CODEWITHSUNDEEP
c++linuxqt
Thanatos
Thanatos

Reputation: 41

Unable to compile code using cmath

I am attempting to use GLM to work with Vulkan/SDL. I have both of those working correctly, however when I select build, it says that 

/usr/include/c++/7.1.1/cmath:45: error: math.h: No such file or directory
 #include_next <math.h>
               ^~~~~~~~

However if I were to go into my project and just include it normally, it works fine. I tried using G++ instead of GCC. I'm on Linux(arch) and using QT Creator QT version 5.9.1 . I'm using Qmake, but no Qt libraries. The GLM code im using is

glm::mat4 matrix;
glm::vec4 vec;
auto test = matrix * vec;

and these are the includes

#include <vulkan/vulkan.h>
#include <SDL2/SDL.h>
#include <glm/vec4.hpp>
#include <glm/mat4x4.hpp>
#include <iostream>

the compiler command line is:

g++ -c -pipe -std=c++11 -g -std=gnu++11 -Wall -W -fPIC -DQT_QML_DEBUG -I../SDLProject -I. -isystem /usr/local/include -I../VulkanSDK/1.0.54.0/x86_64/include -isystem /usr/include -I/usr/lib/qt/mkspecs/linux-g++ -o main.o ../SDLProject/main.cpp

Upvotes: 0

Views: 1933

Answers (1)

Thanatos
Thanatos

Reputation: 41

I solved my own question. I realized that I had set an 

INCLUDE_PATH+= /usr/include

That mistake is what caused #include_next to be unable to find the next include. After removing that from my .pro file, it compiled without a hiccup.

Upvotes: 1

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