[rk3568]linux strip后可执行程序太大
2024-05-22 02:11:58
查看GCC工具是否存在优化，或者未优化导致，
$CC -Q --help=optimizers
查看开启的程度，如果有很多disable未进行优化像，在makefile中增加-O0，极度优化状态进行
The following options control optimizations:-O<number>-Ofast-Og-Os-faggressive-loop-optimizations [enabled]-falign-functions [enabled]-falign-functions=-falign-jumps [enabled]-falign-jumps=-falign-labels [enabled]-falign-labels=-falign-loops [enabled]-falign-loops=-fallocation-dce [enabled]-fallow-store-data-races [disabled]-fassociative-math [disabled]-fassume-phsa [available in BRIG]-fasynchronous-unwind-tables [enabled]-fauto-inc-dec [enabled]-fbranch-count-reg [enabled]-fbranch-probabilities [disabled]-fcaller-saves [enabled]-fcode-hoisting [enabled]-fcombine-stack-adjustments [enabled]-fcompare-elim [enabled]-fconserve-stack [disabled]-fcprop-registers [enabled]-fcrossjumping [enabled]-fcse-follow-jumps [enabled]-fcx-fortran-rules [disabled]-fcx-limited-range [disabled]-fdce [enabled]-fdefer-pop [enabled]-fdelayed-branch [disabled]-fdelete-dead-exceptions [disabled]-fdelete-null-pointer-checks [enabled]-fdevirtualize [enabled]-fdevirtualize-speculatively [enabled]-fdse [enabled]-fearly-inlining [enabled]-fexceptions [disabled]-fexcess-precision=[fast|standard] [default]-fexpensive-optimizations [enabled]-ffast-math-ffinite-loops [disabled]-ffinite-math-only [disabled]-ffloat-store [disabled]-fforward-propagate [enabled]-ffp-contract=[off|on|fast] fast-ffp-int-builtin-inexact [enabled]-ffunction-cse [enabled]-fgcse [enabled]-fgcse-after-reload [disabled]-fgcse-las [disabled]-fgcse-lm [enabled]-fgcse-sm [disabled]-fgraphite [disabled]-fgraphite-identity [disabled]-fguess-branch-probability [enabled]-fhandle-exceptions -fexceptions-fhoist-adjacent-loads [enabled]-fif-conversion [enabled]-fif-conversion2 [enabled]-findirect-inlining [enabled]-finline [enabled]-finline-atomics [enabled]-finline-functions [enabled]-finline-functions-called-once [enabled]-finline-small-functions [enabled]-fipa-bit-cp [enabled]-fipa-cp [enabled]-fipa-cp-clone [disabled]-fipa-icf [enabled]-fipa-icf-functions [enabled]-fipa-icf-variables [enabled]-fipa-profile [enabled]-fipa-pta [disabled]-fipa-pure-const [enabled]-fipa-ra [enabled]-fipa-reference [enabled]-fipa-reference-addressable [enabled]-fipa-sra [enabled]-fipa-stack-alignment [enabled]-fipa-vrp [enabled]-fira-algorithm=[CB|priority] CB-fira-hoist-pressure [enabled]-fira-loop-pressure [disabled]-fira-region=[one|all|mixed] [default]-fira-share-save-slots [enabled]-fira-share-spill-slots [enabled]-fisolate-erroneous-paths-attribute [disabled]-fisolate-erroneous-paths-dereference [enabled]-fivopts [enabled]-fjump-tables [enabled]-fkeep-gc-roots-live [disabled]-flifetime-dse [enabled]-flifetime-dse=<0,2> 2-flimit-function-alignment [disabled]-flive-patching -flive-patching=inline-clone-flive-patching=[inline-only-static|inline-clone] [default]-flive-range-shrinkage [disabled]-floop-interchange [disabled]-floop-nest-optimize [disabled]-floop-parallelize-all [disabled]-floop-unroll-and-jam [disabled]-flra-remat [enabled]-fmath-errno [enabled]-fmodulo-sched [disabled]-fmodulo-sched-allow-regmoves [disabled]-fmove-loop-invariants [enabled]-fnon-call-exceptions [disabled]-fnothrow-opt [available in C++, ObjC++]-fomit-frame-pointer [disabled]-fopt-info [disabled]-foptimize-sibling-calls [enabled]-foptimize-strlen [enabled]-fpack-struct [disabled]-fpack-struct=<number>-fpartial-inlining [enabled]-fpatchable-function-entry=-fpeel-loops [disabled]-fpeephole [enabled]-fpeephole2 [enabled]-fplt [enabled]-fpredictive-commoning [disabled]-fprefetch-loop-arrays [enabled]-fprintf-return-value [enabled]-fprofile-partial-training [disabled]-fprofile-reorder-functions [disabled]-freciprocal-math [disabled]-free [enabled]-freg-struct-return [enabled]-frename-registers [enabled]-freorder-blocks [enabled]-freorder-blocks-algorithm=[simple|stc] stc-freorder-blocks-and-partition [disabled]-freorder-functions [enabled]-frerun-cse-after-loop [enabled]-freschedule-modulo-scheduled-loops [disabled]-frounding-math [disabled]-frtti [available in C++, D, ObjC++]-fsave-optimization-record [disabled]-fsched-critical-path-heuristic [enabled]-fsched-dep-count-heuristic [enabled]-fsched-group-heuristic [enabled]-fsched-interblock [enabled]-fsched-last-insn-heuristic [enabled]-fsched-pressure [enabled]-fsched-rank-heuristic [enabled]-fsched-spec [enabled]-fsched-spec-insn-heuristic [enabled]-fsched-spec-load [disabled]-fsched-spec-load-dangerous [disabled]-fsched-stalled-insns [disabled]-fsched-stalled-insns-dep [enabled]-fsched-stalled-insns-dep=<number>-fsched-stalled-insns=<number>-fsched2-use-superblocks [disabled]-fschedule-fusion [enabled]-fschedule-insns [enabled]-fschedule-insns2 [enabled]-fsection-anchors [enabled]-fsel-sched-pipelining [disabled]-fsel-sched-pipelining-outer-loops [disabled]-fsel-sched-reschedule-pipelined [disabled]-fselective-scheduling [disabled]-fselective-scheduling2 [disabled]-fshort-enums [enabled]-fshort-wchar [disabled]-fshrink-wrap [enabled]-fshrink-wrap-separate [enabled]-fsignaling-nans [disabled]-fsigned-zeros [enabled]-fsimd-cost-model=[unlimited|dynamic|cheap] unlimited-fsingle-precision-constant [disabled]-fsplit-ivs-in-unroller [enabled]-fsplit-loops [disabled]-fsplit-paths [disabled]-fsplit-wide-types [enabled]-fsplit-wide-types-early [disabled]-fssa-backprop [enabled]-fssa-phiopt [enabled]-fstack-check=[no|generic|specific]-fstack-clash-protection [disabled]-fstack-protector [disabled]-fstack-protector-all [disabled]-fstack-protector-explicit [disabled]-fstack-protector-strong [enabled]-fstack-reuse=[all|named_vars|none] all-fstdarg-opt [enabled]-fstore-merging [enabled]-fstrict-aliasing [enabled]-fstrict-enums [available in C++, ObjC++]-fstrict-volatile-bitfields [enabled]-fthread-jumps [enabled]-fno-threadsafe-statics [available in C++, ObjC++]-ftoplevel-reorder [enabled]-ftracer [disabled]-ftrapping-math [enabled]-ftrapv [disabled]-ftree-bit-ccp [enabled]-ftree-builtin-call-dce [enabled]-ftree-ccp [enabled]-ftree-ch [enabled]-ftree-coalesce-vars [enabled]-ftree-copy-prop [enabled]-ftree-cselim [enabled]-ftree-dce [enabled]-ftree-dominator-opts [enabled]-ftree-dse [enabled]-ftree-forwprop [enabled]-ftree-fre [enabled]-ftree-loop-distribute-patterns [enabled]-ftree-loop-distribution [disabled]-ftree-loop-if-convert [enabled]-ftree-loop-im [enabled]-ftree-loop-ivcanon [enabled]-ftree-loop-optimize [enabled]-ftree-loop-vectorize [disabled]-ftree-lrs [disabled]-ftree-parallelize-loops=<number> 1-ftree-partial-pre [disabled]-ftree-phiprop [enabled]-ftree-pre [enabled]-ftree-pta [enabled]-ftree-reassoc [enabled]-ftree-scev-cprop [enabled]-ftree-sink [enabled]-ftree-slp-vectorize [disabled]-ftree-slsr [enabled]-ftree-sra [enabled]-ftree-switch-conversion [enabled]-ftree-tail-merge [enabled]-ftree-ter [enabled]-ftree-vectorize-ftree-vrp [enabled]-funconstrained-commons [disabled]-funroll-all-loops [disabled]-funroll-completely-grow-size [enabled]-funroll-loops [disabled]-funsafe-math-optimizations [disabled]-funswitch-loops [disabled]-funwind-tables [enabled]-fvar-tracking [enabled]-fvar-tracking-assignments [enabled]-fvar-tracking-assignments-toggle [disabled]-fvar-tracking-uninit [disabled]-fvariable-expansion-in-unroller [disabled]-fvect-cost-model=[unlimited|dynamic|cheap] cheap-fversion-loops-for-strides [disabled]-fvpt [disabled]-fweb [enabled]-fwrapv [disabled]-fwrapv-pointer [disabled]-mlow-precision-div [disabled]-mlow-precision-recip-sqrt [disabled]-mlow-precision-sqrt [disabled]
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