Cross compile crash. RPi.

[ivlevdenis]

I'm testing cross compile this lib for Raspberry Pi 2.

1. Mount RPi rootfs to /mnt/rasp-pi-rootfs/. Create symlink in /usr/local to /mnt/rasp-pi-rootfs/usr/local/QtDIR.
2. Create simple test bin with cargo new hello --bin and add qmlrs to dependencies.
3. Add target to ~/.cargo/config

[target.armv7-unknown-linux-gnueabihf]
linker = "/mnt/rasp-pi-rootfs/usr/bin/arm-linux-gnueabihf-gcc"

1. First run cargo build --target=armv7-unknown-linux-gnueabihf for fetch dependencies.
2. Add

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSROOT /mnt/rasp-pi-rootfs)
set(CMAKE_C_COMPILER /home/di-erz/projects/images/gcc-4.7-linaro-rpi-gnueabihf/bin/arm-linux-gnueabihf-gcc)
set(CMAKE_CXX_COMPILER /home/di-erz/projects/images/gcc-4.7-linaro-rpi-gnueabihf/bin/arm-linux-gnueabihf-g++)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

to CMakeLists.txt to qmlrs-0.1.1/ext/libqmlrswrapper.
Then build static libqmlrswrapper

$ cd qmlrs-0.1.1/ext/libqmlrswrapper/build

$ PATH=$PATH:/mnt/rasp-pi-rootfs/usr/local/Qt-rasp2-5.7.0 \
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/mnt/rasp-pi-rootfs/usr/local/Qt-rasp2-5.7.0/lib \
PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/mnt/rasp-pi-rootfs/usr/local/Qt-rasp2-5.7.0/lib/pkgconfig/ \
CMAKE_SYSROOT=/mnt/rasp-pi-rootfs/ \
CMAKE_CXX_COMPILER=/mnt/rasp-pi-rootfs/usr/bin/arm-linux-gnueabihf-cpp \
CMAKE_C_COMPILER=/mnt/rasp-pi-rootfs/usr/bin/arm-linux-gnueabihf-gcc \
cmake ../

$ make

1. Return to test project dir, clean, and rebuild.

$ cd projects/hello

$ CMAKE_SYSROOT=/mnt/rasp-pi-rootfs \
PATH=/mnt/rasp-pi-rootfs/usr/local/Qt-rasp2-5.7.0:$PATH \
PKG_CONFIG_PATH=/mnt/rasp-pi-rootfs/usr/local/Qt-rasp2-5.7.0/lib/pkgconfig/ \
PKG_CONFIG_ALLOW_CROSS=1 \
cargo build --target=armv7-unknown-linux-gnueabihf --verbose

Cargo exit with 101 error code.

   Compiling hello v0.1.0 (file:///home/di-erz/projects/rust_test_armf7/hello)
     Running `rustc src/main.rs --crate-name hello --crate-type bin -g -C metadata=633f842f00664fda --out-dir /home/di-erz/projects/rust_test_armf7/hello/target/armv7-unknown-linux-gnueabihf/debug --emit=dep-info,link --target armv7-unknown-linux-gnueabihf -C linker=/mnt/rasp-pi-rootfs/usr/bin/arm-linux-gnueabihf-gcc -L dependency=/home/di-erz/projects/rust_test_armf7/hello/target/armv7-unknown-linux-gnueabihf/debug/deps --extern qmlrs=/home/di-erz/projects/rust_test_armf7/hello/target/armv7-unknown-linux-gnueabihf/debug/deps/libqmlrs-4c95d386a3275de2.rlib -L native=/home/di-erz/.cargo/registry/src/github.com-1ecc6299db9ec823/qmlrs-0.1.1/ext/libqmlrswrapper/build -L native=/usr/local/Qt-rasp2-5.7.0/lib`
error: linking with `/mnt/rasp-pi-rootfs/usr/bin/arm-linux-gnueabihf-gcc` failed: exit code: 2
  |
  = note: "/mnt/rasp-pi-rootfs/usr/bin/arm-linux-gnueabihf-gcc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-L" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib" "/home/di-erz/projects/rust_test_armf7/hello/target/armv7-unknown-linux-gnueabihf/debug/hello.0.o" "-o" "/home/di-erz/projects/rust_test_armf7/hello/target/armv7-unknown-linux-gnueabihf/debug/hello" "-Wl,--gc-sections" "-pie" "-nodefaultlibs" "-L" "/home/di-erz/projects/rust_test_armf7/hello/target/armv7-unknown-linux-gnueabihf/debug/deps" "-L" "/home/di-erz/.cargo/registry/src/github.com-1ecc6299db9ec823/qmlrs-0.1.1/ext/libqmlrswrapper/build" "-L" "/usr/local/Qt-rasp2-5.7.0/lib" "-L" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib" "-Wl,-Bstatic" "-Wl,-Bdynamic" "/home/di-erz/projects/rust_test_armf7/hello/target/armv7-unknown-linux-gnueabihf/debug/deps/libqmlrs-4c95d386a3275de2.rlib" "/home/di-erz/projects/rust_test_armf7/hello/target/armv7-unknown-linux-gnueabihf/debug/deps/liblibc-1bd8847afb79f283.rlib" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib/libstd-958ae23af751ccd2.rlib" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib/libpanic_unwind-a9a59c59600d7fc2.rlib" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib/libunwind-6c9d51e4a80592ac.rlib" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib/libcollections-d6fc9dbb93241229.rlib" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib/liballoc-d486feb737ebb44c.rlib" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib/liballoc_jemalloc-ffb42151b6c9616e.rlib" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib/liblibc-233ca0904a4b2a29.rlib" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib/librand-2bb4926cb0753fd8.rlib" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib/librustc_unicode-ccb09dfcfc8f1ea6.rlib" "/home/di-erz/.multirust/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/armv7-unknown-linux-gnueabihf/lib/libcore-aad7393ea968a91e.rlib" "-l" "stdc++" "-l" "Qt5Quick" "-l" "Qt5Gui" "-l" "Qt5Qml" "-l" "Qt5Network" "-l" "Qt5Core" "-l" "util" "-l" "dl" "-l" "rt" "-l" "pthread" "-l" "gcc_s" "-l" "pthread" "-l" "c" "-l" "m" "-l" "rt" "-l" "util" "-l" "compiler-rt"
  = note: /mnt/rasp-pi-rootfs/usr/bin/arm-linux-gnueabihf-gcc: 1: /mnt/rasp-pi-rootfs/usr/bin/arm-linux-gnueabihf-gcc: Syntax error: word unexpected (expecting ")")


error: aborting due to previous error

error: Could not compile `hello`.

Caused by:
  Process didn't exit successfully: `rustc src/main.rs --crate-name hello --crate-type bin -g -C metadata=633f842f00664fda --out-dir /home/di-erz/projects/rust_test_armf7/hello/target/armv7-unknown-linux-gnueabihf/debug --emit=dep-info,link --target armv7-unknown-linux-gnueabihf -C linker=/mnt/rasp-pi-rootfs/usr/bin/arm-linux-gnueabihf-gcc -L dependency=/home/di-erz/projects/rust_test_armf7/hello/target/armv7-unknown-linux-gnueabihf/debug/deps --extern qmlrs=/home/di-erz/projects/rust_test_armf7/hello/target/armv7-unknown-linux-gnueabihf/debug/deps/libqmlrs-4c95d386a3275de2.rlib -L native=/home/di-erz/.cargo/registry/src/github.com-1ecc6299db9ec823/qmlrs-0.1.1/ext/libqmlrswrapper/build -L native=/usr/local/Qt-rasp2-5.7.0/lib` (exit code: 101)

I would be glad of any idea!