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rules.mk: use -fPIC instead of -fpic on arm64

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Some packages fail to build on arm64 when PKG_ASLR_PIE_ALL=y, due to
machine-specific size restrictions on the global offset table.
While the manual instructs to recompile with -fPIC if it fails with
-fpic, by doing this per package, there is still a risk of random
breakage due to version bumps or other changes, so let's use -fPIC on
arm64 by default.

While comparing the sizes of 141 packages built with -fpic vs -fPIC,
most packages are either equal or smaller in size. Only 9 of the
compared packages turned out slightly larger.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
This commit is contained in:
Stijn Tintel 2020-12-04 18:32:46 +02:00
parent 66d12ce667
commit 0eb2fa39f3
1 changed files with 1 additions and 1 deletions
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2
rules.mk
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@ -77,7 +77,7 @@ IS_PACKAGE_BUILD := $(if $(filter package/%,$(BUILD_SUBDIR)),1)
OPTIMIZE_FOR_CPU=$(subst i386,i486,$(ARCH))
ifeq ($(ARCH),powerpc)
ifneq (,$(findstring $(ARCH) , aarch64 aarch64_be powerpc ))
FPIC:=-fPIC
else
FPIC:=-fpic