edbce9aad4
This patch enables LTO for TF-A when compiled with GCC. LTO is disabled by default and is enabled by ENABLE_LTO=1 build option. LTO is enabled only for aarch64 as there seem to be a bug in the aarch32 compiler when LTO is enabled. The changes in the makefiles include: - Adding -flto and associated flags to enable LTO. - Using gcc as a wrapper at link time instead of ld. This is recommended when using LTO as gcc internally takes care of invoking the necessary plugins for LTO. - Adding switches to pass options to ld. - Adding a flag to disable fix for erratum cortex-a53-843419 unless explicitly enabled. This is needed because GCC seem to automatically add the erratum fix when used as a wrapper for LD. Additionally, this patch updates the TF-A user guide with the new build option. Signed-off-by: zelalem-aweke <zelalem.aweke@arm.com> Change-Id: I1188c11974da98434b7dc9344e058cd1eacf5468 |
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| .. | ||
| build-options.rst | ||
| docs-build.rst | ||
| image-terminology.rst | ||
| index.rst | ||
| initial-build.rst | ||
| porting-guide.rst | ||
| prerequisites.rst | ||
| psci-lib-integration-guide.rst | ||
| rt-svc-writers-guide.rst | ||
| tools-build.rst | ||