系统的ncurses环境有些问题

通过源码安装了ncurses6.3后，才可以在 llvmort-18.1.rc4中编译通过示例：

1，折腾环境

 ncurses-6.3$ ./configure
 ncurses-6.3$ make -j
 ncurses-6.3$ sudo make install
 
 
 sudo apt install libtinfo5
 sudo apt install libtinfo
 sudo apt-get install lib64tinfo6
 $ sudo apt-get install libtinfo-dev

2，编译llvmorg-18.1.rc4

Debug 版本，link 时容易爆掉内存，故make -j N 的 N 可以小一点，此处256GB内存，选了N==16，没有问题，32，34，36都不行。

cmake -G "Unix Makefiles" ../llvm      -DLLVM_ENABLE_PROJECTS="bolt;clang;clang-tools-extra;compiler-rt;cross-project-tests;libc;libclc;lld;lldb;mlir;openmp;polly;pstl;flang"      -DLLVM_BUILD_EXAMPLES=ON           -DLLVM_TARGETS_TO_BUILD="host"      -DCMAKE_BUILD_TYPE=Debug           -DLLVM_ENABLE_ASSERTIONS=ON           -DLLVM_ENABLE_RUNTIMES=all             -DLLVM_BUILD_LLVM_DYLIB=ON              -DCMAKE_INSTALL_PREFIX=../../local_whole

make -j 16
16物理核，不用超线程 

make install

3，示例

cat set_env.sourceme
 

export PATH=/home/hipper/llvm_3_4_0_ex/browse_llvm_17/local/bin:$PATH
export LD_LIBRARY_PATH=/home/hipper/llvm_3_4_0_ex/browse_llvm_17/local/lib:$LD_LIBRARY_PATH

Makefile

LLVM_CONFIG ?= llvm-config
#CXX := clang++
ifndef VERBOSE
QUIET :=@
endif

SRC_DIR ?= $(PWD)
LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags) 
COMMON_FLAGS = -Wall -Wextra
CXXFLAGS += $(COMMON_FLAGS) $(shell $(LLVM_CONFIG) --cxxflags)
LCXX :=$(shell $(LLVM_CONFIG) --cxxflags)
CPPFLAGS += $(shell $(LLVM_CONFIG) --cppflags) -I$(SRC_DIR)

CLANGLIBS = \
  -Wl,--start-group \
  -lclang \
  -lclangFrontend \
  -lclangDriver \
  -lclangSerialization \
  -lclangParse \
  -lclangSema \
  -lclangAnalysis \
  -lclangEdit \
  -lclangAST \
  -lclangLex \
  -lclangBasic \
  -Wl,--end-group

LLVMLIBS = $(shell $(LLVM_CONFIG) --libs)

PROJECT = hello_diagnostic
PROJECT_OBJECTS = hello_diagnostic.o

default: $(PROJECT)

%.o : $(SRC_DIR)/%.cpp
	@echo Compiling $*.cpp
	$(QUIET)$(CXX) -c $(CPFLAGS) $(CXXFLAGS) $<

$(PROJECT) : $(PROJECT_OBJECTS) 
	@echo Linking $@
	$(QUIET)$(CXX) -o $@ $(LDFLAGS) $^ $(CLANGLIBS) $(LLVMLIBS) -lncurses

.PHONY: clean
clean:
	$(QUIET)rm -f $(PROJECT) $(PROJECT_OBJECTS)


.PHONY: echo
echo:
	@echo "CXX 	is	$(CXX)"
	@echo "LDFLAGS 	is	$(LDFLAGS)}"
	@echo "CXXFLAGS	is	$(CXXFLAGS)"
	@echo "CPPFLAGS	is	$(CPPFLAGS)"
	@echo "SRC_DIR	is	$(SRC_DIR)"

hello_diagnostic.cpp

extern "C"{
#include "clang-c/Index.h"
}

#include "llvm/Support/CommandLine.h"
#include <iostream>

using namespace llvm;

static cl::opt<std::string> FileName(cl::Positional, cl::desc("Input file"), cl::Required);

int main(int argc, char** argv)
{
    cl::ParseCommandLineOptions(argc, argv, "Diagnostics Example");
    CXIndex index = clang_createIndex(0, 0);
    const char* args[]={
        "-I/usr/include",
        "-I."
    };
    CXTranslationUnit translationUnit = 
    clang_parseTranslationUnit(
            index, FileName.c_str(), args, 2, NULL, 0, 
            CXTranslationUnit_None);
    unsigned diagnosticCount = clang_getNumDiagnostics(translationUnit);
    for(unsigned i=0; i<diagnosticCount; ++i)
    {
        CXDiagnostic diagnostic = clang_getDiagnostic(translationUnit, i);
        CXString category = clang_getDiagnosticCategoryText(diagnostic);
        CXString message = clang_getDiagnosticSpelling(diagnostic);
        unsigned severity = clang_getDiagnosticSeverity(diagnostic);
        CXSourceLocation loc = clang_getDiagnosticLocation(diagnostic);
        CXString fName;
        unsigned line = 0, col = 0;
        clang_getPresumedLocation(loc, &fName, &line, &col);
        std::cout << ""<<severity<<" File: "
                  << clang_getCString(fName) << " Line: "
                  << line << " Col: " << col << " Category: \" "
                  << clang_getCString(category) << "\" Message: "
                  << clang_getCString(message) << std::endl;
        clang_disposeString(fName);
        clang_disposeString(message);
        clang_disposeString(category);
        clang_disposeDiagnostic(diagnostic);       
    }
    clang_disposeTranslationUnit(translationUnit);
    clang_disposeIndex(index);
    
    return 0;
}
hip

被诊断的带有错误的源码：

hello.c

int main(){

	printf("hello, world!\n")
		
}

这里有两个错误，

1，没有#include <stdio.h> 故，没有声明 printf；

2，printf() 后面没有分号，违反了c语言的语法；

下图中被诊断了出来：

示例效果：

4, llvm 3.4.0 示例

同样的代码，在llvmorg-3.4.0 环境下测试也通过了：

cat set_env.sourceme

export PATH=/home/hipper/llvm_3_4_0_ex/browse/local/bin:$PATH
export LD_LIBRARY_PATH=/home/hipper/llvm_3_4_0_ex/browse/local/lib:$LD_LIBRARY_PATH