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(setq package-enable-at-startup nil)
;; Hide UI elements ASAP
(push '(menu-bar-lines . 0) default-frame-alist)
(push '(tool-bar-lines . 0) default-frame-alist)
(push '(vertical-scroll-bars) default-frame-alist)
;; Display the architecture using:
;; gcc -march=native -Q --help=target | grep march
;;
;; The above command asks the compiler to resolve native for your current CPU
;; and display the resulting target. For example, if the output shows
;; -march=skylake, you know that skylake is the identifier you should pass to
;; -mtune and -march.
(setq my-cpu-architecture "aarch64")
;; `native-comp-compiler-options' specifies flags passed directly to the C
;; compiler (for example, GCC) when compiling the Lisp-to-C output
;; produced by the native compilation process. These flags affect code
;; generation, optimization, and debugging information.
(setq native-comp-compiler-options `(;; The most meaningful optimizations:
"-O2"
,(format "-mtune=%s" my-cpu-architecture)
,(format "-march=%s" my-cpu-architecture)
;; Reduce .eln size and compilation
;; overhead.
"-g0"
;; Good defensive choice for Emacs
;; stability.
"-fno-omit-frame-pointer"
"-fno-finite-math-only"))
(setq native-comp-driver-options '(;; -Wl,-z,pack-relative-relocs compresses
;; relocation tables to reduce file size and
;; slightly improve load times.
"-Wl,-z,pack-relative-relocs"
;; -Wl,-O2 applies standard linker-level
;; optimizations (like string merging) to the
;; generated shared object.
"-Wl,-O2"
;; -Wl,--as-needed prevents the linker from
;; recording dependencies on libraries that
;; are not actually used by the code.
"-Wl,--as-needed"))
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