Alan Modra
f2aaebdb97
A target that sets EMBEDDED non-empty is one that doesn't want to put the ELF file header or program header in a memory image. Likely the target isn't interested in supporting dynamically loaded executables, shared libraries, or PIEs, because loaders for such binaries generally require program headers to be present. This isn't 100% true though. The target might be one where the loader accesses the file system in order to retrieve headers. Also, note that not all "shared libraries" require gcc -shared or the shared library support in the linker. I believe one implementation of shared libraries on uclinux is like this. So, this patch removes GENERATE_SHLIB_SCRIPT and GENERATE_PIE_SCRIPT in most emulparams files where EMBEDDED is set, restoring the shared lib and pie support in emulparams files that unset EMBEDDED after including a file where the support is removed. Exceptions to the general rule that EMBEDDED disables shared libs are: arm*-*-symbianelf*, where the OS wants shared library support without ELF program headers in the image, and sh*-*-uclinux*, where I've left things as they were, ie. both EMBEDDED and GENERATE_SHLIB_SCRIPT because I'm unsure as to the shared library scheme. * emulparams/aarch64elf.sh (GENERATE_SHLIB_SCRIPT), (GENERATE_PIE_SCRIPT): Don't set. * emulparams/aarch64elf32.sh (GENERATE_SHLIB_SCRIPT), (GENERATE_PIE_SCRIPT): Don't set. * emulparams/arcelf.sh (GENERATE_SHLIB_SCRIPT): Don't set. * emulparams/armelf.sh (GENERATE_SHLIB_SCRIPT), (GENERATE_PIE_SCRIPT): Don't set. * emulparams/armelf_fbsd.sh (GENERATE_SHLIB_SCRIPT): Set. * emulparams/armelf_nbsd.sh (GENERATE_SHLIB_SCRIPT), (GENERATE_PIE_SCRIPT): Set. * emulparams/armelf_vxworks.sh (GENERATE_SHLIB_SCRIPT): Set. * emulparams/armsymbian.sh (GENERATE_SHLIB_SCRIPT): Set. * emulparams/elf32bfin.sh (GENERATE_SHLIB_SCRIPT): Don't set. * emulparams/elf32microblaze.sh (GENERATE_SHLIB_SCRIPT): Don't set. * emulparams/score3_elf.sh (GENERATE_SHLIB_SCRIPT): Don't set. * emulparams/shelf.sh (GENERATE_SHLIB_SCRIPT): Don't set. * emulparams/shelf_nbsd.sh (GENERATE_SHLIB_SCRIPT), (GENERATE_PIE_SCRIPT): Set. * emulparams/shelf_uclinux.sh (GENERATE_SHLIB_SCRIPT): Set.
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