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build: Experimental LTO support, phase one

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* Only codecs and plugins are enabled
 * Only native builds (so far)
 * Only tested on xDuoo X3 (MIPS, monochrome)
 * opus & speex generate some warnings
 * Significant compile time impact

Change-Id: I519b0d179631a54b2103cd67225bd5ec6ad3bd2f
This commit is contained in:
Solomon Peachy 2023-07-02 20:43:01 -04:00
parent 7b12cc3927
commit 73f40d8a23
4 changed files with 31 additions and 1 deletions
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7
lib/rbcodec/codecs/codecs.make
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@ -33,6 +33,13 @@ else
endif
CODECLDFLAGS += $(GLOBAL_LDOPTS)
ifdef USE_LTO
CODECLDFLAGS += -flto -fno-builtin -ffreestanding
CODECFLAGS += -flto -fno-builtin -ffreestanding
CODECLDFLAGS += -e __header
endif
# the codec libraries
include $(RBCODECLIB_DIR)/codecs/demac/libdemac.make
include $(RBCODECLIB_DIR)/codecs/liba52/liba52.make