How to configure linaro-gcc - eclipse

Now i'm using gcc-linaro-5.5.0-2017.10-x86_64_arm-linux-gnueabihf and using eclipse to cross-compile. But when build, i get error like
home/osboxes/artik5/opt/toolchains/gcc-linaro-5.5.0-2017.10-x86_64_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/5.5.0/../../../../arm-linux-gnueabihf/bin/ld: cannot find crt1.o: No such file or directory
/home/osboxes/artik5/opt/toolchains/gcc-linaro-5.5.0-2017.10-x86_64_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/5.5.0/../../../../arm-linux-gnueabihf/bin/ld: cannot find crti.o: No such file or directory
/home/osboxes/artik5/opt/toolchains/gcc-linaro-5.5.0-2017.10-x86_64_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/5.5.0/../../../../arm-linux-gnueabihf/bin/ld: cannot find /lib/arm-linux-gnueabihf/libpthread.so.0
makefile:209: recipe for target 'hc' failed
/home/osboxes/artik5/opt/toolchains/gcc-linaro-5.5.0-2017.10-x86_64_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/5.5.0/../../../../arm-linux-gnueabihf/bin/ld: cannot find /usr/lib/arm-linux-gnueabihf/libpthread_nonshared.a
Anyone help me fix this bug. I find crt1.o, crti.o, libpthread.so.0 and libpthread_nonshared.a in /home/osboxes/artik5/opt/toolchains/gcc-linaro-5.5.0-2017.10-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/libc/usr/lib

rt1.o, crti.o and crtn.o and libc.a all come with your glibc.
you need use --sysroot option to tell gcc where to search for binaries created by glibc.

Related

or-tools: build examples on vs2022

I've downloaded the binaries: or-tools_VisualStudio2022-64bit_v9.3.10497
I'm using vs2022 on win10. My shell has cygwin in the path if it's related.
I ran
%comspec% /k "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvars64.bat"
cl.exe is in the path, and which.exe finds it.
I ran make test_cc, but it complained
the cl command was not found in your PATH
exit 127
make: *** [Makefile:271: test_cc] Error 127
The var CXX_BIN was empty even though which cl returned the correct path. I set it manually to cl.
Then, there was a complaint about echo and a newline, which I commented out. Then, it couldn't find md, so I created manually md objs.
A few of the examples were built, but then it stopped with another error. For now, I just got what I want:
make run SOURCE=examples/cpp/solve.cc
but probably there was an easier way to get it?
I tried to build it from the source using cmake. Doesn't work off-the-shelf as well:
Build abseil-cpp: OFF
...
CMake Error at C:/prj-external-libs/vcpkg/scripts/buildsystems/vcpkg.cmake:824 (_find_package):
By not providing "Findabsl.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "absl", but
CMake did not find one.
Could not find a package configuration file provided by "absl" with any of
the following names:
abslConfig.cmake
absl-config.cmake
Add the installation prefix of "absl" to CMAKE_PREFIX_PATH or set
"absl_DIR" to a directory containing one of the above files. If "absl"
provides a separate development package or SDK, be sure it has been
installed.
Call Stack (most recent call first):
cmake/deps.cmake:33 (find_package)
CMakeLists.txt:304 (include)
If finds gurobi95.dll, but it can't find the function GRBtunemodeladv.
On failure, solve.exe crashes with (unknown) names in the stack trace. Need to add debug symbols and graceful error handling.
cmake looks more promising, and I was missing dependencies. Should give it a flag -DBUILD_DEPS:BOOL=ON.
OR-Tools depends on few external dependencies so CMake build will try to find them using the idiomatic find_package() => your distro/env(vcpkg ?) must provide them, just regular CMake stuff here.
ref: https://cmake.org/cmake/help/latest/command/find_package.html
note: we provide few findFoo.cmake here https://github.com/google/or-tools/tree/main/cmake
We also provide a meta option to build statically all our dependencies, simply pass -DBUILD_DEPS=ON cmake option at configure time.
You can also build only some of them, please take a look at
https://github.com/google/or-tools/tree/main/cmake#dependencies
Concerning Gurobi and GRBtunemodeladv symbol, this one has been removed by last version of Gurobi so we fix it in v9.4/main/stable branch...
see: https://github.com/google/or-tools/commit/d6e0feb8ae96368523deb99fe4318d32e80e8145

Adding pkg-config search path in CentOS

I have this library(lxc) installed which has the .pc file in
/usr/local/lib/pkgconfig I'm working on a modified version of CentOS. Apparantly, I'm having pkg-conf package (instead of pkg-config). When I try to install a package which has dependencies on this library, on running cmake .., I get the error Package 'lxc' required by 'virtual:world', not found /usr/share/cmake/Modules/FindPkgConfig.cmake:467(message): A required package was not found . Now when I do
pkg-config --variable pc_path pkg-config
it shows /usr/lin64/pkgconfig:/usr/share/pkgconfig. So I need to add the /usr/local/lib/pkgconfig to the search path. However, this does not seem straightforward. The general recommended solution is to add this path using export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig. However, this does not work. I also tried adding a file local.conf in the folder /etc/ld.so.conf.d with the content as /usr/local/lib/pkgconfig but this doesn't help either. Searching the man page of pkg_conf here https://man.archlinux.org/man/pkgconf.1.en , I also tried doing export $CMAKE_PREFIX_PATH=/usr/local/lib/pkgconfig, which also doesn't help. I'm a bit out of ideas at this point and would be really grateful if someone could provide an insight.

Update from Qt 5.5.1 to Qt 5.6 leads to linking errors

I just try to update a project from Qt5.5.1 to Qt5.6 and now it fails during linking.
C:/Qt/Qt5.6.0/Tools/mingw492_32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lC:/Qt/Qt5.6.0/5.6/mingw49_32/lib/liblibQt5Core.a
C:/Qt/Qt5.6.0/Tools/mingw492_32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lC:/Qt/Qt5.6.0/5.6/mingw49_32/lib/liblibQt5Sql.a
C:/Qt/Qt5.6.0/Tools/mingw492_32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lC:/Qt/Qt5.6.0/5.6/mingw49_32/lib/liblibQt5Gui.a
C:/Qt/Qt5.6.0/Tools/mingw492_32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lC:/Qt/Qt5.6.0/5.6/mingw49_32/lib/liblibQt5Widgets.a
collect2.exe: error: ld returned 1 exit status
The programm compiled fine with QT5.5.1 using qbs.
Now I added the new QT Version and I get these errors.
I have no idea, why qbs adding two time the "lib" prefix, nor why qbs is trying to use it at all. This program should use the shared libraries of Qt.
Could someone give me a hint, how I can fix this? Or what the cause of the problem might be?
This issue was resolved in qbs 1.5.0.

log4c link error in eclipse

Been trying to use log4c in an eclipse IDE. No matter what I try, I can't seem to resolve the __log4c_category_vlog reference in my link.
I can see __log4c_category_vlog via an objdump of the liblog4c.a file, I've tried modifying some of the code in the category.c/category.h files before I do the make/make install, all to no avail. I've set my linker to point to the proper lib64 folder, added proper include etc in Eclipse.
The sample programs that come with log4c compile/link/run ok, so I must be missing something obvious. Any help/heads up appreciated!
log4c version:1.2.4
Eclipse version:luna
Linux: Opensuse 13.2
gcc version: 4.8.3 20140627
/home/david/build3/include/log4c/category.h:359: undefined reference to __log4c_category_vlog'
makefile:30: recipe for target 'testLog4c' failed
./src/testLog4c.o: In functionlog4c_category_log':

cmake to eclipse project conversion issue

I am trying to create an eclipse project from a cmake project .
I used the following command
cmake -G "Eclipse CDT4 - Unix Makefiles" ./`
it gives the following error
CMake Error at CMakeLists.txt:119 (find_package):
By not providing "FindGlib.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Glib", but
CMake did not find one.
Could not find a package configuration file provided by "Glib" (requested
version 2.28) with any of the following names:
GlibConfig.cmake
glib-config.cmake
Add the installation prefix of "Glib" to CMAKE_PREFIX_PATH or set
"Glib_DIR" to a directory containing one of the above files. If "Glib"
provides a separate development package or SDK, be sure it has been
installed.
-- Configuring incomplete, errors occurred!
I have glib installed . actually it couldn't resolve the path i guess. wherever find is there in cmake file , it is giving the smiler errors. please i suggest a way out, i badly need to load this project in cmake. Thanks.
Here is line 119 where error message is pointing
find_package(Glib 2.28 REQUIRED)
include_directories(${Glib_INCLUDE_DIRS})
list(APPEND LIBS ${Glib_LIBRARIES})
add_definitions(${Glib_DEFINITIONS})
When you call find_package(MyPackage) in a CMake file, it tries to find a FindMyPackage.cmake configuration in its system path (/usr/share/cmake-2.8/Modules on my Ubuntu box), or in the directory you did specify as CMAKE_MODULE_PATH).
The solution to your problem is to create a directory for modules in your source tree (e.g. CMakeModules), put in it a FindGlib.cmake file that you can find using Google, and add
set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/CMakeModules)
in your CMakeLists.txt before the actual call to find_package.
(your problem is not related to the Eclipse generator, you could remove that from the title of the question).