32位Ubuntu编译Android 4.0.4问题

问题一:在32位Ubuntu 12.04上编译Android4.0.4源码时,出现了关于emulator的错误,关键是其Makefile里的-m64参数,将其用-m32代替即可,错误提示如下:

ERROR: prebuilts/tools/gcc-sdk/../../gcc/linux-x86/host/x86_64-linux-glibc2.7-4.6/bin/x86_64-linux-gcc only run on 64-bit linux

make: *** [out/host/linux-x86/obj/STATIC_LIBRARIES/emulator64-target-arm_intermediates/tcg/tcg.o] Error 1

涉及需要改的文件如下:

external/qemu/Makefile.target

external/qemu/Makefile.common

问题二:编译时出现如下提示:

target Dex: core

Error occurred during initialization of VM

Could not reserve enough space for object heap

Could not create the Java virtual machine.

make: *** [out/target/common/obj/JAVA_LIBRARIES/core_intermediates/noproguard.classes-with-local.dex] Error 1

查找build/core/definitions.mk文件发现如下内容:

#TODO: use a smaller -Xmx value for most libraries;

#      only core.jar and framework.jar need a heap this big.

# Avoid the memory arguments on Windows, dx fails to load for some reason with them.

define transform-classes.jar-to-dex

@echo "target Dex: $(PRIVATE_MODULE)"

@mkdir -p $(dir $@)

$(hide) $(DX) \

$(if $(findstring windows,$(HOST_OS)),,-JXms16M -JXmx2048M) \

--dex --output=$@ \

$(incremental_dex) \

$(if $(NO_OPTIMIZE_DX), \

--no-optimize) \

$(if $(GENERATE_DEX_DEBUG), \

--debug --verbose \

--dump-to=$(@:.dex=.lst) \

--dump-width=1000) \

$(PRIVATE_DX_FLAGS) \

$<

endef

由于我的电脑只有2GB的内容,那么上面的2048M肯定满足不了,因为linux分配时还需分配给内核内存,故将该参数调小为1024M。

继续编译还会出现一些关于emulator的错误,而查阅了google官方资料,说是要在64bit系统上编译,换成64位的后,没出现什么错误,编译一切正常。

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