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| author | Matt Fleming <matt.fleming@intel.com> | 2012-12-04 21:17:47 +0000 |
|---|---|---|
| committer | Matt Fleming <matt.fleming@intel.com> | 2012-12-05 22:41:32 +0000 |
| commit | e4b3ce2dd82ce2da85c37fd3f332ec2eb802b734 (patch) | |
| tree | 8b98440a37716dab0bd4de8b87a3800e5a40b07b /mk/embedded.mk | |
| parent | a79ceb45909434d392aacbb92eb2dfa738479783 (diff) | |
| download | syslinux-e4b3ce2dd82ce2da85c37fd3f332ec2eb802b734.tar.gz | |
Symbol export whitelist
Before modules were dynamically loaded the boundary between GPL and
non-GPL code was implicit because of the separate link domains for
each module. With dynamic modules we need an explicit whitelist of
core symbols that non-GPL code can link against at runtime without
needing to be re-licensed under the GPL.
Mark such symbols with __export, so that it is explicitly clear which
symbols in the core can be linked against by non-GPL code.
Reduce the visibility of symbols in both the core and ldlinux.c32 with
-fvisibility=hidden. __export changes the visibility to 'default'.
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'mk/embedded.mk')
| -rw-r--r-- | mk/embedded.mk | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mk/embedded.mk b/mk/embedded.mk index e8f3ae30..c2f4edf3 100644 --- a/mk/embedded.mk +++ b/mk/embedded.mk @@ -32,6 +32,7 @@ GCCOPT += $(call gcc_ok,-falign-labels=0,-malign-labels=0) GCCOPT += $(call gcc_ok,-falign-loops=0,-malign-loops=0) GCCOPT += $(call gcc_ok,-mpreferred-stack-boundary=2,) GCCOPT += $(call gcc_ok,-mincoming-stack-boundary=2,) +GCCOPT += $(call gcc_ok,-fvisibility=hidden) LIBGCC := $(shell $(CC) $(GCCOPT) --print-libgcc) |