Liên kết với libQt5Core

Question

Tôi đã cài đặt Qt5.4 bằng trình cài đặt trực tuyến (làm việc trên ubuntu 14). Tôi đang cố gắng để biên dịch c của tôi ++ nguồn và liên kết chống lại libQt5Core nhưng ld ném một lỗi:

make 
g++ -Wall test.o Party.o Communication.o FileParser.o PeerConnection.o ServerModule.o Utilities.o -o party -g -L/home/bush/Qt/5.4/gcc_64/lib -L/usr/lib/x86_64-linux-gnu/ -lQt5Core -lboost_system -lpthread 
/usr/bin/ld: warning: libicui18n.so.53, needed by /home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so, not found (try using -rpath or -rpath-link) 
/usr/bin/ld: warning: libicuuc.so.53, needed by /home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so, not found (try using -rpath or -rpath-link) 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_setMillis_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_fromUnicode_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_get_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_inDaylightTime_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_open_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_countAvailable_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_countAliases_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `u_errorName_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_openCountryTimeZones_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `u_strToUpper_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_getDefaultName_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `uenum_next_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucol_strcoll_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_getMaxCharSize_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_getAvailableName_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucol_open_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_getTimeZoneDisplayName_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_toUnicode_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `uenum_close_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucol_getSortKey_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_getAlias_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_close_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucol_setAttribute_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_close_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_openTimeZoneIDEnumeration_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_openTimeZones_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_getStandardName_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucol_close_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_compareNames_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_clone_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `u_strToLower_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_getDefaultTimeZone_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_open_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucnv_setSubstChars_53' 
/home/bush/Qt/5.4/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_getDSTSavings_53' 
collect2: error: ld returned 1 exit status 
make: *** [party] Error 1 

makefile của tôi là:

CPPFLAGS=-g -c --std=c++0x -I/usr/include -I/home/bush/Qt/5.4/gcc_64/include -I/home/bush/Qt/5.4/gcc_64/include/QtCore -I/usr/include/boost 
LDFLAGS=-g -L/home/bush/Qt/5.4/gcc_64/lib -L/usr/lib/x86_64-linux-gnu/ -lQt5Core -lboost_system -lpthread 

all:party 

party:test.o Party.o Communication.o FileParser.o PeerConnection.o ServerModule.o Utilities.o 
    g++ -Wall $^ -o party $(LDFLAGS) 

test.o:test.cpp 
    g++ $(CPPFLAGS) test.cpp 
Party.o:Party.cpp 
    g++ $(CPPFLAGS) Party.cpp 
Communication.o:Communication.cpp 
    g++ $(CPPFLAGS) Communication.cpp 
FileParser.o:FileParser.cpp 
    g++ -fPIC $(CPPFLAGS) FileParser.cpp 
PeerConnection.o:PeerConnection.cpp 
    g++ $(CPPFLAGS) PeerConnection.cpp 
ServerModule.o:ServerModule.cpp 
    g++ $(CPPFLAGS) ServerModule.cpp 
Utilities.o:Utilities.cpp 
    g++ $(CPPFLAGS) Utilities.cpp 

Answer 1

Cố gắng thêm -licuuc đến LDFLAGS của makefile.

sudo apt-get install libicu-dev

Answer 2

Trong trường hợp của tôi, nó hoạt động sau khi tôi tạo 3 liên kết tượng trưng. Các lib đã được cài đặt nhưng tôi đã có một phiên bản mới hơn (55) so với dự kiến ​​(54).

sudo ln -s /usr/local/Qt/5.5/gcc_64/lib/libicui18n.so.54 /usr/lib/x86_64-linux-gnu/libicui18n.so.54 
sudo ln -s /usr/local/Qt/5.5/gcc_64/lib/libicuuc.so.54 /usr/lib/x86_64-linux-gnu/libicuuc.so.54 
sudo ln -s /usr/local/Qt/5.5/gcc_64/lib/libicudata.so.54 /usr/lib/x86_64-linux-gnu/libicudata.so.54 

Answer 3

Tôi gặp phải lỗi này khi tôi cố gắng xây dựng Iris dưới Ubuntu. Tôi đã giải quyết nó bằng cách xóa CONFIG + = static từ tệp .pro

Answer 4

Tôi gặp phải vấn đề tương tự. nhưng tôi tìm đường ra chỉ bằng mã này.

export LD_LIBRARY_PATH=/usr/local/Qt/5.5/gcc_64/lib:$LD_LIBRARY_PATH 

Answer 5

Tôi gặp lỗi như vậy khi cố gắng xây dựng dự án của mình dưới Debian 8 (với libicu52 từ kho chính thức) từ QtCreator. Tôi đã giải quyết nó bằng cách thay đổi 'Môi trường' cho Kit Qt (5.8.0) thành: LD_LIBRARY_PATH =/opt/Qt/5.8/gcc_64/lib: $ {LD_LIBRARY_PATH}.

Screenshot: Changes marked by red line