qt 5.12.8 release build

jjgcwll

I use qtcreter as IDE , qt version is 5.12.8. when i build my project with qmake in qtcreator .i want to make a release build but after i finish building the project the lib file (.so) or executive file still has debug info ( readelf -S *.so|grep debug show some debug section ) . In XXX.pro file i use CONFIG+=release CONFIG -= debug but the generated files still have debug info . so how to use qmake and make build qt project to generate a release verion .?

JonB

When compiling and linking your .so or executable Creator shows the actual commands being issued (in Build Output pane?). Copy and paste here when you build for release so you & we can see what it is doing. Make sure you are doing so on the .so/executable built for Release, not one built for Debug. Run file on it and see how that describes it, I think (but not sure) file tells you whether compiled for debug.

jjgcwll

CONFIG -= qt
TEMPLATE = lib
DEFINES += TESTRELEASELIB_LIBRARY
CONFIG += c++11
DEFINES += QT_DEPRECATED_WARNINGS
SOURCES +=
testreleaselib.cpp
HEADERS +=
testreleaselib_global.h
testreleaselib.h

Default rules for deployment.

unix {
target.path = /usr/lib
}
!isEmpty(target.path): INSTALLS += target
TARGET=testreleasesharelib
CONFIG += release
DESTDIR = $$(PUBLISH_DIR)/libs/InnerLib/MissionConfigTool

The OS is linux centos . Same sub project in different position generate diffrent result. one is release version the other contains debug info .

build panel output :
03:05:19: 清除03:05:19: 构建03:05:19: 为项目NEWYTH执行步骤 ...
03:05:19: 正在启动 "/usr/bin/make" clean -j8

rm -f .obj/testreleaselib.o
rm -f *~ core *.core
03:05:19: 进程"/usr/bin/make"正常退出。
03:05:19: 正在启动 "/home/kylin/Qt5.12.8/5.12.8/gcc_64/bin/qmake" /workspace/newyth/TaskPrepareTool/designer/src/wlltest/testreleaselib/testreleaselib.pro -spec linux-g++ CONFIG+=qtquickcompiler

03:05:19: 进程"/home/kylin/Qt5.12.8/5.12.8/gcc_64/bin/qmake"正常退出。
03:05:19: 正在启动 "/usr/bin/make" -f /workspace/build-NEWYTH-Desktop_Qt_5_12_8_GCC_64bit-Release/TaskPrepareTool/designer/src/wlltest/testreleaselib/Makefile qmake_all

make: 对“qmake_all”无需做任何事。
03:05:19: 进程"/usr/bin/make"正常退出。
03:05:19: 正在启动 "/usr/bin/make" -j8

g++ -c -pipe -O2 -g -std=gnu++11 -fno-exceptions -Wall -W -fPIC -DTESTRELEASELIB_LIBRARY -DQT_DEPRECATED_WARNINGS -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I/workspace/newyth/TaskPrepareTool/designer/src/wlltest/testreleaselib -I. -I/home/qt/openssl-1.1.1d/include -I/home/kylin/Qt5.12.8/5.12.8/gcc_64/mkspecs/linux-g++ -o .obj/testreleaselib.o /workspace/newyth/TaskPrepareTool/designer/src/wlltest/testreleaselib/testreleaselib.cpp
rm -f libchangedirlib.so.1.0.0 libchangedirlib.so libchangedirlib.so.1 libchangedirlib.so.1.0
g++ -Wl,--enable-new-dtags -Wl,-z,origin -Wl,-rpath,$ORIGIN/../../home/kylin/Qt5.12.8/5.12.8/gcc_64/lib -shared -Wl,-soname,libchangedirlib.so.1 -o libchangedirlib.so.1.0.0 .obj/testreleaselib.o -L/home/qt/openssl-1.1.1d/lib
ln -s libchangedirlib.so.1.0.0 libchangedirlib.so
ln -s libchangedirlib.so.1.0.0 libchangedirlib.so.1
ln -s libchangedirlib.so.1.0.0 libchangedirlib.so.1.0
rm -f /workspace/newythPublish/libs/InnerLib/MissionConfigTool/libchangedirlib.so.1.0.0
mv -f libchangedirlib.so.1.0.0 /workspace/newythPublish/libs/InnerLib/MissionConfigTool/libchangedirlib.so.1.0.0
rm -f /workspace/newythPublish/libs/InnerLib/MissionConfigTool/libchangedirlib.so
rm -f /workspace/newythPublish/libs/InnerLib/MissionConfigTool/libchangedirlib.so.1
rm -f /workspace/newythPublish/libs/InnerLib/MissionConfigTool/libchangedirlib.so.1.0
mv -f libchangedirlib.so /workspace/newythPublish/libs/InnerLib/MissionConfigTool/libchangedirlib.so
mv -f libchangedirlib.so.1 /workspace/newythPublish/libs/InnerLib/MissionConfigTool/libchangedirlib.so.1
mv -f libchangedirlib.so.1.0 /workspace/newythPublish/libs/InnerLib/MissionConfigTool/libchangedirlib.so.1.0
03:05:20: 进程"/usr/bin/make"正常退出。
03:05:20: Elapsed time: 00:01.

file command output
[root@localhost MissionConfigTool]# file libchangedirlib.so.1.0.0
libchangedirlib.so.1.0.0: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, not stripped
[root@localhost MissionConfigTool]# readelf -S libchangedirlib.so.1.0.0 |grep debug
[23] .debug_aranges PROGBITS 0000000000000000 00001041
[24] .debug_info PROGBITS 0000000000000000 00001071
[25] .debug_abbrev PROGBITS 0000000000000000 0000117c
[26] .debug_line PROGBITS 0000000000000000 00001263
[27] .debug_str PROGBITS 0000000000000000 00001304
[root@localhost MissionConfigTool]#

JonB

@jjgcwll
I see no evidence anything here is compiled for debug. The fact that readelf shows it has some symbols/areas to do with "debug" does not mean it is compiled for debug, for all I know these areas are empty-ish when compiled for release and full-ish when compiled for debug.

Why don't you start by compiling once for release and once for debug and compare ls -l libchangedirlib.so? Are they the same size or is the debug version much bigger than the release one?

UPDATE
Actually your g++ -c -pipe -O2 -g ..., isn't -g option for generate debug?