I could not include (could not compile to be exact) fmt/format with GCC-12.
file 1: format
#pragma once
#define FMT_HEADER_ONLY
#include "fmt/format.h"
namespace std
{
using fmt::format;
using fmt::format_error;
using fmt::formatter;
}
file 2: helloworld.cpp
// helloworld.cpp
import <iostream>;
#include "format"
int main()
{
std::cout << std::format("There are {} ways I love you.", 219) << std::endl;
return 0;
}
Commands:
g++-12 -std=c++2a -fmodules-ts -xc++-system-header iostream
g++-12 -std=c++2a -fmodules-ts helloworld.cpp
Error message:
fmt/format.h:1010:54: internal compiler error: in cxx_eval_call_expression, at cp/constexpr.cc:2835
1010 | return {result.grouping, Char(result.thousands_sep)};
| ^
OS - WSL2/Ubuntu 22.04 LTS
fmt - fmt-8.1.1
Any help is appreciated. Thank you.
Related
I'm on ubuntu with clang-14/gcc-12 and I have 2 cpp files: MyFun.cpp
export module cppcon;
namespace ns_CppCon {
auto GetWelcomeHelper() { return "Welcome to CppCon 2019!"; }
export auto GetWelcome() { return GetWelcomeHelper();}
}
And UseFun.cpp
// main.cpp
#include<iostream>
import cppcon;
int main(){
std::cout << CppCon::GetWelcome();
return 0;
}
Then under command line:
$ clang++ MyFun.cpp UseFun.cpp -std=c++20 && ./a.out
UseFun.cpp:3:8: fatal error: module 'cppcon' not found
import cppcon;
~~~~~~~^~~~~~
1 error generated.
When did I get wrong, how to solve it?
Context
I have been working with C++ for about the past 5-6 months and I'm beginning to learn gRPC. I have followed many tutorials online to get started, but I want to build a client-server communication app from scratch. Probably a bit too much, but I'm doing my best to understand how to get it all to work from the ground up rather than downloading, typing 'make', and then having a working product that I don't know how to implement into my own projects.
Goal: Create and run a simple C++ gRPC client-server communication
Versions
Using VSCode IDE.
Protoc = libprotoc 3.17.3
gRPC = 1.41.1
make = 3.81
Files
mathtest.proto
syntax = "proto3";
option java_package = "ex.grpc";
package mathtest;
// Defines the service
service MathTest {
// Function invoked to send the request
rpc sendRequest (MathRequest) returns (MathReply) {}
}
// The request message containing requested numbers
message MathRequest {
int32 a = 1;
int32 b = 2;
}
// The response message containing response
message MathReply {
int32 result = 1;
}
server.cpp
#include <string>
#include <grpcpp/grpcpp.h>
#include "mathtest.grpc.pb.h"
using grpc::Server;
using grpc::ServerBuilder;
using grpc::ServerContext;
using grpc::Status;
using mathtest::MathTest;
using mathtest::MathRequest;
using mathtest::MathReply;
class MathServiceImplementation final : public MathTest::Service {
Status sendRequest(
ServerContext* context,
const MathRequest* request,
MathReply* reply
) override {
int a = request->a();
int b = request->b();
reply->set_result(a * b);
return Status::OK;
}
};
void Run() {
std::string address("0.0.0.0:5000");
MathServiceImplementation service;
ServerBuilder builder;
builder.AddListeningPort(address, grpc::InsecureServerCredentials());
builder.RegisterService(&service);
std::unique_ptr<Server> server(builder.BuildAndStart());
std::cout << "Server listening on port: " << address << std::endl;
server->Wait();
}
int main(int argc, char** argv) {
Run();
return 0;
}
client.cpp
#include <string>
#include <grpcpp/grpcpp.h>
#include "mathtest.grpc.pb.h"
using grpc::Channel;
using grpc::ClientContext;
using grpc::Status;
using mathtest::MathTest;
using mathtest::MathRequest;
using mathtest::MathReply;
class MathTestClient {
public:
MathTestClient(std::shared_ptr<Channel> channel) : stub_(MathTest::NewStub(channel)) {}
int sendRequest(int a, int b) {
MathRequest request;
request.set_a(a);
request.set_b(b);
MathReply reply;
ClientContext context;
Status status = stub_->sendRequest(&context, request, &reply);
if(status.ok()){
return reply.result();
} else {
std::cout << status.error_code() << ": " << status.error_message() << std::endl;
return -1;
}
}
private:
std::unique_ptr<MathTest::Stub> stub_;
};
void Run() {
std::string address("0.0.0.0:5000");
MathTestClient client(
grpc::CreateChannel(
address,
grpc::InsecureChannelCredentials()
)
);
int response;
int a = 5;
int b = 10;
response = client.sendRequest(a, b);
std::cout << "Answer received: " << a << " * " << b << " = " << response << std::endl;
}
int main(int argc, char* argv[]){
Run();
return 0;
}
Steps taken for compilation
Use mathtest.proto to create the necessary files via 'protoc' (or protobuf) by executing these: protoc --grpc_out=. --plugin=protoc-gen-grpc=/opt/homebrew/bin/grpc_cpp_plugin mathtest.proto & protoc --cpp_out=. mathtest.proto
This creates the following files:
mathtest.pb.h
mathtest.pb.cc
mathtest.grpc.pb.h
mathtest.grpc.pb.cc
Compile client.cpp & server.cpp files to create executable binaries using these commands: g++ -std=c++17 client.cpp mathtest.pb.cc mathtest.grpc.pb.cc -o client 'pkg-config --libs protobuf grpc++' (NOTE: in this post, I use a single quote in the command line, but in the actual command I use a backtick; just wanted to make that clear)
Errors
As you may notice, I can't get to compiling the server because I can't get past the client compilation first. After executing the above command in step 2 of compilation, this is my output:
g++ -std=c++17 client.cpp mathtest.pb.cc mathtest.grpc.pb.cc -o client `pkg-config --libs protobuf grpc++`
client.cpp:4:10: fatal error: 'grpcpp/grpcpp.h' file not found
#include <grpcpp/grpcpp.h>
^~~~~~~~~~~~~~~~~
1 error generated.
In file included from mathtest.pb.cc:4:
./mathtest.pb.h:10:10: fatal error: 'google/protobuf/port_def.inc' file not found
#include <google/protobuf/port_def.inc>
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
In file included from mathtest.grpc.pb.cc:5:
./mathtest.pb.h:10:10: fatal error: 'google/protobuf/port_def.inc' file not found
#include <google/protobuf/port_def.inc>
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make: *** [client] Error 1
Here's my real confusion...
C++ intellisense has no issues finding these files. My $PATH variables point to these folders, and my VS Code include path also point to these folders. I'm unsure where I am going wrong here...
echo $PATH returns this:
/opt/homebrew/bin:/opt/homebrew/sbin:/opt/homebrew/include:/opt/homebrew/Cellar:/opt/homebrew/opt/libtool/libexec/gnubin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/tzeller/.local/bin
The folders in question ('google' & 'grcpp') live within /opt/homebrew/include and they hold the necessary files as well...
What am I missing??
Change your compile command to
g++ -std=c++17 client.cpp mathtest.pb.cc mathtest.grpc.pb.cc -o client `pkg-config --libs --cflags protobuf grpc++`
The --cflags bit asks pkg-config to spit out the necessary parameters for setting the header search path (on my system -I/opt/homebrew/Cellar/grpc/1.41.1/include and others)
I installed LLVM on a clear Windows 10 machine, without anything else. I installed the ARMCompiler6.14.1. I have a simple cpp for testing:
#include <stdio.h>
#include <iostream>
#include <vector>
int main(void) {
int counter = 0;
counter++;
printf("counter: %d", counter);
std::cout << std::endl;
printf("c++14 output");
std::cout << std::endl;
std::vector<int> vect{1, 2, 3, 4, 5};
for (auto & el : vect)
std::cout << "-" << el << std::endl;
return counter;
}
When I compile this with following line I get errors:
"C:\Program Files\LLVM\bin\clang++.exe" -MD -x c++ "C:\Test\test.cpp" -target armv7a-none-eabi "-IC:\Program Files\ARMCompiler.6.14.1\include"
The error is:
test.cpp 2:10:fatal error: 'iostream' file not found
When I compile this with following line I get an windows executable which runs:
"C:\Program Files\LLVM\bin\clang++.exe" -MD -x c++ "C:\Test\test.cpp"
Since I checked that in the LLVM\bin is anything from the developer.arm.com package (ARMcompiler 6.14.1), I think that I should get an a.out for ARM, but I do not. When I checked the generated object file with:
"C:\Program Files\LLVM\bin\llvm-objdump.exe" -f test.o
I get following:
test.o file format elf32-littlearm
arhitecture: arm
start adress: 0x00000000
which means the object file is correctly generated for ARM, but I did not get an executable a.out for ARM.
What am I missing? How should I compile a simple test program to get it cross-compiled for ARM? Should I get the binutil from GCC for the Clang to create ARM executables?
I have a simple C++ program which I compile with clang using the Boost library and with C++14 support.
I use the following command to compile my sample.cpp file and it works fine:
clang++ -g -std=c++1y -I$BOOST_ROOT sample.cpp -o sample
where $BOOST_ROOT is the path to where I downloaded and extracted the boost zip file.
$BOOST_ROOT=/usr/local/boost_1_66_0/
When I try to compile the same sample.cpp file with a makefile, it doesn't work.
This is what my makefile looks like:
sample: sample.cpp
clang++ -g -std=c++1y -I$BOOST_ROOT sample.cpp -o sample
Running make command, I get the error:
Sample.cpp:9:10: fatal error: 'boost/format.hpp' file not found
#include <boost/format.hpp>
^~~~~~~~~~~~~~~~~~
1 error generated.
And here is the sample.cpp
//
// sample.cpp
//
//
#include <iostream>
#include <boost/format.hpp>
using namespace std;
int main()
{
std::cout << "Enter your first name: " << std::endl;
std::string firstName;
std::cin >> firstName;
std::cout << "Enter your surname: " << std::endl;
std::string surname;
std::cin >> surname;
auto formattedName = str( boost::format("%1% %2%"s) % firstName % surname );
std::cout << "You said your name is: " << formattedName << std::endl;
return 0;
}
CONSOLE OUTPUT
MacBook-Air:Listing_1_7 userd43f$ make
c++ sample.cpp -o sample
sample.cpp:9:10: fatal error: 'boost/format.hpp' file not found
#include <boost/format.hpp>
^~~~~~~~~~~~~~~~~~
1 error generated.
make: *** [sample] Error 1
MacBook-Air:Listing_1_7 userd43f$ ls $BOOST_ROOT
INSTALL boost boost.png bootstrap.sh index.html rst.css
Jamroot boost-build.jam boostcpp.jam doc libs status
LICENSE_1_0.txt boost.css bootstrap.bat index.htm more tools
The problem was that there were spaces instead of a tab in the command-line of my makefile.
BOOST_ROOT := /usr/local/boost_1_66_0
BOOST_INC := ${BOOST_ROOT}/include
sample: sample.cpp
clang++ -g -std=c++1y -I$(BOOST_ROOT) sample.cpp -o sample
In the last line just before clang++ command I was using spaces instead of a TAB. I replaced all the spaces with a single TAB before clang++, and also I needed to put the BOOST_ROOT inside the parentheses as (mentioned by #MaximEgorushkin)
Then it started picking up the right command, as shown in the output below:
MacBook-Air:Listing_1_7 userd43f$ make
clang++ -g -std=c++1y -I/usr/local/boost_1_66_0 sample.cpp -o sample
Boost root directory normally has include and lib directories in it.
It should probably be:
BOOST_ROOT := /usr/local/boost_1_66_0
BOOST_INC := ${BOOST_ROOT}/include
sample: sample.cpp
clang++ -g -std=c++1y -I${BOOST_INC} sample.cpp -o sample
So I installed wiringPi onto my Raspberry Pi, I used the "./build" to make and install. I then didn't have the .h files in any of the include directories ("/usr/local/include" as an example) so I copied all of them into both "/usr/include" and into "/usr/local/include".
So I have been compiling for the Raspberry Pi already but when trying to do it with wiringPi I just get the Make *** [] Error 1.
After following what others instructed I ammended the command Eclipse uses
Cross G++ Compiler (Miscellanious):
-c -fmessage-length=0 -pthread -std=c++11 -Wl,--no-as-needed -lwiringPi -lwiringPiDev
Cross G++ Linker (Miscellanious):
-pthread -std=c++11 -Wl,--no-as-needed -lwiringPi -lwiringPiDev
In my "Include Paths (-l)" I have "/home/gummielovingmudkip/.local/share/raspberrypi/rootfs/usr/local/include"
Here is my main.cpp file
#include <iostream>
#include <fstream>
#include <ctime>
#include <stdlib.h>
extern "C" {
#include <wiringPi.h>
}
#include "Logging.hpp"
int main() {
// Loading all necessary classes
Logging log;
// Beginning
log.setup("susie");
log.print(1, "main() has started");
log.print(1, "All classes have been loaded");
// Setting up wiringPi
wiringPiSetup () ;
// Setting pin modes
pinMode (0, OUTPUT) ;
for (;;) {
digitalWrite (0, HIGH) ; delay (500) ;
digitalWrite (0, LOW) ; delay (500) ;
}
return 0;
}
The above code gives no errors, I just get the compiler error.
I thank you all in advance.
Edit:
Sorry for not including the error message!
make: *** [Logging.o] Error 1