Difference between revisions of "Porting/Tor Browser"
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* (DONE!) Finish porting this to Firefox ESR 60. | * (DONE!) Finish porting this to Firefox ESR 60. | ||
| − | * Build the projects besides | + | * Test the openssl and libevent binaries. |
| + | * Build the projects besides firefox, openssl, and libevent. | ||
* Generalize the GNU/Linux cross-compiling changes so that they work on target arches besides armhf. (ppc64be, ppc64le, and aarch64 are all likely to be useful.) | * Generalize the GNU/Linux cross-compiling changes so that they work on target arches besides armhf. (ppc64be, ppc64le, and aarch64 are all likely to be useful.) | ||
Revision as of 01:46, 11 March 2019
Early efforts to port Tor Browser to POWER are underway. The primary challenge is that Tor Browser uses an unusual build system (rbm) in order to ensure reproducible builds. While Tor's configuration of rbm can cross-compile for Windows and macOS targets, it is not configured out of the box to cross-compile for GNU/Linux targets. As a result, our early efforts are focused on modifying Tor's rbm configuration to support cross-compiling for non-x86 GNU/Linux targets; it is expected that this will be useful not only for POWER but also for targets like ARM.
Current source code is at: https://notabug.org/JeremyRand/tor-browser-build/src/armhf-esr60 (armhf-esr60 branch)
If you're interested in joining the effort, talk to Jeremy_Rand or Jeremy_Rand_Talos in #talos-workstation.
Contents
Build instructions
./rbm/rbm build firefox --target nightly --target torbrowser-linux-arm ./rbm/rbm build openssl --target nightly --target torbrowser-linux-arm ./rbm/rbm build libevent --target nightly --target torbrowser-linux-arm
Errors / Troubleshooting
Unfixed
Missing libssp.so.0
./firefox: error while loading shared libraries: libssp.so.0: cannot open shared object file: No such file or directory
- Workaround: add the
Browserdirectory to yourLD_LIBRARY_PATHin order for Tor Browser to find the library. - This should be fixable by porting the non-Firefox projects (one of which is responsible for setting the
LD_LIBRARY_PATH).
Fixed
/var/tmp/build/firefox-f8f42fea2af3/js/src/jsnativestack.cpp:69:31: error: 'syscall' was not declared in this scope- This is because
jsnativestack.cppforgot to#include <unistd.h>. This is fixed in all releases of Tor Browser based on ESR 60. Since we're still using ESR 52 for now, I fixed it by applying a short patch to add the missing include.
- This is because
/var/tmp/build/firefox-f8f42fea2af3/js/src/jsnativestack.cpp:77:27: error: 'getpid' was not declared in this scope- Also caused by missing
#include <unistd.h>injsnativestack.cpp; same fixes as above.
- Also caused by missing
./firefox: error while loading shared libraries: libssp.so.0: cannot open shared object file: No such file or directory- Workaround: copy
libssp.so*from thegcc-crossoutput tar into theBrowserdirectory of thefirefoxoutput. - Fixed in the Firefox rbm build script as of 2018 Oct 10.
- Workaround: copy
- Segfault immediately on startup in
libxul.so- Only affects ESR 60; ESR 52 unaffected
- Fixed by doing all of these:
- Upgrade to gcc 7.3.0 / binutils 2.29.1
- Build with
ac_add_options --disable-elf-hack - Build with
ac_add_options --disable-stylo
- Possibly related bugs:
Task list
- (DONE!) Finish porting this to Firefox ESR 60.
- Test the openssl and libevent binaries.
- Build the projects besides firefox, openssl, and libevent.
- Generalize the GNU/Linux cross-compiling changes so that they work on target arches besides armhf. (ppc64be, ppc64le, and aarch64 are all likely to be useful.)
