysroot>/usr/include/asm-generic/errno.h <sysroot>/usr/include/asm-generic/errno-base.h <sysroot>/usr/include/errno.h <sysroot>/usr/include/asm/errno.h What struck me as odd is that the include search for this file has a lot shorter search list than for other files. For example, searching for headers for libboost_atomic, it looks in more directories: #include "..." search starts here: #include <...> search starts here: . /home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/armv7a-vfp-neon-poky-linux-gnueabi/usr/include /home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/include /home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/include-fixed /home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/armv7a-vfp-neon-poky-linux-gnueabi/usr/include/c++/4.9.1 /home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/armv7a-vfp-neon-poky-linux-gnueabi/usr/include/c++/4.9.1/arm-poky-linux-gnueabi /home/developer/legato/packages/legato.toolchain.1.7.3.SWI9X15Y_07112100-wp85-wp750x-native-x86_64-201701091132/resources/native/sysroots/armv7a-vfp-neon-poky-linux-gnueabi/usr/include/c++/4.9.1/backward Can anybody help me with this problem? 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