Error during high-level synthesis - Error during high-level synthesis I want to use intelhlscompiler for high-level synthesis of C++ files, but I get the following error. intelhlscompiler Quatusprimelite17.1 visualstudio2010 The procedure is start_intelhls.bat → build.bat → test-x86-64.exe → build test-fpga →Error as shown in the image above. The cpp file I want to use for high level synthesis ↓ ------------------------------------------------------------------------------------------------------------ #include "HLS/hls.h" #include <stdio.h> int main(void) { FILE * fp=NULL; int seisuu=0; // 数字1 int seisuu2=0; // 数字2 int ans=0; fp = fopen("input.txt", "r"); if(fp == NULL) { printf("ファイルを開くことが出来ませんでした．¥n"); } while (fscanf(fp, "%d,%d", &seisuu,&seisuu2) != EOF) { printf("%d %d\n", seisuu,seisuu2); } ans = seisuu+seisuu2; fp = fopen("output.txt", "w"); fprintf(fp,"%d",ans); fclose(fp); return 0; } ------------------------------------------------------------------------------------------------------------- buid.bat ↓ ------------------------------------------------------------------------------------------------------------- @Echo off set "SOURCE_FILES=fileinout.cpp" set "HLS_CXX_FLAGS=" :: This batch file will compile the example design to three standard targets: :: 1) test-msvc Compile the example design to the CPU :: Uses Visual Studio 2010 :: 2) test-x86-64 Compile the example design to the CPU :: Uses the Intel HLS Compiler :: 3) test-fpga Synthesize the example design to HDL :: Generates a cosimulation executable to simulate the HDL :: Uses the Intel HLS Compiler :: 4) clean Remove any temporary files generated by the compiler :: Usage: build.bat <target> :: Example: build.bat test-x86-64 :: Only one argument expected if not "%2"=="" goto usage :: Accept the user's target, else default to x86-64 if not "%1"=="" ( set "TARGET=%1" ) else ( set "TARGET=test-x86-64" echo No target specified, defaulting to %TARGET% echo Available targets: test-x86-64, test-fpga, test-msvc, clean ) :: Any tools installed with HLS can be found relative to the location of i++ for %%I in (i++.exe) do ( set "HLS_INSTALL_DIR=%%~dp$PATH:I" ) set "HLS_INSTALL_DIR=%HLS_INSTALL_DIR%.." :: Set up the compile variables if "%TARGET%" == "test-x86-64" ( set "CXX=i++" set "CXXFLAGS=%HLS_CXX_FLAGS% -march=x86-64" set "LFLAGS=-o %TARGET%.exe" ) else if "%TARGET%" == "test-fpga" ( set "CXX=i++" set "CXXFLAGS=%HLS_CXX_FLAGS% -march=CycloneV -ghdl set "LFLAGS=-o %TARGET%.exe" ) else if "%TARGET%" == "test-msvc" ( set "CXX=cl" set "CXXFLAGS=/I ""%HLS_INSTALL_DIR%\include"" /nologo /EHsc /wd4068 /DWIN32 /MD" set "LFLAGS=/link ""/libpath:%HLS_INSTALL_DIR%\host\windows64\lib"" hls_emul.lib /out:%TARGET%.exe" ) else if "%TARGET%" == "clean" ( del /S /F /Q test-msvc.exe test-fpga.exe test-fpga.prj test-x86-64.exe > NUL rmdir /S /Q test-fpga.prj > NUL goto:eof ) else ( goto usage ) :: Replace "" with " in the flags set "CXXFLAGS=%CXXFLAGS:""="%" set "LFLAGS=%LFLAGS:""="%" :: Kick off the compile echo %CXX% %CXXFLAGS% %SOURCE_FILES% %LFLAGS% %CXX% %CXXFLAGS% %SOURCE_FILES% %LFLAGS% if not ERRORLEVEL 0 ( echo Error: Compile failed exit /b 1 ) echo Run %TARGET%.exe to execute the test. :: We're done! goto:eof :: Dump the usage if we get unexpected input :usage echo Usage: build.bat [target] echo Targets: test-msvc, test-x86-64, test-fpga, clean echo Example: build.bat test-x86-64 exit /b 2 ------------------------------------------------------------------------------------------------------------- Replies: Re: Error during high-level synthesis Hi, Yes, you need to identify the function in your application, you may also read Table 3: https://www.intel.com/content/www/us/en/programmable/documentation/apo1572388959915.html#hwe1572907388410 Replies: Re: Error during high-level synthesis You need to mark the part of your code that as going to run on the FPGA as a "component". You should carefully study the following document, specially sections 2 and 3: https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/hls/ug-hls.pdf