c – 如何调试链接器错误？静态链接ICU时获取未定义的引用错误

clang++ -ccc-gcc-name g++ -Wl,-E -o velocity main.o city.o auto_lua.o
obj_builder.o index.o obj.o str.o db.o datetime.o msg_parser.o
task_scheduler.o gc.o global_settings.o transaction.o schema.o
skip_node.o util.o thread_context.o hashtable_base.o attr.o
page_pool.o result_buffer.o server_epoll.o logging.o test_server.o
test_main.o     -L../lib -L/usr/lib/gcc/x86_64-linux-gnu/4.7 -lc++
-lllalloc -lluajit -ldl -lm -lrt -lboost_system -lboost_filesystem
-licuuc -licui18n -licudata -lgtest
../lib/libicui18n.a(ucol.ao): In function `uprv_new_collIterate_50':
ucol.cpp:(.text.uprv_new_collIterate_50+0x37): undefined reference to
`icu_50::UMemory::operator new(unsigned long)'
ucol.cpp:(.text.uprv_new_collIterate_50+0xd2): undefined reference to
`icu_50::UMemory::operator delete(void*)'
../lib/libicui18n.a(ucol.ao): In function `uprv_delete_collIterate_50':
ucol.cpp:(.text.uprv_delete_collIterate_50+0x2f): undefined reference
to `icu_50::UMemory::operator delete(void*)'
../lib/libicui18n.a(ucol.ao): In function `initializeFCD(UErrorCode*)':
ucol.cpp:(.text._ZL13initializeFCDP10UErrorCode+0x2c): undefined
reference to `icu_50::Normalizer2Factory::getNFCImpl(UErrorCode&)'
../lib/libicui18n.a(ucol.ao): In function `ucol_initCollator_50':
ucol.cpp:(.text.ucol_initCollator_50+0x126): undefined reference to
`utrie_unserialize_50'
../lib/libicui18n.a(ucol.ao): In function `ucol_prv_getSpecialCE_50':
ucol.cpp:(.text.ucol_prv_getSpecialCE_50+0x9f6): undefined reference
to `u_charDigitValue_50'
ucol.cpp:(.text.ucol_prv_getSpecialCE_50+0xc1f): undefined reference
to `u_charDigitValue_50'

在编译的静态库上运行nm我看到：

nm -A libicu* | grep u_charDigitValue_50
libicui18n.a:unum.ao:                 U u_charDigitValue_50
libicui18n.a:decimfmt.ao:                 U u_charDigitValue_50
libicui18n.a:dcfmtsym.ao:                 U u_charDigitValue_50
libicui18n.a:ucol.ao:                 U u_charDigitValue_50
libicui18n.a:regexcmp.ao:                 U u_charDigitValue_50
libicui18n.a:rematch.ao:                 U u_charDigitValue_50
libicui18n.a:uregex.ao:                 U u_charDigitValue_50
libicui18n.a:tzfmt.ao:                 U u_charDigitValue_50
libicuuc.a:uchar.ao:0000000000000000 T u_charDigitValue_50
libicuuc.a:rbbiscan.ao:                 U u_charDigitValue_50

这让我相信(但我不是专家)这些函数实际上是在具有正确名称的静态库中定义的(从底部开始的第二行,注意它与粘贴错误底部的缺失符号的名称相匹配) .)

我定义了U_STATIC_IMPLEMENTATION = 1,我尝试在clang和gcc下编译49和50.我在ubuntu x64系统上.当我在构建静态库之后进行检查时,它会通过所有测试.我不知道如何继续.我可以尝试任何想法吗？