id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12573	b2 ignores <archiver> <ranlib> and other flags selecting toolchain	hbadger@…		"Building boost from sources git tag 1.62.0 (4f2bdeb93a4be13ba0dc5e9f44920a2bf67191fc) I want to crossbuild it, on linux (ubuntu) host, for Mac OS X target.

Goal: crossbuild the lib boost, with boost-locale

Result: boost calls my crossbuilder clang++, but calls incorrect (native system) ar, ranlib, etc. As result the produced .a files contain .o objects for Mach-O, but are packed it seems in some incorrect way, they fail when trying to actually use them in crossbuild of a hello world that uses them.

Expected result: b2 build should call provided -ar and -ranlib tools, e.g. /home/ubuntu/build/osxcross/target/bin/x86_64-apple-darwin15-ar


Reproduce:

I write the configuration file:

$ cat ~/user-config.jam 

{{{
using clang : : /home/ubuntu/build/osxcross/target/bin/x86_64-apple-darwin15-clang++ : <archiver>""/home/ubuntu/build/osxcross/target/bin/x86_64-apple-darwin15-ar-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"" <striper>""/home/ubuntu/build/osxcross/target/bin/x86_64-apple-darwin15-strip"" <ranlib>""/home/ubuntu/build/osxcross/target/bin/x86_64-apple-darwin15-ranlib"" :  ;
}}}

Mac OSX SDK is provided in e.g. /home/ubuntu/build/macsdk/MacOSX10.11.sdk 

Then I call boost build as:

{{{
export WITH_ICONV=""/home/ubuntu/build/macsdk/MacOSX10.11.sdk/usr/"" &&  git clean -xdf ; git submodule foreach git clean -xdf; ./bootstrap.sh --without-icu &&   ./b2 headers  && export OSX_CPU_ARCH=""core2"" && export OSX_VERSION_MIN=""10.8"" &&  time  strace  -fffff -s 2000  -e trace=process    ./b2  --toolset=clang     --build-type=complete    ""--with-filesystem"" ""--with-system"" ""--with-program_options"" ""--with-thread"" ""--with-locale""     cxxflags=-mmacosx-version-min=${OSX_VERSION_MIN} cxxflags=-march=${OSX_CPU_ARCH} target-os=darwin architecture=x86 address-model=64  --layout=tagged  link=static runtime-link=static  -sNO_BZIP2=1 --sNO_ZLIB=1       --prefix=/home/ubuntu/build/boost/build-osx/   threading=multi    -sICONV_PATH=""$WITH_ICONV""  --prefix=""/home/ubuntu/build/boost/build-osx/""  --user-config=/home/ubuntu/user-config.jam  install  &> ~/strace
}}}

You can also remove the strace part ""strace  -fffff -s 2000  -e trace=process"" and the end redirection.

Then I see in ~/strace that normal systems ar and ranlib are used. Also, providing not-existing ar program ""-AAAAAAAAAAAAA"" should cause build error, but it does not.





"	Bugs	new	To Be Determined	Building Boost	Boost 1.61.0	Showstopper		mac osx crossbuild toolchain ar ranlib