Add SYSROOT, EXTRA_{LDFLAGS,LDLIBS} config opts; sample Android NDK config
Signed-off-by: Rob Walker <rwalker@rwalker.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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27
Config.in
27
Config.in
@ -600,12 +600,39 @@ config CROSS_COMPILER_PREFIX
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Native builds leave this empty.
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config SYSROOT
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string "Path to sysroot"
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default ""
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help
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If you want to build BusyBox with a cross compiler, then you
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might also need to specify where /usr/include and /usr/lib
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will be found.
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For example, BusyBox can be built against an installed
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Android NDK, platform version 9, for ARM ABI with
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CONFIG_SYSROOT=/opt/android-ndk/platforms/android-9/arch-arm
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Native builds leave this empty.
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config EXTRA_CFLAGS
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string "Additional CFLAGS"
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default ""
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help
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Additional CFLAGS to pass to the compiler verbatim.
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config EXTRA_LDFLAGS
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string "Additional LDFLAGS"
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default ""
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help
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Additional LDFLAGS to pass to the linker verbatim.
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config EXTRA_LDLIBS
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string "Additional LDLIBS"
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default ""
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help
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Additional LDLIBS to pass to the linker with -l.
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endmenu
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menu 'Debugging Options'
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@ -104,6 +104,11 @@ else
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LDLIBS += m
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endif
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ifneq ($(CONFIG_SYSROOT),)
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CFLAGS += --sysroot=$(CONFIG_SYSROOT)
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export SYSROOT=$(CONFIG_SYSROOT)
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endif
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ifeq ($(CONFIG_PAM),y)
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# libpam uses libpthread, so for static builds busybox must be linked to
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# libpthread. On some platforms that requires an explicit -lpthread, so
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@ -137,6 +142,16 @@ ifneq (,$(findstring $(W_ELF2FLT),$(LDFLAGS) $(CFLAGS_busybox)))
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SKIP_STRIP = y
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endif
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ifneq ($(CONFIG_EXTRA_LDFLAGS),)
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EXTRA_LDFLAGS += $(strip $(subst ",,$(CONFIG_EXTRA_LDFLAGS)))
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#"))
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endif
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ifneq ($(CONFIG_EXTRA_LDLIBS),)
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LDLIBS += $(strip $(subst ",,$(CONFIG_EXTRA_LDLIBS)))
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#"))
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endif
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# Busybox is a stack-fatty so make sure we increase default size
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# TODO: use "make stksizes" to find & fix big stack users
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# (we stole scripts/checkstack.pl from the kernel... thanks guys!)
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1016
configs/android_ndk_defconfig
Normal file
1016
configs/android_ndk_defconfig
Normal file
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