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Compiler query should handle GCC-like compilers that support C but not C++ (i.e. Microchip's XC16) #7534

Open ReimuNotMoe opened 3 years ago

ReimuNotMoe commented 3 years ago

Bug type: Language Service

Describe the bug

System include path can't be pulled from Microchip's XC16 compiler.

I have a PIC24 MCU project which uses CMake and worked well in CLion.

When I open the project in VSCode, it can be correctly built by clicking on the Build button. However, all #include <xc.h> lines are red underlined.

The compiler path is already set in CMakeLists.txt. I tried to mess with compilerPath and includePath in c_cpp_properties.json, and none of them worked.

The XC16 is a modified GCC and its usages are exactly same as GCC.

Steps to reproduce

  1. Change compilerPath in c_cpp_properties.json to /opt/microchip/xc16/v1.70/bin/xc16-gcc
  2. Nothing changed. All #include <xc.h> lines are still red underlined.
  3. Add /opt/microchip/xc16/v1.70/support/** (which contains the xc.h file) to includePath in c_cpp_properties.json
  4. Nothing changed as well. All #include <xc.h> lines are still red underlined.
  5. Run C/C++: Log Diagnostics, and there are no lines begin with /opt/microchip/xc16/v1.70/support/.

Expected behavior There shouldn't be any red underlines in code.

Code sample and logs

int main(){ while (1) { LATFbits.LATF1 = !LATFbits.LATF1; // Blink a LED } }

- CMakeLists part of setting the compiler

if (XC16_TARGET_CPU) message("-- FindXC16: CPU set to ${XC16_TARGET_CPU}") set(XC16_COMPILER_OPTIONS -mcpu=${XC16_TARGET_CPU})

if (NOT XC16_DISABLE_DEFAULT_LINKER_SCRIPT)
    message("-- FindXC16: Using default linker script for device ${XC16_TARGET_CPU}")
    set(XC16_LINKER_OPTIONS --script=p${XC16_TARGET_CPU}.gld)
else()
    message("-- FindXC16: Default linker script disabled")
endif()

endif()

if (UNIX) if (APPLE) set(XC16_DEFAULT_SEARCH_PATH /Applications/microchip/xc16/) else() set(XC16_DEFAULT_SEARCH_PATH /opt/microchip/xc16/) endif() endif()

if (WIN32) set(XC16_DEFAULT_SEARCH_PATH "D:/Microchip/xc16/") endif()

if (NOT XC16_SEARCH_PATH) message("-- FindXC16: Variable XC16_SEARCH_PATH isn't defined, default to ${XC16_DEFAULT_SEARCH_PATH}") set(XC16_SEARCH_PATH ${XC16_DEFAULT_SEARCH_PATH}) endif()

set(CMAKE_C_LINK_FLAGS "")

file(GLOB_RECURSE XC16_C_COMPILER ${XC16_SEARCH_PATH}/xc16-gcc) if (XC16_C_COMPILER) message("-- FindXC16: Found xc16-gcc at ${XC16_C_COMPILER}") set(CMAKE_C_COMPILER ${XC16_C_COMPILER}) set(CMAKE_ASM_COMPILER ${XC16_C_COMPILER}) endif()

file(GLOB_RECURSE XC16_CXX_COMPILER ${XC16_SEARCH_PATH}/xc16-g++) if (XC16_CXX_COMPILER) message("-- FindXC16: Found xc16-g++ at ${XC16_CXX_COMPILER}") set(CMAKE_CXX_COMPILER ${XC16_CXX_COMPILER}) else() message("-- FindXC16: xc16-g++ not found, C++ support disabled") endif()

file(GLOB_RECURSE XC16_AR ${XC16_SEARCH_PATH}/xc16-ar) if (XC16_AR) message("-- FindXC16: Found xc16-ar at ${XC16_AR}") set(CMAKE_AR ${XC16_AR}) endif()

file(GLOB_RECURSE XC16_OBJCOPY ${XC16_SEARCH_PATH}/xc16-objcopy) if (XC16_OBJCOPY) message("-- FindXC16: Found xc16-objcopy at ${XC16_OBJCOPY}") set(CMAKE_OBJCOPY ${XC16_OBJCOPY}) endif()

file(GLOB_RECURSE XC16_OBJDUMP ${XC16_SEARCH_PATH}/xc16-objdump) if (XC16_OBJDUMP) message("-- FindXC16: Found xc16-objdump at ${XC16_OBJDUMP}") set(CMAKE_OBJDUMP ${XC16_OBJDUMP}) endif()

file(GLOB_RECURSE XC16_BIN2HEX ${XC16_SEARCH_PATH}/xc16-bin2hex) if (XC16_BIN2HEX) message("-- FindXC16: Found xc16-bin2hex at ${XC16_BIN2HEX}") set(CMAKE_OBJDUMP ${XC16_BIN2HEX}) endif()

add_compile_options(${XC16_COMPILER_OPTIONS} -Wcast-align -omf=elf -DXPRJ_default=default -legacy-libc -msmart-io=1 -msfr-warn=off)

add_link_options(-Wl,--defsym=__MPLAB_BUILD=1,${XC16_LINKER_OPTIONS},--stack=16,--check-sections,--data-init,--pack-data,--handles,--isr,--no-gc-sections,--fill-upper=0,--stackguard=16,--no-force-link,--smart-io,--report-mem)

- CMake output

[variant] Loaded new set of variants [kit] Successfully loaded 8 kits from /root/.local/share/CMakeTools/cmake-tools-kits.json [main] Configuring folder: PICo24_SDK [cmake] -- FindXC16: Variable XC16_SEARCH_PATH isn't defined, default to /opt/microchip/xc16/ [cmake] -- FindXC16: Found xc16-gcc at /opt/microchip/xc16//v1.70/bin/xc16-gcc [cmake] -- FindXC16: Found xc16-g++ at /opt/microchip/xc16//v1.70/bin/xc16-g++ [cmake] -- FindXC16: Found xc16-ar at /opt/microchip/xc16//v1.70/bin/xc16-ar [cmake] -- FindXC16: Found xc16-objcopy at /opt/microchip/xc16//v1.70/bin/xc16-objcopy [cmake] -- FindXC16: Found xc16-objdump at /opt/microchip/xc16//v1.70/bin/xc16-objdump [cmake] -- FindXC16: Found xc16-bin2hex at /opt/microchip/xc16//v1.70/bin/xc16-bin2hex [cmake] -- PICo24: Using board: PotatoPi_PICo24, CPU: 24FJ256GB206 [cmake] Configuring done [cmake] Generating done

- Configurations in `c_cpp_properties.json`

{ "configurations": [ { "name": "Linux", "includePath": [ "/opt/microchip/xc16/v1.70/support/", "${workspaceFolder}/" ], "browse" :{ "path": [ "/opt/microchip/xc16/v1.70/support/", "${workspaceFolder}/" ] }, "defines": [], "compilerPath": "/opt/microchip/xc16/v1.70/bin/xc16-gcc", "cStandard": "c99", "intelliSenseMode": "linux-gcc-x64", "configurationProvider": "ms-vscode.cmake-tools", "compileCommands": "${workspaceFolder}/build/compile_commands.json" } ], "version": 4 }


- Logs from running `C/C++: Log Diagnostics` from the VS Code command palette

-------- Diagnostics - 5/17/2021, 7:43:23 PM Version: 1.3.1 Current Configuration: { "name": "Linux", "includePath": [ "/opt/microchip/xc16/v1.70/support/", "${workspaceFolder}/" ], "browse": { "path": [ "/opt/microchip/xc16/v1.70/support/", "${workspaceFolder}/" ], "limitSymbolsToIncludedHeaders": true }, "defines": [], "compilerPath": "/opt/microchip/xc16/v1.70/bin/xc16-gcc", "cStandard": "c99", "intelliSenseMode": "linux-gcc-x64", "configurationProvider": "ms-vscode.cmake-tools", "compileCommands": "${workspaceFolder}/build/compile_commands.json", "compilerArgs": [], "intelliSenseModeIsExplicit": true, "cStandardIsExplicit": true, "cppStandardIsExplicit": true, "compilerPathIsExplicit": true } Custom browse configuration: { "browsePath": [ "/root/Devel/PICo24_SDK/Boards/PotatoPi_PICo24", "/root/Devel/PICo24_SDK/Components", "/root/Devel/PICo24_SDK/Components/PICo24/Core", "/root/Devel/PICo24_SDK/Components/PICo24", "/root/Devel/PICo24_SDK/Components/PICo24/Peripherals/EXT_INT", "/root/Devel/PICo24_SDK/Components/PICo24/Peripherals/I2C", "/root/Devel/PICo24_SDK/Components/PICo24/Peripherals/SPI", "/root/Devel/PICo24_SDK/Components/PICo24/Peripherals/UART", "/root/Devel/PICo24_SDK/Components/PICo24/Peripherals/USB/Device", "/root/Devel/PICo24_SDK/Components/PICo24/Peripherals/USB/Host", "/root/Devel/PICo24_SDK/Components/PICo24/Peripherals/USB", "/root/Devel/PICo24_SDK/Components/PICo24/UnixAPI", "/root/Devel/PICo24_SDK" ], "standard": "gnu99", "compilerPath": "/opt/microchip/xc16/v1.70/bin/xc16-gcc", "compilerArgs": [ "-fno-lto", "-fno-strict-aliasing", "-Wcast-align", "-omf=elf", "-DXPRJ_default=default", "-legacy-libc", "-msmart-io=1", "-msfr-warn=off", "-g", "-Os", "-std=gnu99", "-mcpu=\\"24FJ256GB206\\"" ] } Custom configurations: [ /root/Devel/PICo24_SDK/main.c ] { "defines": [ "XPRJ_default=default" ], "standard": "gnu99", "includePath": [ "/root/Devel/PICo24_SDK/Boards/PotatoPi_PICo24", "/root/Devel/PICo24_SDK/Components" ], "compilerPath": "/opt/microchip/xc16/v1.70/bin/xc16-gcc", "compilerArgs": [ "-fno-lto", "-fno-strict-aliasing", "-Wcast-align", "-omf=elf", "-DXPRJ_default=default", "-legacy-libc", "-msmart-io=1", "-msfr-warn=off", "-g", "-Os", "-std=gnu99", "-mcpu=\\"24FJ256GB206\\"" ] } Translation Unit Mappings: [ /root/Devel/PICo24_SDK/main.c ]: /root/Devel/PICo24_SDK/Components/PICo24/PICo24.h Translation Unit Configurations: [ /root/Devel/PICo24_SDK/main.c ]: Process ID: 4035 Memory Usage: 20 MB Includes: /root/Devel/PICo24_SDK/Boards/PotatoPi_PICo24 /root/Devel/PICo24_SDK/Components /usr/include/x86_64-linux-gnu/c++/8 /usr/include/newlib/c++/7.3.1 /usr/include/c++/8 /usr/local/include /usr/lib/llvm-7/lib/clang/7.0.1/include /usr/include/x86_64-linux-gnu /usr/include/newlib /usr/include Defines: XPRJ_default=default XPRJ_default=default Standard Version: c99 IntelliSense Mode: linux-gcc-x64 Other Flags: --gcc --gnu_version=100000 Total Memory Usage: 20 MB Browse Paths from compile_commands.json, from workspace folder: /root/Devel/PICo24_SDK /root/Devel/PICo24_SDK /root/Devel/PICo24_SDK/Boards/PotatoPi_PICo24 /root/Devel/PICo24_SDK/Components /root/Devel/PICo24_SDK/Components/PICo24 /root/Devel/PICo24_SDK/Components/PICo24/Core /root/Devel/PICo24_SDK/Components/PICo24/Peripherals/EXT_INT /root/Devel/PICo24_SDK/Components/PICo24/Peripherals/I2C /root/Devel/PICo24_SDK/Components/PICo24/Peripherals/SPI /root/Devel/PICo24_SDK/Components/PICo24/Peripherals/UART /root/Devel/PICo24_SDK/Components/PICo24/Peripherals/USB /root/Devel/PICo24_SDK/Components/PICo24/Peripherals/USB/Device /root/Devel/PICo24_SDK/Components/PICo24/Peripherals/USB/Host /root/Devel/PICo24_SDK/Components/PICo24/UnixAPI

------- Workspace parsing diagnostics ------- Number of files discovered (not excluded): 49455

- Logs from [the language server logging](https://code.visualstudio.com/docs/cpp/enable-logging-cpp#_enable-logging-for-the-language-server)

File exclude: /.vscode File exclude: /.git File exclude: /.svn File exclude: /.hg File exclude: /CVS File exclude: /.DS_Store Search exclude: /node_modules Search exclude: /bower_components Search exclude: */.code-search Populate include completion cache. Discovering files... Processing folder (recursive): /usr/local/include/ Processing folder (recursive): /usr/lib/llvm-7/lib/clang/7.0.1/include/ Processing folder (recursive): /usr/include/ Processing folder (recursive): /root/Devel/PICo24_SDK/ Discovering files: 49486 file(s) processed 0 file(s) removed from database Done discovering files. Parsing open files... Parsing remaining files... Parsing: 0 files(s) processed Done parsing remaining files. Done parsing open files. idle loop: reparsing the active document Checking for syntax errors: file:///root/Devel/PICo24_SDK/main.c Queueing IntelliSense update for files in translation unit of: /root/Devel/PICo24_SDK/main.c Error squiggle count: 66 Update IntelliSense time (sec): 0.254 terminating child process: 6746 terminating child process: 6748 Checking for syntax errors: file:///root/Devel/PICo24_SDK/Components/PICo24/PICo24.h Queueing IntelliSense update for files in translation unit of: /root/Devel/PICo24_SDK/main.c idle loop: reparsing the active document Checking for syntax errors: file:///root/Devel/PICo24_SDK/Components/PICo24/PICo24.h Queueing IntelliSense update for files in translation unit of: /root/Devel/PICo24_SDK/main.c 0 include path suggestion(s) discovered. Error squiggle count: 65 Error squiggle count: 11 terminating child process: 6753 Update IntelliSense time (sec): 0.609 0 include path suggestion(s) discovered.

- `xc16-gcc` preprocessor output:

➜ build git:(master) ✗ /opt/microchip/xc16/v1.70/bin/xc16-gcc -v -E -dD empty.c Microchip Language Tool Shell Version 1.70 (Build date: Mar 2 2021). Copyright (c) 2012-2017 Microchip Technology Inc. All rights reserved Using built-in specs. COLLECT_GCC=/opt/microchip/xc16/v1.70/bin/bin/elf-gcc Target: pic30-elf Configured with: /home/xc16/release-builds/build_20210302/src/XC_GCC/gcc/configure --build=x86_64-linux --target=pic30-elf --disable-lto --disable-threads --disable-libmudflap --disable-libssp --disable-libstdcxx-pch --disable-hosted-libstdcxx --with-gnu-as --with-gnu-ld --enable-languages=c --disable-nls --disable-libgomp --without-headers --disable-libffi --disable-bootstrap --prefix=/bin --libexecdir=/bin --program-prefix=pic30- --with-libelf=/home/xc16/release-builds/build_20210302/bin/XC_GCC-elf-linux64-xclm/host-libs/ --with-dwarf2 --with-gmp=/home/xc16/release-builds/build_20210302/bin/XC_GCC-elf-linux64-xclm/host-libs --with-ppl=/home/xc16/release-builds/build_20210302/bin/XC_GCC-elf-linux64-xclm/host-libs --with-cloog=/home/xc16/release-builds/build_20210302/bin/XC_GCC-elf-linux64-xclm/host-libs --with-zlib=/home/xc16/release-builds/build_20210302/bin/XC_GCC-elf-linux64-xclm/host-libs --with-bugurl=https://www.microchip.com/technical-support --with-host-libstdcxx= Thread model: single gcc version 4.5.1 (XC16, Microchip v1.70) Build date: Mar 2 2021 (Microchip Technology) COLLECT_GCC_OPTIONS='-v' '-E' '-dD' '-mlegacy-libc' /opt/microchip/xc16/v1.70/bin/bin/../xc16-cc1 -E -quiet -v -iprefix /opt/microchip/xc16/v1.70/bin/bin/../pic30-elf/4.5.1/ empty.c -mresource=/opt/microchip/xc16/v1.70/bin/bin/../c30_device.info -omf=elf -mlegacy-libc -dD Microchip Language Tool Shell Version 1.70 (Build date: Mar 2 2021). Copyright (c) 2012-2017 Microchip Technology Inc. All rights reserved ignoring nonexistent directory "/opt/microchip/xc16/v1.70/bin/bin/../pic30-elf/4.5.1/include" ignoring nonexistent directory "/opt/microchip/xc16/v1.70/bin/bin/../pic30-elf/4.5.1/include-fixed" ignoring nonexistent directory "/opt/microchip/xc16/v1.70/bin/bin/../pic30-elf/4.5.1/../../../../pic30-elf/sys-include" ignoring nonexistent directory "/opt/microchip/xc16/v1.70/bin/bin/../pic30-elf/4.5.1/../../../../pic30-elf/include" ignoring nonexistent directory "/root/Downloads/xc16_v1.70.src/v1.70.src/install-linux64/bin/lib/gcc/pic30-elf/4.5.1/include" ignoring nonexistent directory "/root/Downloads/xc16_v1.70.src/v1.70.src/install-linux64/bin/lib/gcc/pic30-elf/4.5.1/include-fixed" ignoring nonexistent directory "/root/Downloads/xc16_v1.70.src/v1.70.src/install-linux64/bin/pic30-elf/sys-include" ignoring nonexistent directory "/root/Downloads/xc16_v1.70.src/v1.70.src/install-linux64/bin/pic30-elf/include"

include "..." search starts here:

include <...> search starts here:

/opt/microchip/xc16/v1.70/bin/bin/../../include/lega-c /opt/microchip/xc16/v1.70/bin/bin/../../support/generic/h End of search list.

1 "empty.c"

1 ""

define STDC 1

define __STDC_HOSTED__ 1

define GNUC 4

define __GNUC_MINOR__ 5

define __GNUC_PATCHLEVEL__ 1

define __SIZE_TYPE__ unsigned int

define __PTRDIFF_TYPE__ int

define __WCHAR_TYPE__ short unsigned int

define __WINT_TYPE__ unsigned int

define __INTMAX_TYPE__ long long int

define __UINTMAX_TYPE__ long long unsigned int

define __CHAR16_TYPE__ short unsigned int

define __CHAR32_TYPE__ unsigned int

define __GXX_ABI_VERSION 1002

define USING_SJLJ_EXCEPTIONS 1

define __SCHAR_MAX__ 127

define __SHRT_MAX__ 32767

define __INT_MAX__ 32767

define __LONG_MAX__ 2147483647L

define LONG_LONG_MAX 9223372036854775807LL

define __WCHAR_MAX__ 65535U

define __WCHAR_MIN__ 0U

define __WINT_MAX__ 65535U

define __WINT_MIN__ 0U

define __PTRDIFF_MAX__ 32767

define __SIZE_MAX__ 65535U

define __CHAR_BIT__ 8

define __INTMAX_MAX__ 9223372036854775807LL

define __INTMAX_C(c) c ## LL

define __UINTMAX_MAX__ 18446744073709551615ULL

define __UINTMAX_C(c) c ## ULL

define FLT_EVAL_METHOD 0

define DEC_EVAL_METHOD 2

define __FLT_RADIX__ 2

define FLT_MANT_DIG 24

define __FLT_DIG__ 6

define FLT_MIN_EXP (-125)

define __FLT_MIN_10_EXP__ (-37)

define FLT_MAX_EXP 128

define __FLT_MAX_10_EXP__ 38

define __FLT_MAX__ 3.4028234663852886e+38F

define __FLT_MIN__ 1.1754943508222875e-38F

define __FLT_EPSILON__ 1.1920928955078125e-7F

define FLT_DENORM_MIN 1.4012984643248171e-45F

define FLT_HAS_DENORM 1

define FLT_HAS_INFINITY 1

define __FLT_HAS_QUIET_NAN__ 1

define DBL_MANT_DIG 24

define __DBL_DIG__ 6

define DBL_MIN_EXP (-125)

define __DBL_MIN_10_EXP__ (-37)

define DBL_MAX_EXP 128

define __DBL_MAX_10_EXP__ 38

define __DBL_MAX__ ((double)3.4028234663852886e+38L)

define __DBL_MIN__ ((double)1.1754943508222875e-38L)

define __DBL_EPSILON__ ((double)1.1920928955078125e-7L)

define DBL_DENORM_MIN ((double)1.4012984643248171e-45L)

define DBL_HAS_DENORM 1

define DBL_HAS_INFINITY 1

define __DBL_HAS_QUIET_NAN__ 1

define LDBL_MANT_DIG 53

define __LDBL_DIG__ 15

define LDBL_MIN_EXP (-1021)

define __LDBL_MIN_10_EXP__ (-307)

define LDBL_MAX_EXP 1024

define __LDBL_MAX_10_EXP__ 308

define __DECIMAL_DIG__ 17

define __LDBL_MAX__ 1.7976931348623157e+308L

define __LDBL_MIN__ 2.2250738585072014e-308L

define __LDBL_EPSILON__ 2.2204460492503131e-16L

define LDBL_DENORM_MIN 4.9406564584124654e-324L

define LDBL_HAS_DENORM 1

define LDBL_HAS_INFINITY 1

define __LDBL_HAS_QUIET_NAN__ 1

define DEC32_MANT_DIG 7

define DEC32_MIN_EXP (-94)

define DEC32_MAX_EXP 97

define __DEC32_MIN__ 1E-95DF

define __DEC32_MAX__ 9.999999E96DF

define __DEC32_EPSILON__ 1E-6DF

define DEC32_SUBNORMAL_MIN 0.000001E-95DF

define DEC64_MANT_DIG 16

define DEC64_MIN_EXP (-382)

define DEC64_MAX_EXP 385

define __DEC64_MIN__ 1E-383DD

define __DEC64_MAX__ 9.999999999999999E384DD

define __DEC64_EPSILON__ 1E-15DD

define DEC64_SUBNORMAL_MIN 0.000000000000001E-383DD

define DEC128_MANT_DIG 34

define DEC128_MIN_EXP (-6142)

define DEC128_MAX_EXP 6145

define __DEC128_MIN__ 1E-6143DL

define __DEC128_MAX__ 9.999999999999999999999999999999999E6144DL

define __DEC128_EPSILON__ 1E-33DL

define DEC128_SUBNORMAL_MIN 0.000000000000000000000000000000001E-6143DL

define __REGISTER_PREFIX__

define USER_LABEL_PREFIX _

define VERSION "4.5.1 (XC16, Microchip v0_00) Build date: May 5 2021"

define GNUC_GNU_INLINE 1

define __NO_INLINE__ 1

define FINITE_MATH_ONLY 0

define __PRAGMA_REDEFINE_EXTNAME 1

define __SIZEOF_INT__ 2

define __SIZEOF_LONG__ 4

define SIZEOF_LONG_LONG 8

define __SIZEOF_SHORT__ 2

define __SIZEOF_FLOAT__ 4

define __SIZEOF_DOUBLE__ 4

define SIZEOF_LONG_DOUBLE 8

define SIZEOF_SIZE_T 2

define SIZEOF_WCHAR_T 2

define SIZEOF_WINT_T 2

define SIZEOF_PTRDIFF_T 2

define __SIZEOF_POINTER__ 2

define __OPTIMIZATION_LEVEL__ 0

define __LARGE_ARRAYS__ 0

define __BUILTIN_ITTYPE 1

define __C30_VERSION__ 0

define __XC16_VERSION 0

define __XC16_VERSION__ 0

define XC 1

define __XC16 1

define __C30 1

define __dsPIC30 1

define C30 1

define XC16 1

define dsPIC30 1

define __XC16ELF 1

define __C30ELF 1

define __dsPIC30ELF 1

define C30ELF 1

define XC16ELF 1

define dsPIC30ELF 1

define C30 1

define XC16 1

define dsPIC30 1

define __HAS_DSP__ 1

define __BIGGEST_ALIGNMENT__ 2

1 ""

1 "empty.c"

PIC30_COMPILER_PATH=/opt/microchip/xc16/v1.70/bin/bin/../ PIC30_LIBRARY_PATH=/opt/microchip/xc16/v1.70/bin/bin/../:/opt/microchip/xc16/v1.70/bin/bin/../../lib/:/opt/microchip/xc16/v1.70/bin/bin/../../lib/PIC24E/:/opt/microchip/xc16/v1.70/bin/bin/../../support/PIC24E/gld/:/opt/microchip/xc16/v1.70/bin/bin/../../lib/PIC24F/:/opt/microchip/xc16/v1.70/bin/bin/../../support/PIC24F/gld/:/opt/microchip/xc16/v1.70/bin/bin/../../lib/PIC24H/:/opt/microchip/xc16/v1.70/bin/bin/../../support/PIC24H/gld/:/opt/microchip/xc16/v1.70/bin/bin/../../lib/dsPIC30F/:/opt/microchip/xc16/v1.70/bin/bin/../../support/dsPIC30F/gld/:/opt/microchip/xc16/v1.70/bin/bin/../../support/dsPIC33C/gld/:/opt/microchip/xc16/v1.70/bin/bin/../../lib/dsPIC33E/:/opt/microchip/xc16/v1.70/bin/bin/../../support/dsPIC33E/gld/:/opt/microchip/xc16/v1.70/bin/bin/../../lib/dsPIC33F/:/opt/microchip/xc16/v1.70/bin/bin/../../support/dsPIC33F/gld/ COLLECT_GCC_OPTIONS='-v' '-E' '-dD' '-mlegacy-libc'



**Screenshots**

![Screenshot_20210517_202459](https://user-images.githubusercontent.com/34613827/118488083-f5416300-b74d-11eb-8e6e-2ed3919b4f50.png)
sean-mcmanus commented 3 years ago

With C_Cpp.loggingLevel set to "Debug" can you look in the "C/C++" logging for a failure message after "Compiler query command line: "? I don't see that in your existing logging.

ReimuNotMoe commented 3 years ago

With C_Cpp.loggingLevel set to "Debug" can you look in the "C/C++" logging for a failure message after "Compiler query command line: "? I don't see that in your existing logging.

The logs are extremely long, so I didn't include all of them.

Here they are:

Attempting to get defaults from C compiler in "compilerPath" property: '/opt/microchip/xc16/v1.70/bin/xc16-gcc'
Querying compiler for default C++ language standard using command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -x c++ -E -dM /dev/null
terminating child process: 55881
Querying compiler for default C language standard using command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -x c -E -dM /dev/null
terminating child process: 55885
Querying compiler's default target using command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -dumpmachine
Compiler returned default target value: pic30-elf

terminating child process: 55891
Unhandled default compiler target value detected: pic30-elf

Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=c99 -Wp,-v -E -dD -x c -m64  /dev/null
Compiler does not support 64-bit. Falling back to 32-bit intelliSenseMode.
terminating child process: 55895
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=c99 -Wp,-v -E -dD -x c -m32  /dev/null
Failed to query compiler. Falling back to no bitness.
terminating child process: 55901
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=c99 -Wp,-v -E -dD -x c   /dev/null
terminating child process: 55907
Shutting down IntelliSense server: /root/Devel/PICo24_SDK/main.c
  Folder: /usr/local/include/ will be indexed
  Folder: /usr/lib/llvm-7/lib/clang/7.0.1/include/ will be indexed
  Folder: /usr/include/ will be indexed
  Folder: /root/Devel/PICo24_SDK/ will be indexed
Attempting to get defaults from C++ compiler in "compilerPath" property: '/opt/microchip/xc16/v1.70/bin/xc16-gcc'
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=c++17 -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55913
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=c++1z -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55916
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=c++14 -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55919
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=c++1y -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55922
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=c++11 -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55925
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=c++0x -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55928
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=c++03 -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55931
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=c++98 -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55934
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=gnu++20 -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55937
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=gnu++2a -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55940
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=gnu++17 -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55943
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=gnu++1z -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55946
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=gnu++14 -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55949
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=gnu++1y -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55952
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=gnu++11 -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55955
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=gnu++0x -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55958
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=gnu++03 -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55961
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc" -std=gnu++98 -Wp,-v -E -dD -x c++ -m64  /dev/null
terminating child process: 55964
Compiler query command line: "/opt/microchip/xc16/v1.70/bin/xc16-gcc"  -Wp,-v -E -dD -x c++ -m64  /dev/null
Failed to query default include paths and defines for /opt/microchip/xc16/v1.70/bin/xc16-gcc.
terminating child process: 55967

Screenshot_20210518_140142

Colengms commented 3 years ago

Curious. It looks like the compiler query is insisting on adding -m64 and not falling back to -m32 or 'no bitness' for some reason, when querying as a C++ compiler. Querying as a C compiler works fine.

Does the XC16 compiler support only C, and not C++? At this link, I noticed the following: C++ only available in MPLAB XC32++ compilers

It would seem likely that this issue is lack of support for querying gcc-like C compilers that do not support C++. @ReimuNotMoe Could you confirm that the compiler you are using does not support C++?

ReimuNotMoe commented 3 years ago

Curious. It looks like the compiler query is insisting on adding -m64 and not falling back to -m32 or 'no bitness' for some reason, when querying as a C++ compiler. Querying as a C compiler works fine.

Does the XC16 compiler support only C, and not C++? At this link, I noticed the following: C++ only available in MPLAB XC32++ compilers

It would seem likely that this issue is lack of support for querying gcc-like C compilers that do not support C++. @ReimuNotMoe Could you confirm that the compiler you are using does not support C++?

Yes. Only C is officially supported by XC16, however there are unofficial community support for C++98 (by modifying the XC16 build script).

There are many other compilers that follows GCC's usages and only supports C, such as some 8051 MCU compilers.

I think you can simply check if CMAKE_CXX_COMPILER is set in CMakeLists.txt or if compilers.CXX is set for a particular kit defined in cmake-tools-kits.json.

Colengms commented 3 years ago

Addressing this would seem to require deciding how to handle C++ files if opened. Perhaps it should fall back to auto-detected defaults (a C++ compiler found on the system), though that would require tracking 2 active configurations where currently only 1 is tracked. Or, perhaps it should simply disable IntelliSense for C++ files, and/or display a warning.

sean-mcmanus commented 3 years ago

We could also potentially add cppCompilerPath/Args and cCompilerPath/Args settings (there are other scenarios were having 2 settings would be useful when using both C and C++ with compilerArgs that are only valid with one of the languages).

DanieleNardi commented 2 years ago

I had a similar issue, solved adding the following lines to the "compilerArgs" entry in c_cpp_properties.json:

-include path-to-device-header-file.h
-mdfp=path-to-device-pack