我正在使用bitbake 1.32.0，Yocto 2.2.2（Poky）试图将protobuf-c添加到我的构建中。我在protobuf_2.6.1上始终遇到构建失败（protobuf-c取决于protobuf）。
我可以手动下载Protobuf源代码并对其进行交叉编译，而不会出现任何问题。但是出于某些原因，Yocto无法构建它。
在Yocto构建过程中，libprotobuf-lite.so链接正常，但是由于以下错误，libprotobuf.so链接失败：
| /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/libc_nonshared.a(elf-init.oS): In function `__libc_csu_init':
| /usr/src/debug/glibc/2.24-r0/git/csu/elf-init.c:87: undefined reference to `__init_array_end'
| /usr/src/debug/glibc/2.24-r0/git/csu/elf-init.c:87: undefined reference to `__init_array_start'
| /home/cjholmes/gen4/build/tmp/sysroots/x86_64-linux/usr/libexec/arm-agl-linux-gnueabi/gcc/arm-agl-linux-gnueabi/6.2.0/ld: .libs/libprotobuf.so.9.0.1: hidden symbol `__init_array_end' isn't defined
| /home/cjholmes/gen4/build/tmp/sysroots/x86_64-linux/usr/libexec/arm-agl-linux-gnueabi/gcc/arm-agl-linux-gnueabi/6.2.0/ld: final link failed: Bad value
我尝试浏览libprotobuf.so一部分但未包含在libprotobuf-lite.so中的.o文件，以查看是否有任何直接引用缺少符号的内容，但我还没有发现任何有用的东西。
有一阵子我以为罪魁祸首是-nostdlib。但是后来我看到libprotobuf-lite可以使用该标志正常编译，并且-lc和-lgcc标志包含在链接命令中。
配方是非常简单的自动工具设置。
SUMMARY = "Protocol Buffers - structured data serialisation mechanism"
DESCRIPTION = "Protocol Buffers are a way of encoding structured data in an \
efficient yet extensible format. Google uses Protocol Buffers for almost \
all of its internal RPC protocols and file formats."
HOMEPAGE = "https://github.com/google/protobuf"
SECTION = "console/tools"
LICENSE = "BSD-3-Clause"
PACKAGE_BEFORE_PN = "${PN}-compiler"
DEPENDS = "zlib"
RDEPENDS_${PN}-compiler = "${PN}"
RDEPENDS_${PN}-dev += "${PN}-compiler"
LIC_FILES_CHKSUM =
"file://LICENSE;md5=af6809583bfde9a31595a58bb4a24514"
SRCREV = "bba83652e1be610bdb7ee1566ad18346d98b843c"
PV = "2.6.1+git${SRCPV}"
SRC_URI = "git://github.com/google/protobuf.git"
EXTRA_OECONF += " --with-protoc=echo"
inherit autotools
S = "${WORKDIR}/git"
FILES_${PN}-compiler = "${bindir} ${libdir}/libprotoc${SOLIBS}"
BBCLASSEXTEND = "native nativesdk"
这是更完整的错误说明：
| arm-agl-linux-gnueabi-libtool: link: arm-agl-linux-gnueabi-g++ -march=armv7-a -marm -mfpu=neon -mfloat-abi=softfp -mcpu=cortex-a9 --sysroot=/home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4 -fPIC -DPIC -shared -nostdlib /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/Scrt1.o /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/crti.o /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/arm-agl-linux-gnueabi/6.2.0/crtbeginS.o google/protobuf/stubs/.libs/atomicops_internals_x86_gcc.o google/protobuf/stubs/.libs/atomicops_internals_x86_msvc.o google/protobuf/stubs/.libs/common.o google/protobuf/stubs/.libs/once.o google/protobuf/stubs/.libs/stringprintf.o google/protobuf/.libs/extension_set.o google/protobuf/.libs/generated_message_util.o google/protobuf/.libs/message_lite.o google/protobuf/.libs/repeated_field.o google/protobuf/.libs/wire_format_lite.o google/protobuf/io/.libs/coded_stream.o google/protobuf/io/.libs/zero_copy_stream.o google/protobuf/io/.libs/zero_copy_stream_impl_lite.o google/protobuf/stubs/.libs/strutil.o google/protobuf/stubs/.libs/substitute.o google/protobuf/stubs/.libs/structurally_valid.o google/protobuf/.libs/descriptor.o google/protobuf/.libs/descriptor.pb.o google/protobuf/.libs/descriptor_database.o google/protobuf/.libs/dynamic_message.o google/protobuf/.libs/extension_set_heavy.o google/protobuf/.libs/generated_message_reflection.o google/protobuf/.libs/message.o google/protobuf/.libs/reflection_ops.o google/protobuf/.libs/service.o google/protobuf/.libs/text_format.o google/protobuf/.libs/unknown_field_set.o google/protobuf/.libs/wire_format.o google/protobuf/io/.libs/gzip_stream.o google/protobuf/io/.libs/printer.o google/protobuf/io/.libs/strtod.o google/protobuf/io/.libs/tokenizer.o google/protobuf/io/.libs/zero_copy_stream_impl.o google/protobuf/compiler/.libs/importer.o google/protobuf/compiler/.libs/parser.o -lpthread -lz -L/home/cjholmes/gen4/build/tmp/sysroots/x86_64-linux/usr/lib/arm-agl-linux-gnueabi/gcc/arm-agl-linux-gnueabi/6.2.0 -L/home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/lib -L/home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/arm-agl-linux-gnueabi/6.2.0 -L/home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/libstdc++.so -lm /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/libssp_nonshared.a -lc -lgcc_s -lgcc /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/arm-agl-linux-gnueabi/6.2.0/crtendS.o /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/crtn.o -march=armv7-a -marm -mfpu=neon -mfloat-abi=softfp -mcpu=cortex-a9 --sysroot=/home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4 -pthread -O2 -g -fstack-protector-strong -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -fstack-protector-strong -Wl,-z -Wl,relro -Wl,-z -Wl,now -pthread -Wl,-soname -Wl,libprotobuf.so.9 -o .libs/libprotobuf.so.9.0.1
| arm-agl-linux-gnueabi-libtool: link: arm-agl-linux-gnueabi-g++ -march=armv7-a -marm -mfpu=neon -mfloat-abi=softfp -mcpu=cortex-a9 --sysroot=/home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4 -fPIC -DPIC -shared -nostdlib /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/Scrt1.o /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/crti.o /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/arm-agl-linux-gnueabi/6.2.0/crtbeginS.o google/protobuf/stubs/.libs/atomicops_internals_x86_gcc.o google/protobuf/stubs/.libs/atomicops_internals_x86_msvc.o google/protobuf/stubs/.libs/common.o google/protobuf/stubs/.libs/once.o google/protobuf/stubs/.libs/stringprintf.o google/protobuf/.libs/extension_set.o google/protobuf/.libs/generated_message_util.o google/protobuf/.libs/message_lite.o google/protobuf/.libs/repeated_field.o google/protobuf/.libs/wire_format_lite.o google/protobuf/io/.libs/coded_stream.o google/protobuf/io/.libs/zero_copy_stream.o google/protobuf/io/.libs/zero_copy_stream_impl_lite.o -lpthread -lz -L/home/cjholmes/gen4/build/tmp/sysroots/x86_64-linux/usr/lib/arm-agl-linux-gnueabi/gcc/arm-agl-linux-gnueabi/6.2.0 -L/home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/lib -L/home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/arm-agl-linux-gnueabi/6.2.0 -L/home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/libstdc++.so -lm /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/libssp_nonshared.a -lc -lgcc_s -lgcc /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/arm-agl-linux-gnueabi/6.2.0/crtendS.o /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/crtn.o -march=armv7-a -marm -mfpu=neon -mfloat-abi=softfp -mcpu=cortex-a9 --sysroot=/home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4 -pthread -O2 -g -fstack-protector-strong -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -fstack-protector-strong -Wl,-z -Wl,relro -Wl,-z -Wl,now -pthread -Wl,-soname -Wl,libprotobuf-lite.so.9 -o .libs/libprotobuf-lite.so.9.0.1
| ERROR: oe_runmake failed
| /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/libc_nonshared.a(elf-init.oS): In function `__libc_csu_init':
| /usr/src/debug/glibc/2.24-r0/git/csu/elf-init.c:87: undefined reference to `__init_array_end'
| /usr/src/debug/glibc/2.24-r0/git/csu/elf-init.c:87: undefined reference to `__init_array_start'
| /home/cjholmes/gen4/build/tmp/sysroots/x86_64-linux/usr/libexec/arm-agl-linux-gnueabi/gcc/arm-agl-linux-gnueabi/6.2.0/ld: .libs/libprotobuf-lite.so.9.0.1: hidden symbol `__init_array_end' isn't defined
| /home/cjholmes/gen4/build/tmp/sysroots/x86_64-linux/usr/libexec/arm-agl-linux-gnueabi/gcc/arm-agl-linux-gnueabi/6.2.0/ld: final link failed: Bad value
| collect2: error: ld returned 1 exit status
| make[3]: *** [libprotobuf-lite.la] Error 1
| make[3]: *** Waiting for unfinished jobs....
| /home/cjholmes/gen4/build/tmp/sysroots/imx6dlleargen4/usr/lib/libc_nonshared.a(elf-init.oS): In function `__libc_csu_init':
| /usr/src/debug/glibc/2.24-r0/git/csu/elf-init.c:87: undefined reference to `__init_array_end'
| /usr/src/debug/glibc/2.24-r0/git/csu/elf-init.c:87: undefined reference to `__init_array_start'
| /home/cjholmes/gen4/build/tmp/sysroots/x86_64-linux/usr/libexec/arm-agl-linux-gnueabi/gcc/arm-agl-linux-gnueabi/6.2.0/ld: .libs/libprotobuf.so.9.0.1: hidden symbol `__init_array_end' isn't defined
| /home/cjholmes/gen4/build/tmp/sysroots/x86_64-linux/usr/libexec/arm-agl-linux-gnueabi/gcc/arm-agl-linux-gnueabi/6.2.0/ld: final link failed: Bad value
| collect2: error: ld returned 1 exit status
| make[3]: *** [libprotobuf.la] Error 1
| make[3]: Leaving directory `/home/cjholmes/gen4/build/tmp/work/cortexa9-neon-agl-linux-gnueabi/protobuf/2.6.1+gitAUTOINC+bba83652e1-r0/build/src'
| make[2]: *** [all] Error 2
| make[2]: Leaving directory `/home/cjholmes/gen4/build/tmp/work/cortexa9-neon-agl-linux-gnueabi/protobuf/2.6.1+gitAUTOINC+bba83652e1-r0/build/src'
| make[1]: *** [all-recursive] Error 1
| make[1]: Leaving directory `/home/cjholmes/gen4/build/tmp/work/cortexa9-neon-agl-linux-gnueabi/protobuf/2.6.1+gitAUTOINC+bba83652e1-r0/build'
| make: *** [all] Error 2
| WARNING: /home/cjholmes/gen4/build/tmp/work/cortexa9-neon-agl-linux-gnueabi/protobuf/2.6.1+gitAUTOINC+bba83652e1-r0/temp/run.do_compile.121250:1 exit 1 from 'exit 1'
| ERROR: Function failed: do_compile (log file is located at /home/cjholmes/gen4/build/tmp/work/cortexa9-neon-agl-linux-gnueabi/protobuf/2.6.1+gitAUTOINC+bba83652e1-r0/temp/log.do_compile.121250)
我真的可以在接下来要看的内容上使用一些指针。已经吃了很多小时了。