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x10-lang / x10

Core implementation of X10 programming language including compiler, runtime, class libraries, sample programs and test suite
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statically linked X10 program #24

Open yohm opened 6 years ago

yohm commented 6 years ago

I'd like compile an X10 program statically linked to x10 runtime libraries in order to distribute it as a stand-alone executable file. As far as I understand, libx10, libx10rt_sockets, libgc are dynamically linked by default but I'd like to link them statically.

I found that the static libraries are created when we build x10 with an environment variable X10_STATIC_LIB as follows.

export X10_STATIC_LIB=1
cd x10/x10.dist
ant -Davailable.procs=8 -Doptimize=true -DNO_CHECKS=true dist

Even though I found .a files are created under x10.dist/*/lib directories, x10c++ tries to use "libgc.so" file, which causes a run-time error like

./hello.out: error while loading shared libraries: libgc.so.1: cannot open shared object file: No such file or directory

I found a tentative workaround of deleting libgc.so to force a static link, but this must not be a canonical way. Please tell me how to link it statically.

dgrove-oss commented 6 years ago

Hi, sorry for the slow response.

I think we need to add a test for X10_STATIC_LIB being set in x10.runtime/build.xml in the various stanzas of the build-bdwgc rule that don't already pass: <arg value="--disable-shared" /> to the configure command so that if X10_STATIC_LIB is set, then bdwgc is configured to not build libgc.so. If both libgc.a and libgc.so are available, the C++ compiler will prefer to link to the .so version. So we need to prevent libgc.so from being built.

Does this make sense?

yohm commented 6 years ago

Thank you for your reply. It makes sense. Do you have a plan to add an option to suppress building libgc.so?