When we request a thumb build on a non-thumb-only target, we hand
compilation to a script that tries to build everything as thumb, falling
back to non-thumb arm mode if the thumb build fails. In order for
this to work, the compiler flag -mthumb-interwork is required.
Move this definition out of the thumb-cc script, and into the configure
script (ie along with the other target-specific definitions)
Change-Id: Idc1f8caa088dbbf710b169b272de61cc0b7c9ca6
Some distros, including Ubuntu/Debian, don't provide a "python"
command unless an additional package is installed. Using "python3"
explicitly should work everywhere.
Using "/usr/bin/env" respects the user's PATH, so they can choose
a specific Python version instead of forcing the systemwide copy.
Change-Id: I02e3ead92939c42df6def79dec3dc2a62c62b1c3
You'll need a libgcc build with interworking enabled (our eabi gcc works)
Confirmed to work on Sansa AMS
Confirmed to boot on Gigabeat S
Not working on PP, linker generates invalid branches when mixing
ARM->thumb switches and long calls
Build time will be about 50% longer, because the gcc wrapper script
tries to build everything with -mthumb and falls back to default if it
fails (for example if the file uses inline ARM-only assembly)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26760 a1c6a512-1295-4272-9138-f99709370657
