I setup Qt Creator as explained in How to set up Qt Creator to cross compile for embedded Linux. It works for qmake managed projects, but it does not work with CMake.
I created a simple CMake project to test it. This is the CMakeLists.txt:
project(test)
cmake_minimum_required(VERSION 2.8)
aux_source_directory(. SRC_LIST)
add_executable(${PROJECT_NAME} ${SRC_LIST})
This is the output of CMake if called from Qt Creator:
/usr/bin/cmake /home/oe/test '-GCodeBlocks - Unix Makefiles' -DCMAKE_CXX_COMPILER:STRING=/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-
linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc -DQT_QMAKE_EXECUTABLE:STRING=
-- The C compiler identification is GNU 4.9.3
-- The CXX compiler identification is GNU 5.2.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc
-- Check for working CXX compiler: /home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc -- broken
CMake Error at /usr/share/cmake/Modules/CMakeTestCXXCompiler.cmake:54 (message):
The C++ compiler
"/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc"
is not able to compile a simple test program.
It fails with the following output:
Change Dir: /home/oe/test/build/CMakeFiles/CMakeTmp
Run Build Command:"/usr/bin/gmake" "cmTC_92000/fast"
/usr/bin/gmake -f CMakeFiles/cmTC_92000.dir/build.make
CMakeFiles/cmTC_92000.dir/build
gmake[1]: Entering directory
'/home/oe/test/build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_92000.dir/testCXXCompiler.cxx.o
/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc
-o CMakeFiles/cmTC_92000.dir/testCXXCompiler.cxx.o -c
/home/oe/test/build/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
Linking CXX executable cmTC_92000
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_92000.dir/link.txt
--verbose=1
/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc
CMakeFiles/cmTC_92000.dir/testCXXCompiler.cxx.o -o cmTC_92000 -rdynamic
/local/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/../../libexec/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/real-ld:
error: cannot open crt1.o: No such file or directory
/local/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/../../libexec/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/real-ld:
error: cannot open crti.o: No such file or directory
/local/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/../../libexec/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/real-ld:
error: cannot open crtbegin.o: No such file or directory
/local/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/../../libexec/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/real-ld:
error: cannot open crtend.o: No such file or directory
/local/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/../../libexec/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/real-ld:
error: cannot open crtn.o: No such file or directory
/local/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/../../libexec/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/real-ld:
error: cannot find -lgcc
/local/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/../../libexec/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/real-ld:
error: cannot find -lgcc_s
/local/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/../../libexec/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/real-ld:
error: cannot find -lc
/local/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/../../libexec/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/real-ld:
error: cannot find -lgcc
/local/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/../../libexec/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/real-ld:
error: cannot find -lgcc_s
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_92000.dir/build.make:97: recipe for target 'cmTC_92000'
failed
gmake[1]: *** [cmTC_92000] Error 1
gmake[1]: Leaving directory
'/home/oe/test/build/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_92000/fast' failed
gmake: *** [cmTC_92000/fast] Error 2
CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:1 (project)
-- Configuring incomplete, errors occurred!
See also "/home/oe/test/build/CMakeFiles/CMakeOutput.log".
See also "/home/oe/test/build/CMakeFiles/CMakeError.log".
Note that QT_QMAKE_EXECUTABLE is empty because it is a plain C project. Setting it has no influence on the result.
This is the output of CMake if the parameter -DCMAKE_CXX_COMPILER is omitted (invoked in a shell after . ${HOME}/oe-core/sdk/environment-setup-armv7at2hf-vfp-neon-angstrom-linux-gnueabi:
/usr/bin/cmake /home/oe/test '-GCodeBlocks - Unix Makefiles' -DQT_QMAKE_EXECUTABLE:STRING=
-- The C compiler identification is GNU 5.2.1
-- The CXX compiler identification is GNU 5.2.1
-- Check for working C compiler: /home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc
-- Check for working C compiler: /home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-g++
-- Check for working CXX compiler: /home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Warning (dev) at CMakeLists.txt:4 (add_executable):
Policy CMP0037 is not set: Target names should not be reserved and should
match a validity pattern. Run "cmake --help-policy CMP0037" for policy
details. Use the cmake_policy command to set the policy and suppress this
warning.
The target name "test" is reserved or not valid for certain CMake features,
such as generator expressions, and may result in undefined behavior.
This warning is for project developers. Use -Wno-dev to suppress it.
-- Configuring done
-- Generating done
CMake Warning:
Manually-specified variables were not used by the project:
QT_QMAKE_EXECUTABLE
-- Build files have been written to: /home/oe/test/build
This is a diff of the CMakeCache.txt files. +++ build.qt/CMakeCache.txt is generated by Qt Creator, --- build/CMakeCache.txt is generated by the working cmake call with omitted -DCMAKE_CXX_COMPILER parameter:
--- build/CMakeCache.txt 2016-11-29 08:48:39.510236618 +0100
+++ build.qt/CMakeCache.txt 2016-11-29 08:52:48.425795608 +0100
@@ -31,11 +31,8 @@
//Enable/Disable color output during build.
CMAKE_COLOR_MAKEFILE:BOOL=ON
-//CXX compiler
-CMAKE_CXX_COMPILER:FILEPATH=/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-g++
-
-//First argument to CXX compiler
-CMAKE_CXX_COMPILER_ARG1:STRING= -march=armv7-a -mthumb -mthumb-interwork -mfloat-abi=hard -mfpu=neon --sysroot=/home/oe/oe-core/sdk/sysroots/armv7at2hf-vfp-neon-angstrom-linux-gnueabi
+//No help, variable specified on the command line.
+CMAKE_CXX_COMPILER:STRING=/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc
//Flags used by the compiler during all build types.
CMAKE_CXX_FLAGS:STRING=' -O2 -pipe -g -feliminate-unused-debug-types '
@@ -257,9 +254,9 @@
//Name of external makefile project generator.
CMAKE_EXTRA_GENERATOR:INTERNAL=CodeBlocks
//CXX compiler system defined macros
-CMAKE_EXTRA_GENERATOR_CXX_SYSTEM_DEFINED_MACROS:INTERNAL=
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;__gnu_linux__;1;__linux;1;__linux__;1;linux;1;__unix;1;__unix__;1;unix;1;__ELF__;1;_GNU_SOURCE;1
//CXX compiler system include directories
-CMAKE_EXTRA_GENERATOR_CXX_SYSTEM_INCLUDE_DIRS:INTERNAL=
+CMAKE_EXTRA_GENERATOR_CXX_SYSTEM_INCLUDE_DIRS:INTERNAL=/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/lib/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/include;/home/oe/oe-core/sdk/sysroots/x86_64-angstromsdk-linux/usr/lib/arm-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/5.2.1/include-fixed
//C compiler system defined macros
CMAKE_EXTRA_GENERATOR_C_SYSTEM_DEFINED_MACROS:INTERNAL=
//C compiler system include directories
Is there a way to use Qt Creator and the arm-angstrom-linux-gnueabi toolchain with CMake managed projects, too?