curl/curl.h: No such file or directory even tho vcpkg created directory vcpg_installed in build and there is curl/curl.h there

Question

So I'm trying to use curl.h in c++ my main.cpp is just hello world but with include curl/curl.h:

#include <iostream>
#include <curl/curl.h>

int main(){
    std::cout<<"hello world!";

    return 0;
}

my CMakeLists.txt looks like this:

add_executable(main)
target_sources(main PRIVATE main.cpp)
cmake_minimum_required(VERSION 3.15)
set(CMAKE_TOOLCHAIN_FILE ${CMAKE_CURRENT_SOURCE_DIR}/vcpkg/scripts/buildsystems/vcpkg.cmake CACHE STRING "Vcpkg toolchain file")
project(web_crawler)
find_package(libcurl-simple-https CONFIG REQUIRED)

I am new to both vcpkg and CMake and I am trying to learn it thats why it looks like this.

and my vcpkg.json is:

{
  "name": "webcrawler",
  "version-string": "latest",
  "dependencies": [
    "libcurl-simple-https"
  ]
}

cmake build seems to work fine and when i use make I'm getting this:

fatal error: curl/curl.h: No such file or directory
    2 | #include <curl/curl.h>
      |          ^~~~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/main.dir/build.make:76: CMakeFiles/main.dir/main.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/main.dir/all] Error 2
make: *** [Makefile:91: all] Error 2

As I already told I am new to both cmake and vcpkg so I have no idea what to do and couldn't find any similar post as most of them are about installing curl.

Answer 1

Wild guess here, but after this line:

find_package(libcurl-simple-https CONFIG REQUIRED)

Did you not forget to add the include directory for it? So the next line should be something like:

include_directories(${libcurl-simple-https_dirs})

What I've done in other projects is:

FIND_PACKAGE(CURL)
INCLUDE_DIRECTORIES(${CURL_INCLUDE_DIR})

You'll have to check the spelling and possibly the case since I'm not familiar with the name you used, "libcurl-simple-https".