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Re: Cross compile issue


Hi, Johnson!

On Aug 27, Johnson Cheng wrote:
> Dear Sergei,
> Sorry to update again. (I am a newer on cmake)
> I did some modifications on my configure command as below,
> LD=/home/johnson/x86_64_TCglibc-2.19-3/usr/bin/x86_64-buildroot-linux-gnu-ld NM=/home/johnson/x86_64_TCglibc-2.19-3/usr/bin/x86_64-buildroot-linux-gnu-nm CC=/home/johnson/x86_64_TCglibc-2.19-3/usr/bin/x86_64-buildroot-linux-gnu-gcc GCC=/home/johnson/x86_64_TCglibc-2.19-3/usr/bin/x86_64-buildroot-linux-gnu-gcc CXX=/home/johnson/x86_64_TCglibc-2.19-3/usr/bin/x86_64-buildroot-linux-gnu-g++ RANLIB=/home/johnson/x86_64_TCglibc-2.19-3/usr/bin/x86_64-buildroot-linux-gnu-ranlib \
>                 CFLAGS="-I/home/johnson/cross_prj/sysroot/usr/include -I/home/johnson/cross_prj/sysroot/include" \
>                 CXXFLAGS="-I/home/johnson/cross_prj/sysroot/usr/include -I/home/johnson/cross_prj/sysroot/include" \
>                 LDFLAGS="-L/home/johnson/cross_prj/sysroot/lib -L/home/johnson/cross_prj/sysroot/usr/lib -lm -lz -ldl -lcrypt -pthread" \
>                 CXXLDFLAGS="-L/home/johnson/cross_prj/sysroot/lib -L/home/johnson/cross_prj/sysroot/usr/lib -lm -lz -ldl -lcrypt -pthread" \
>                 ../../cmake/HOST-cmake/bin/cmake . \
>                 -DCMAKE_TOOLCHAIN_FILE=../cross.cmake \
>                 -DIMPORT_EXECUTABLES=/home/johnson/SanSoft/model/Phoenix_130313/Package/mariadb/native/import_executables.cmake \
>                 -DXTRADB_OK=1

This is not a good idea. I mean -DXTRADB_OK=1. XTRADB_OK is set
MSVC is defined. Depending on what exactly is defined, different parts
of the code are enabled. When you force XTRADB_OK=1 without enabling any
of the other defines, XtraDB will not enable any of these parts of the
code. Most probably it won't compile at all.

Instead of forcing -DXTRADB_OK=1, you need to do -DHAVE_IB_GCC_ATOMIC_BUILTINS=1.
Then XtraDB will compile as if gcc atomic builtins were available.
They probably are anyway, but cross-compilation caused the test to fail.

> It can success to configure, but it still has DB warning message. I am
> not sure if I can ignore it??
>   CMake Warning at storage/tokudb/CMakeLists.txt:17 (MESSAGE):
>     TokuDB is enabled, but jemalloc is not.  This configuration is not supported

If you intend to use tokudb, then you probably should not ignore it.
if you don't intend to use tokudb, you can as well specify -DWITHOUT_TOKUDB=1
and it won't be compiled at all.

> Now I type "make" to do cross compiling, It seems it's not easy...
>  [ 17%] Building CXX object storage/xtradb/CMakeFiles/xtradb.dir/buf/buf0buddy.cc.o
>  [ 17%] Building CXX object storage/xtradb/CMakeFiles/xtradb.dir/buf/buf0buf.cc.o
>  /home/johnson/SanSoft/model/Phoenix_130313/Package/mariadb/mariadb-10.0.21/storage/xtradb/buf/buf0buf.cc: In function �buf_block_t* buf_page_get_gen(ulint, ulint, ulint, ulint, buf_block_t*, ulint, const char*, ulint, mtr_t*)’:
>  /home/johnson/SanSoft/model/Phoenix_130313/Package/mariadb/mariadb-10.0.21/storage/xtradb/buf/buf0buf.cc:3021:55: error: �os_atomic_increment_ulint’ was not declared in this scope
>    os_atomic_increment_ulint(&buf_pool->n_pend_unzip, 1);
>                                                  ^

That's exactly what I meant above. This error happens because you've
defined TOKUDB_OK=1


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