Ich sitze nun schon einige Zeit an CMake und versuche mein Programm auf
ein embedded Linux crosscompilieren.
Meine Ordnerstruktur sieht folgendermassen aus:
1 | Topdir/
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2 | -CMakeLists.txt
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3 | -toolchain-arm-angstrom-linux-gnueabi.cmake
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4 | +build/
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5 | +src/
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6 | -CMakeLists.txt
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7 | -sourcefiles.cpp
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8 | -headerfiles.h
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9 | +gen/
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10 | -CMakeLists.txt
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11 | -sourcefiles.cpp
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12 | -headerfiles.h
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13 | +libs/
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14 | -CMakeLists.txt
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15 | +subfolders/
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Im buildverzeichnis rufe ich $ cmake .. auf und danach $ make. Dies
funktioniert einwandfrei und ich kann nativ für x86 die Library builden.
Wenn ich aber mittels
1 | $ cmake -DCMAKE_TOOLCHAIN_FILE=../toolchain-arm-angstrom-linux-gnueabi.cmake ..
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2 | $ make
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ausführe kommt folgende Fehlermeldung:
1 | In file included from /home/user/cmake/topdir/src/ComponentImpl.h:11:0,
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2 | from /home/user/cmake/topdir/src/ComponentImpl.cpp:8:
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3 | /home/user/cmake/topdir/src/IComponent.hpp:11:18: fatal error: string: No such file or directory
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4 | compilation terminated.
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5 | make[2]: *** [CMakeFiles/topdir.dir/src/ComponentImpl.cpp.o] Error 1
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6 | make[1]: *** [CMakeFiles/topdir.dir/all] Error 2
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7 | make: *** [all] Error 2
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Ich komme aber einfach nicht darauf woran das liegen kann. Anbei die
erste CMakeLists.txt aus topdir/
1 | # Minimal required CMake-Version
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2 | cmake_minimum_required(VERSION 2.6)
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3 |
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4 | # Name project and select toolchain
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5 | project (IFM2-Infrastructure)
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6 | set(CMAKE_BUILD_TYPE Debug)
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7 | set(CMAKE_SYSTEM_NAME Linux)
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8 |
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9 | # CMake should also search in this subfolders for CMakeLists
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10 | add_subdirectory(src)
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11 | add_subdirectory(gen)
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12 | add_subdirectory(libs)
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13 |
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14 | # Include Files are located in
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15 | include_directories("src")
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16 | include_directories("gen")
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17 | include_directories("libs")
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18 |
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19 | #Collect variable names from subdirs
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20 | set(libSrcs
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21 | ${library_IFM2SRC}
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22 | ${library_IFM2GEN}
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23 | ${library_IFM2LIBS}
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24 | )
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25 |
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26 | #Compiler flags
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27 | set(CMAKE_CXX_FLAGS "-g -Wall")
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28 | set(BUILD_SHARED_LIBS ON)
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29 |
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30 | #create library and link it to other
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31 | set(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/out)
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32 | add_library(IFM2-Infrastructure SHARED ${libSrcs})
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33 | target_link_libraries(IFM2-Infrastructure -lrt -lpthread)
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und das toolchain file
1 | # this one is important
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2 | set(CMAKE_SYSTEM_NAME Linux)
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3 |
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4 | INCLUDE(CMakeForceCompiler)
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5 | # specify the cross compiler
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6 | CMAKE_FORCE_C_COMPILER(/local/build/aba/bebuild21/toolchain/sysroots/i686-angstromsdk-linux/usr/bin/armv7ahf-vfp-neon-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc GNU)
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7 | CMAKE_FORCE_CXX_COMPILER(/local/build/aba/bebuild21/toolchain/sysroots/i686-angstromsdk-linux/usr/bin/armv7ahf-vfp-neon-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-g++ GNU)
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8 |
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9 | # where is the target environment
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10 | set(CMAKE_FIND_ROOT_PATH
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11 | /local/build/aba/bebuild21/toolchain/sysroots/armv7ahf-vfp-neon-angstrom-linux-gnueabi
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12 | )
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13 |
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14 | # search for programs in the build host directories
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15 | set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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16 | # for libraries and headers in the target directories
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17 | set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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18 | set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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