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mk: Build jemalloc with -ffunction-sections

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It's quite possible that small programs don't use all of jemalloc, and building
with -ffunction-sections and -fdata-sections allows the linker (via
--gc-sections) to strip out all unused code at link time. This decreases the
size of a "hello world" executable for me from 716K to 482K with no measurable
impact on link time. After this patch jemalloc is still the largest portion of
our hello world executables, but this helps cut down on the size at least
somewhat!
This commit is contained in:
Alex Crichton 2014-12-24 20:20:01 -08:00
parent 7e11b22713
commit 58d808f988
1 changed files with 1 additions and 1 deletions
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mk/rt.mk
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@ -180,7 +180,7 @@ $$(JEMALLOC_LOCAL_$(1)): $$(JEMALLOC_DEPS) $$(MKFILE_DEPS)
AR="$$(AR_$(1))" \
RANLIB="$$(AR_$(1)) s" \
CPPFLAGS="-I $(S)src/rt/" \
EXTRA_CFLAGS="-g1"
EXTRA_CFLAGS="-g1 -ffunction-sections -fdata-sections"
$$(Q)$$(MAKE) -C "$$(JEMALLOC_BUILD_DIR_$(1))" build_lib_static
ifeq ($$(CFG_DISABLE_JEMALLOC),)