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makefile: Add OPTIMIZE= command option to change default from -O3

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Mark Pizzolato 2022-10-30 17:12:05 -10:00
parent 1792303a9e
commit 9cfa212e60
1 changed files with 9 additions and 5 deletions
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14
makefile
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@ -49,7 +49,10 @@
# cause the build to use Link Time Optimization to maximally optimize # cause the build to use Link Time Optimization to maximally optimize
# the results. Link Time Optimization can report errors which aren't # the results. Link Time Optimization can report errors which aren't
# otherwise detected and will also take significantly longer to # otherwise detected and will also take significantly longer to
# complete. # complete. Additionally, non debug builds default to build with an
# optimization level of -O3. This optimization level can be changed
# by invoking GNU OPTIMIZE=-O2 (or whatever optimize value you want)
# on the command line if desired.
# #
# The default build will run per simulator tests if they are # The default build will run per simulator tests if they are
# available. If building without running tests is desired, # available. If building without running tests is desired,
@ -492,7 +495,7 @@ ifeq (${WIN32},) #*nix Environments (&& cygwin)
endif endif
OS_CCDEFS += -D_HPUX_SOURCE -D_LARGEFILE64_SOURCE OS_CCDEFS += -D_HPUX_SOURCE -D_LARGEFILE64_SOURCE
OS_LDFLAGS += -Wl,+b: OS_LDFLAGS += -Wl,+b:
LTO = override LTO =
else else
LIBEXT = a LIBEXT = a
endif endif
@ -1263,6 +1266,7 @@ endif
ifneq (,$(UNSUPPORTED_BUILD)) ifneq (,$(UNSUPPORTED_BUILD))
CFLAGS_GIT += -DSIM_BUILD=Unsupported=$(UNSUPPORTED_BUILD) CFLAGS_GIT += -DSIM_BUILD=Unsupported=$(UNSUPPORTED_BUILD)
endif endif
OPTIMIZE ?= -O3
ifneq ($(DEBUG),) ifneq ($(DEBUG),)
CFLAGS_G = -g -ggdb -g3 CFLAGS_G = -g -ggdb -g3
CFLAGS_O = -O0 CFLAGS_O = -O0
@ -1270,10 +1274,10 @@ ifneq ($(DEBUG),)
LTO = LTO =
else else
ifneq (,$(findstring clang,$(COMPILER_NAME))$(findstring LLVM,$(COMPILER_NAME))) ifneq (,$(findstring clang,$(COMPILER_NAME))$(findstring LLVM,$(COMPILER_NAME)))
CFLAGS_O = -O3 -fno-strict-overflow CFLAGS_O = $(OPTIMIZE) -fno-strict-overflow
GCC_OPTIMIZERS_CMD = ${GCC} --help 2>&1 GCC_OPTIMIZERS_CMD = ${GCC} --help 2>&1
else else
CFLAGS_O := -O3 CFLAGS_O := $(OPTIMIZE)
endif endif
LDFLAGS_O = LDFLAGS_O =
GCC_MAJOR_VERSION = $(firstword $(subst ., ,$(GCC_VERSION))) GCC_MAJOR_VERSION = $(firstword $(subst ., ,$(GCC_VERSION)))
@ -1308,7 +1312,7 @@ else
CFLAGS_O += -fno-strict-overflow CFLAGS_O += -fno-strict-overflow
endif endif
ifneq (,$(findstring $(GCC_VERSION),$(LTO_EXCLUDE_VERSIONS))) ifneq (,$(findstring $(GCC_VERSION),$(LTO_EXCLUDE_VERSIONS)))
LTO = override LTO =
endif endif
ifneq (,$(LTO)) ifneq (,$(LTO))
ifneq (,$(findstring -flto,$(GCC_OPTIMIZERS))) ifneq (,$(findstring -flto,$(GCC_OPTIMIZERS)))