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use -march=native by default with a disable toggle

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This commit is contained in:
Daniel Micay 2018-10-28 22:31:46 -04:00
parent 00915521a3
commit 5bee717134
2 changed files with 10 additions and 0 deletions
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6
Makefile
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@ -1,3 +1,4 @@
CONFIG_NATIVE := true
CONFIG_CXX_ALLOCATOR := true
CONFIG_UBSAN := false
CONFIG_SEAL_METADATA := false
@ -8,6 +9,11 @@ endef
CPPFLAGS := -D_GNU_SOURCE
SHARED_FLAGS := -O2 -flto -fPIC -fvisibility=hidden -fno-plt -pipe -Wall -Wextra $(call safe_flag,-Wcast-align=strict) -Wcast-qual -Wwrite-strings
ifeq ($(CONFIG_NATIVE),true)
SHARED_FLAGS += -march=native
endif
CFLAGS := -std=c11 $(SHARED_FLAGS) -Wmissing-prototypes
CXXFLAGS := -std=c++14 $(SHARED_FLAGS)
LDFLAGS := -Wl,-z,defs,-z,relro,-z,now,-z,nodlopen,-z,text

4
README.md
View File

@ -60,6 +60,10 @@ make command as follows:
The available configuration options are the following:
* `CONFIG_NATIVE`: `true` (default) or `false` to control whether the code is
optimized for the detected CPU on the host. If this is disabled, setting up a
custom `-march` higher than the baseline architecture is highly recommended
due to substantial performance benefits for this code.
* `CONFIG_CXX_ALLOCATOR`: `true` (default) or `false` to control whether the
C++ allocator is replaced for slightly improved performance and detection of
mismatched sizes for sized deallocation (often type confusion bugs). This