6eee1fc68f
Add a GNU_STACK marker to crtend* files. This tells the linker that these files do not require an executable stack. When linking, a missing GNU_STACK marker in any .o file can prevent the compiler from automatically marking the final executable as NX safe (executable stack not required). In Android, we normally work around this by adding -Wa,--noexecstack / -Wl,-z,noexecstack. For files like crtend.S / crtend_so.S, which are included in every executable / shared library, it's better to add the GNU_STACK note directly to the assembly file. This allows the compiler to automatically mark the final executable as NX safe without any special command line options. References: http://www.gentoo.org/proj/en/hardened/gnu-stack.xml Change-Id: I07bd058f9f60ddd8b146e0fb36ba26ff84c0357d