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Currently, we have [hjl@gnu-psc stack-2]$ make gcc -g -c -o foo.o foo.c gcc -fPIC -shared -o libbar.so bar.c -Wl,-z,execstack readelf -l libbar.so | grep STACK | grep RWE STACK 0x000000 0x00000000 0x00000000 0x00000 0x00000 RWE 0x4 gcc -o foo foo.o libbar.so -Wl,-rpath,. ./foo Hello readelf -l foo | grep STACK STACK 0x000000 0x00000000 0x00000000 0x00000 0x00000 RW 0x4 readelf -l foo | grep STACK | grep RWE make: *** [all] Error 1 That is we don't combine PT_GNU_STACK from DSO. This executable may fail to run on kernel with non-executable stack. But we can also argue that the DSO used at run-time may not need an executable stack. Any comments? H.J.
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