ESP-IDF & Arduino-ESP32 & WebServer: fatal error: http_parser.h: No such file or directory

[andreaskuster]

Hardware:

Board:	ESP32 Dev Module
ESP-IDF Version:	master@1d7068e4b (matching commit of last sync between arduino-esp32 and esp-idf)
Arduino-ESP32 Version:	master
IDE name:	IDF component
Flash Frequency:	40Mhz
PSRAM enabled:	no
Upload Speed:	115200
Computer OS:	Ubuntu

Description:

Compilation fails with the error below, after including the web server stack (i.e. WiFi.h, WebServer.h)
`

Sketch

#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
#include <ESPmDNS.h>

const char* ssid = "........";
const char* password = "........";

WebServer server(80);

void setup(void) {

  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  if (MDNS.begin("esp32")) {
    Serial.println("MDNS responder started");
  }

  server.begin();
}

void loop(void) {
  server.handleClient();
  delay(2);
}

Debug Messages:

...
[ 86%] Building C object esp-idf/spiffs/CMakeFiles/__idf_spiffs.dir/spiffs/src/spiffs_check.c.obj
[ 86%] Building C object esp-idf/spiffs/CMakeFiles/__idf_spiffs.dir/spiffs/src/spiffs_gc.c.obj
[ 86%] Building C object esp-idf/spiffs/CMakeFiles/__idf_spiffs.dir/spiffs/src/spiffs_hydrogen.c.obj
[ 86%] Building C object esp-idf/spiffs/CMakeFiles/__idf_spiffs.dir/spiffs/src/spiffs_nucleus.c.obj
[ 86%] Linking C static library libspiffs.a
[ 86%] Built target __idf_spiffs
Scanning dependencies of target __idf_WIFIMANAGER-ESP32
[ 86%] Building CXX object esp-idf/WIFIMANAGER-ESP32/CMakeFiles/__idf_WIFIMANAGER-ESP32.dir/WiFiManager.cpp.obj
In file included from /home/andreas/CLionProjects/ESP32-WebCam/components/arduino/libraries/WebServer/src/WebServer.h:30,
                 from /home/andreas/CLionProjects/ESP32-WebCam/components/WIFIMANAGER-ESP32/WiFiManager.h:21,
                 from /home/andreas/CLionProjects/ESP32-WebCam/components/WIFIMANAGER-ESP32/WiFiManager.cpp:13:
/home/andreas/CLionProjects/ESP32-WebCam/components/arduino/libraries/WebServer/src/HTTP_Method.h:4:10: fatal error: http_parser.h: No such file or directory
 #include "http_parser.h"
          ^~~~~~~~~~~~~~~
compilation terminated.
make[3]: *** [esp-idf/WIFIMANAGER-ESP32/CMakeFiles/__idf_WIFIMANAGER-ESP32.dir/build.make:82: esp-idf/WIFIMANAGER-ESP32/CMakeFiles/__idf_WIFIMANAGER-ESP32.dir/WiFiManager.cpp.obj] Error 1
make[2]: *** [CMakeFiles/Makefile2:5144: esp-idf/WIFIMANAGER-ESP32/CMakeFiles/__idf_WIFIMANAGER-ESP32.dir/all] Error 2
make[1]: *** [CMakeFiles/Makefile2:2465: CMakeFiles/esp32-webcam.elf.dir/rule] Error 2
make: *** [Makefile:365: esp32-webcam.elf] Error 2

Solution

The webserver seems to depend on the the nghttp library ( http_parser.h ). Adding this requirement to CMakeLists.txt solves the problem. I will open a PR