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61 lines
2.0 KiB
Diff
61 lines
2.0 KiB
Diff
From e2d231e9839e27d1c7a2692496c1edc6cb2dec95 Mon Sep 17 00:00:00 2001
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From: Apaczer <94932128+Apaczer@users.noreply.github.com>
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Date: Sun, 16 Feb 2025 21:00:26 +0100
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Subject: [PATCH 1/2] Makefile: optimize & pgo flags
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---
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Makefile | 22 +++++++++++++++++++---
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1 file changed, 19 insertions(+), 3 deletions(-)
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diff --git a/Makefile b/Makefile
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index ef2deca..eb8ecbd 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -12,6 +12,8 @@ filter_out2 = $(call filter_out1,$(call filter_out1,$1))
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unixpath = $(subst \,/,$1)
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unixcygpath = /$(subst :,,$(call unixpath,$1))
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+PROFILE ?= 0
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+
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# system platform
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ifeq ($(platform),)
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platform = unix
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@@ -329,9 +331,23 @@ else ifeq ($(platform), miyoo)
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CC = /opt/miyoo/usr/bin/arm-linux-gcc
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CXX = /opt/miyoo/usr/bin/arm-linux-g++
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AR = /opt/miyoo/usr/bin/arm-linux-ar
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- fpic := -fPIC
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+ LIBC ?= $(shell $(CC) -print-file-name=libc.so | grep -q musl && echo "musl" || echo "glibc")
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+ifeq ($(LIBC),musl)
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+ fpic := -fPIC # brakes otherwise shared object core when profiling with gcc
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+else
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+ fpic := -fno-PIC
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+endif
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SHARED := -shared -Wl,--no-undefined -Wl,--version-script=link.T
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- FLAGS += -fomit-frame-pointer -ffast-math -march=armv5te -mtune=arm926ej-s
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+ FLAGS += -fomit-frame-pointer -ffast-math -march=armv5te -mtune=arm926ej-s \
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+ -fdata-sections -ffunction-sections -Wl,--gc-sections \
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+ -fno-stack-protector -fno-ident -fomit-frame-pointer \
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+ -fno-unroll-loops
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+ifeq ($(PROFILE), YES)
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+ FLAGS += -fprofile-generate=/mnt/profile # rm path if you want dir structure intact at runtime
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+ LDFLAGS += -lgcov
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+else ifeq ($(PROFILE), APPLY)
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+ FLAGS += -fprofile-use -fbranch-probabilities -Wno-error=coverage-mismatch
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+endif
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# Windows MSVC 2017 all architectures
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else ifneq (,$(findstring windows_msvc2017,$(platform)))
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@@ -566,7 +582,7 @@ all: $(TARGET)
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ifeq ($(DEBUG),1)
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FLAGS += -O0 -g
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else
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- FLAGS += -O2 -DNDEBUG $(EXTRA_GCC_FLAGS)
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+ FLAGS += -Ofast -DNDEBUG $(EXTRA_GCC_FLAGS)
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endif
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ifneq (,$(findstring msvc,$(platform)))
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--
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2.45.2.windows.1
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