Reference <a class="issue-link js-issue-link" data-error-text=

FYI, I have a very basic CMakeLists.txt in PR <a clas

As of <a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://

<a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/us

Similar for VS2019. <div class="snippet-clipboard-content notranslate position-rel

CMake build under macOS ARM64 (macOS 14.3.1, Mac Mini M1). <div class="snippet-cli

CMake under Linux. <div class="snippet-clipboard-content notranslate position-rela

Add CMake support,about avrdudes/libserialport

Comments (8)

ndim commented on August 25, 2024 1

FYI, I have a very basic CMakeLists.txt in PR #3.

from libserialport.

ndim commented on August 25, 2024 1

As of ndim@0574156, the CI builds are succeeding:
https://github.com/ndim/libserialport/actions/runs/8069048688

This includes cmake ("cm") and autotools ("at") builds:

linux-x86_64 (at, cm)
linux (i386, armhf, arm64) x (cm, at)
macos-x86_64 (cm, at)
msvc (cm only)
msys2+mingw (mingw64, ucrt64, clang64) (cm, at)

The commit series and the resulting tree need massive cleanups, but at least we now have a known good state, at least in the sense of "it succeeds building something".

from libserialport.

mcuee commented on August 25, 2024

vcpkg does not have the port yet. There was a new port request but nobody has done the port yet.

microsoft/vcpkg#19390

from libserialport.

mcuee commented on August 25, 2024

@ndim

Nice. You are almost there already.

Need to add something similar to avrdude, for MinGW.

if(WIN32 OR MINGW)
    list(APPEND EXTRA_WINDOWS_RESOURCES "${PROJECT_BINARY_DIR}/src/windows.rc")
    list(APPEND EXTRA_WINDOWS_LIBRARIES setupapi hid ws2_32)
endif()

Build log

MINGW64 /c/work/avr/avrdude_test/avrdude_libserialport_pr3
$ cmake -B build_cmake_mingw64
-- Building for: Ninja
-- The C compiler identification is GNU 13.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/msys64/mingw64/bin/cc.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Configuring done (5.7s)
-- Generating done (0.0s)
-- Build files have been written to: C:/work/avr/avrdude_test/avrdude_libserialport_pr3/build_cmake_mingw64

$ cmake --build build_cmake_mingw64
[2/2] Linking C shared library libserialport.dll
FAILED: libserialport.dll liblibserialport.dll.a
C:\WINDOWS\system32\cmd.exe /C "cd . && C:\msys64\mingw64\bin\cc.exe    -shared -o libserialport.dll -Wl,--out-implib,liblibserialport.dll.a -Wl,--major-image-version,0,--minor-image-version,1 CMakeFiles/libserialport.dir/windows.c.obj  -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32 && cd ."
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x9f2): undefined reference to `__imp_CM_Get_Parent'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xa17): undefined reference to `__imp_CM_Get_Device_IDA'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xc52): undefined reference to `__imp_SetupDiGetClassDevsA'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xca1): undefined reference to `__imp_SetupDiEnumDeviceInterfaces'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xcdb): undefined reference to `__imp_SetupDiGetDeviceInterfaceDetailA'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xd45): undefined reference to `__imp_SetupDiGetDeviceInterfaceDetailA'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xd74): undefined reference to `__imp_CM_Get_Parent'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xe4e): undefined reference to `__imp_SetupDiEnumDeviceInfo'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xe66): undefined reference to `__imp_SetupDiDestroyDeviceInfoList'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xec2): undefined reference to `__imp_SetupDiGetClassDevsA'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xeda): undefined reference to `sp_last_error_message'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xf23): undefined reference to `sp_free_error_message'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0xf70): undefined reference to `__imp_SetupDiOpenDevRegKey'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x1073): undefined reference to `__imp_CM_Get_Parent'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x10b1): undefined reference to `__imp_CM_Get_DevNode_Registry_PropertyA'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x1142): undefined reference to `__imp_CM_Get_DevNode_Registry_PropertyA'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x1170): undefined reference to `__imp_CM_Get_Parent'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x11f9): undefined reference to `__imp_CM_Get_Device_IDA'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x1273): undefined reference to `__imp_CM_Get_DevNode_Registry_PropertyA'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x133a): undefined reference to `__imp_CM_Get_DevNode_Registry_PropertyA'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x13ba): undefined reference to `__imp_CM_Get_Parent'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x150f): undefined reference to `__imp_SetupDiEnumDeviceInfo'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x152d): undefined reference to `__imp_SetupDiDestroyDeviceInfoList'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x15ff): undefined reference to `sp_last_error_message'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x163f): undefined reference to `sp_free_error_message'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x16f7): undefined reference to `sp_last_error_message'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x1737): undefined reference to `sp_free_error_message'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.text+0x18de): undefined reference to `list_append'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/libserialport.dir/windows.c.obj:windows.c:(.rdata$.refptr.sp_debug_handler[.refptr.sp_debug_handler]+0x0): undefined reference to `sp_debug_handler'
collect2.exe: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

from libserialport.

mcuee commented on August 25, 2024

Similar for VS2019.

PS C:\work\avr\avrdude_test\avrdude_libserialport_pr3> cmake -B .\build_cmake_vs2019
-- Building for: Visual Studio 16 2019
-- Selecting Windows SDK version 10.0.22000.0 to target Windows 10.0.19045.
-- The C compiler identification is MSVC 19.29.30153.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/cl.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: C:/work/avr/avrdude_test/avrdude_libserialport_pr3/build_cmake_vs2019
PS C:\work\avr\avrdude_test\avrdude_libserialport_pr3> cmake --build .\build_cmake_vs2019
Microsoft (R) Build Engine version 16.11.2+f32259642 for .NET Framework
Copyright (C) Microsoft Corporation. All rights reserved.

  Checking Build System
  Building Custom Rule C:/work/avr/avrdude_test/avrdude_libserialport_pr3/CMakeLists.txt
  windows.c
C:\work\avr\avrdude_test\avrdude_libserialport_pr3\libserialport.h(292,1): warning C4005: 'SP_API': macro redefinition
[C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\config.h(17): message : see previous definition o
f 'SP_API' [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol __imp_sp_last_error_message referenced in function get_port_det
ails [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol __imp_sp_free_error_message referenced in function get_port_det
ails [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol __imp_SetupDiEnumDeviceInfo referenced in function get_port_det
ails [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol __imp_SetupDiDestroyDeviceInfoList referenced in function get_p
ort_details [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol __imp_SetupDiEnumDeviceInterfaces referenced in function get_us
b_details [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol __imp_SetupDiGetDeviceInterfaceDetailA referenced in function g
et_usb_details [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol __imp_SetupDiGetClassDevsA referenced in function get_port_deta
ils [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol __imp_SetupDiOpenDevRegKey referenced in function get_port_deta
ils [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol __imp_CM_Get_Device_IDA referenced in function get_port_details
 [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol __imp_CM_Get_DevNode_Registry_PropertyA referenced in function
get_port_details [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol __imp_CM_Get_Parent referenced in function get_port_details [C:
\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2019: unresolved external symbol list_append referenced in function list_ports [C:\work\avr\avrd
ude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]
windows.obj : error LNK2001: unresolved external symbol sp_debug_handler [C:\work\avr\avrdude_test\avrdude_libserialpor
t_pr3\build_cmake_vs2019\libserialport.vcxproj]
C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\Debug\libserialport.dll : fatal error LNK1120: 13
 unresolved externals [C:\work\avr\avrdude_test\avrdude_libserialport_pr3\build_cmake_vs2019\libserialport.vcxproj]

from libserialport.

mcuee commented on August 25, 2024

CMake build under macOS ARM64 (macOS 14.3.1, Mac Mini M1).

mcuee@mcuees-Mac-mini libserialport_ndim % cmake -B build_cmake
-- The C compiler identification is AppleClang 15.0.0.15000100
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Configuring done (0.4s)
-- Generating done (0.0s)
-- Build files have been written to: /Users/mcuee/build/avr/libserialport_ndim/build_cmake
mcuee@mcuees-Mac-mini libserialport_ndim % cmake --build build_cmake 
[ 25%] Building C object CMakeFiles/libserialport.dir/serialport.c.o
[ 50%] Building C object CMakeFiles/libserialport.dir/timing.c.o
[ 75%] Building C object CMakeFiles/libserialport.dir/macosx.c.o
[100%] Linking C shared library libserialport.dylib
[100%] Built target libserialport

from libserialport.

mcuee commented on August 25, 2024

CMake under Linux.

mcuee@UbuntuSwift3 ~/build/avr/libserialport_ndim (add-version-suffix)$ cmake -B build_cmake
-- The C compiler identification is GNU 9.4.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Configuring done (0.4s)
-- Generating done (0.0s)
-- Build files have been written to: /home/mcuee/build/avr/libserialport_ndim/build_cmake
mcuee@UbuntuSwift3 ~/build/avr/libserialport_ndim (add-version-suffix)$ cmake --build build_cmake/
[ 20%] Building C object CMakeFiles/libserialport.dir/serialport.c.o
[ 40%] Building C object CMakeFiles/libserialport.dir/timing.c.o
[ 60%] Building C object CMakeFiles/libserialport.dir/linux.c.o
[ 80%] Building C object CMakeFiles/libserialport.dir/linux_termios.c.o
[100%] Linking C shared library libserialport.so
[100%] Built target libserialport

mcuee@UbuntuSwift3 ~/build/avr/libserialport_ndim (add-version-suffix)$ sudo cmake --build build_cmake --target install
[100%] Built target libserialport
Install the project...
-- Install configuration: ""
-- Installing: /usr/local/lib/pkgconfig/libserialport.pc
-- Installing: /usr/local/lib/libserialport.so.0.1.0
-- Installing: /usr/local/lib/libserialport.so.0
-- Installing: /usr/local/lib/libserialport.so
-- Installing: /usr/local/include/libserialport.h

from libserialport.

mcuee commented on August 25, 2024

Not so sure how to carry out cross-compiler under macOS though.
arduino/avrdude-packing#31 (comment)

root@c44bc932da28:~/build/libserialport_cmake# cmake -B build_darwin -DCMAKE_C_COMPILER=o64-clang -DCMAKE_EXE_LINKER_FLAGS="-L/opt/lib/x86_64-apple-darwin13/lib" -DCMAKE_C_FLAGS="-I/opt/lib/x86_64-apple-darwin13/include -pthread -framework Foundation -framework IOKit -framework Cocoa -framework Security" -DCMAKE_PREFIX_PATH=/opt/lib/x86_64-apple-darwin13    -- The C compiler identification is Clang 10.0.0
-- Check for working C compiler: /opt/osxcross/target/bin/o64-clang
-- Check for working C compiler: /opt/osxcross/target/bin/o64-clang -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /root/build/libserialport_cmake/build_darwin
root@c44bc932da28:~/build/libserialport_cmake# cmake -build build_darwin
-- Configuring done
-- Generating done
-- Build files have been written to: /root/build/libserialport_cmake/build_darwin
root@c44bc932da28:~/build/libserialport_cmake# cmake -B build_darwin -DCMAKE_C_COMPILER=o64-clang -DCMAKE_EXE_LINKER_FLAGS="-L/opt/lib/x86_64-apple-darwin13/lib" -DCMAKE_C_FLAGS="-I/opt/lib/x86_64-apple-darwin13/include -pthread -framework Foundation -framework IOKit -framework Cocoa -framework Security" -DCMAKE_PREFIX_PATH=/opt/lib/x86_64-apple-darwin13
-- Configuring done
-- Generating done
-- Build files have been written to: /root/build/libserialport_cmake/build_darwin
root@c44bc932da28:~/build/libserialport_cmake# cmake --build build_darwin
Scanning dependencies of target libserialport
[ 20%] Building C object CMakeFiles/libserialport.dir/serialport.c.o
clang: warning: -framework Foundation: 'linker' input unused [-Wunused-command-line-argument]
clang: warning: -framework IOKit: 'linker' input unused [-Wunused-command-line-argument]
clang: warning: -framework Cocoa: 'linker' input unused [-Wunused-command-line-argument]
clang: warning: -framework Security: 'linker' input unused [-Wunused-command-line-argument]
[ 40%] Building C object CMakeFiles/libserialport.dir/timing.c.o
clang: warning: -framework Foundation: 'linker' input unused [-Wunused-command-line-argument]
clang: warning: -framework IOKit: 'linker' input unused [-Wunused-command-line-argument]
clang: warning: -framework Cocoa: 'linker' input unused [-Wunused-command-line-argument]
clang: warning: -framework Security: 'linker' input unused [-Wunused-command-line-argument]
[ 60%] Building C object CMakeFiles/libserialport.dir/linux.c.o
clang: warning: -framework Foundation: 'linker' input unused [-Wunused-command-line-argument]
clang: warning: -framework IOKit: 'linker' input unused [-Wunused-command-line-argument]
clang: warning: -framework Cocoa: 'linker' input unused [-Wunused-command-line-argument]
clang: warning: -framework Security: 'linker' input unused [-Wunused-command-line-argument]
/root/build/libserialport_cmake/linux.c:198:23: error: incomplete definition of type 'struct dirent'
        char buf[sizeof(entry->d_name) + 23];
                        ~~~~~^
/root/build/libserialport_cmake/linux.c:193:9: note: forward declaration of 'struct dirent'
        struct dirent *entry;
               ^
/root/build/libserialport_cmake/linux.c:200:2: error: use of undeclared identifier 'DIR'
        DIR *dir;
        ^
/root/build/libserialport_cmake/linux.c:200:7: error: use of undeclared identifier 'dir'; did you mean 'div'?
        DIR *dir;
             ^~~
             div
/opt/osxcross/target/bin/../SDK/MacOSX10.15.sdk/usr/include/stdlib.h:144:8: note: 'div' declared here
div_t    div(int, int) __pure2;
         ^
/root/build/libserialport_cmake/linux.c:205:14: warning: implicit declaration of function 'opendir' is invalid in C99 [-Wimplicit-function-declaration]
        if (!(dir = opendir("/sys/class/tty")))
                    ^
/root/build/libserialport_cmake/linux.c:205:8: error: use of undeclared identifier 'dir'
        if (!(dir = opendir("/sys/class/tty")))
              ^
/root/build/libserialport_cmake/linux.c:209:18: warning: implicit declaration of function 'readdir' is invalid in C99 [-Wimplicit-function-declaration]
        while ((entry = readdir(dir))) {
                        ^
/root/build/libserialport_cmake/linux.c:209:26: error: use of undeclared identifier 'dir'; did you mean 'div'?
        while ((entry = readdir(dir))) {
                                ^~~
                                div
/opt/osxcross/target/bin/../SDK/MacOSX10.15.sdk/usr/include/stdlib.h:144:8: note: 'div' declared here
div_t    div(int, int) __pure2;
         ^
/root/build/libserialport_cmake/linux.c:209:16: warning: incompatible integer to pointer conversion assigning to 'struct dirent *' from 'int' [-Wint-conversion]
        while ((entry = readdir(dir))) {
                      ^ ~~~~~~~~~~~~
/root/build/libserialport_cmake/linux.c:210:56: error: incomplete definition of type 'struct dirent'
                snprintf(buf, sizeof(buf), "/sys/class/tty/%s", entry->d_name);
                                                                ~~~~~^
/opt/osxcross/target/bin/../SDK/MacOSX10.15.sdk/usr/include/secure/_stdio.h:57:62: note: expanded from macro 'snprintf'
  __builtin___snprintf_chk (str, len, 0, __darwin_obsz(str), __VA_ARGS__)
                                                             ^~~~~~~~~~~
/root/build/libserialport_cmake/linux.c:193:9: note: forward declaration of 'struct dirent'
        struct dirent *entry;
               ^
/root/build/libserialport_cmake/linux.c:214:64: error: incomplete definition of type 'struct dirent'
                        snprintf(buf, sizeof(buf), "/sys/class/tty/%s/device", entry->d_name);
                                                                               ~~~~~^
/opt/osxcross/target/bin/../SDK/MacOSX10.15.sdk/usr/include/secure/_stdio.h:57:62: note: expanded from macro 'snprintf'
  __builtin___snprintf_chk (str, len, 0, __darwin_obsz(str), __VA_ARGS__)
                                                             ^~~~~~~~~~~
/root/build/libserialport_cmake/linux.c:193:9: note: forward declaration of 'struct dirent'
        struct dirent *entry;
               ^
/root/build/libserialport_cmake/linux.c:221:48: error: incomplete definition of type 'struct dirent'
                snprintf(name, sizeof(name), "/dev/%s", entry->d_name);
                                                        ~~~~~^
/opt/osxcross/target/bin/../SDK/MacOSX10.15.sdk/usr/include/secure/_stdio.h:57:62: note: expanded from macro 'snprintf'
  __builtin___snprintf_chk (str, len, 0, __darwin_obsz(str), __VA_ARGS__)
                                                             ^~~~~~~~~~~
/root/build/libserialport_cmake/linux.c:193:9: note: forward declaration of 'struct dirent'
        struct dirent *entry;
               ^
/root/build/libserialport_cmake/linux.c:256:2: warning: implicit declaration of function 'closedir' is invalid in C99 [-Wimplicit-function-declaration]
        closedir(dir);
        ^
/root/build/libserialport_cmake/linux.c:256:11: error: use of undeclared identifier 'dir'; did you mean 'div'?
        closedir(dir);
                 ^~~
                 div
/opt/osxcross/target/bin/../SDK/MacOSX10.15.sdk/usr/include/stdlib.h:144:8: note: 'div' declared here
div_t    div(int, int) __pure2;
         ^
4 warnings and 9 errors generated.
make[2]: *** [CMakeFiles/libserialport.dir/build.make:89: CMakeFiles/libserialport.dir/linux.c.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:76: CMakeFiles/libserialport.dir/all] Error 2
make: *** [Makefile:130: all] Error 2

from libserialport.

Add CMake support about libserialport HOT 8 OPEN

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