builtin.h does not compile with Arduino IDE g++ #43
Description
I am compiling psnip using the Arduino IDE for use on a Teensy, but it results in a compilation error when including psnip/builtin/builtin.h in a .cpp file. When I include it in a .c file it works fine, so that it suggests it has something to do specifically with C++.
In another issue I've read that you intend to support C++, but that it's just less well-tested.
In file included from C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\test.cpp:2:0:
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h: In function 'unsigned char psnip_intrin_BitScanForward64(long unsigned int*, uint64_t)':
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:636:63: error: '_' was not declared in this scope
# define psnip_builtin_ctz64(x) PSNIP_BUILTIN__VARIANT_INT64(_,ctz)(x)
^
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:1253:61: note: in expansion of macro 'psnip_builtin_ctz64'
return PSNIP_BUILTIN_UNLIKELY(Mask == 0) ? 0 : ((*Index = psnip_builtin_ctz64 (Mask)), 1);
^
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:636:65: error: 'ctz' was not declared in this scope
# define psnip_builtin_ctz64(x) PSNIP_BUILTIN__VARIANT_INT64(_,ctz)(x)
^
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:1253:61: note: in expansion of macro 'psnip_builtin_ctz64'
return PSNIP_BUILTIN_UNLIKELY(Mask == 0) ? 0 : ((*Index = psnip_builtin_ctz64 (Mask)), 1);
^
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:636:68: error: 'PSNIP_BUILTIN__VARIANT_INT64' was not declared in this scope
# define psnip_builtin_ctz64(x) PSNIP_BUILTIN__VARIANT_INT64(_,ctz)(x)
^
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:1253:61: note: in expansion of macro 'psnip_builtin_ctz64'
return PSNIP_BUILTIN_UNLIKELY(Mask == 0) ? 0 : ((*Index = psnip_builtin_ctz64 (Mask)), 1);
^
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h: In function 'unsigned char psnip_intrin_BitScanReverse64(long unsigned int*, uint64_t)':
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:481:63: error: '_' was not declared in this scope
# define psnip_builtin_clz64(x) PSNIP_BUILTIN__VARIANT_INT64(_,clz)(x)
^
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:1287:97: note: in expansion of macro 'psnip_builtin_clz64'
return (PSNIP_BUILTIN_UNLIKELY(Mask == 0)) ? 0 : ((*Index = ((sizeof(Mask) * CHAR_BIT) - 1) - psnip_builtin_clz64 (Mask)), 1);
^
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:481:65: error: 'clz' was not declared in this scope
# define psnip_builtin_clz64(x) PSNIP_BUILTIN__VARIANT_INT64(_,clz)(x)
^
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:1287:97: note: in expansion of macro 'psnip_builtin_clz64'
return (PSNIP_BUILTIN_UNLIKELY(Mask == 0)) ? 0 : ((*Index = ((sizeof(Mask) * CHAR_BIT) - 1) - psnip_builtin_clz64 (Mask)), 1);
^
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:481:68: error: 'PSNIP_BUILTIN__VARIANT_INT64' was not declared in this scope
# define psnip_builtin_clz64(x) PSNIP_BUILTIN__VARIANT_INT64(_,clz)(x)
^
C:\Users\ninjoh\AppData\Local\Temp\arduino_build_148318\sketch\psnip/builtin/builtin.h:1287:97: note: in expansion of macro 'psnip_builtin_clz64'
return (PSNIP_BUILTIN_UNLIKELY(Mask == 0)) ? 0 : ((*Index = ((sizeof(Mask) * CHAR_BIT) - 1) - psnip_builtin_clz64 (Mask)), 1);
sample code:
test.cpp
---
#include <stdint.h>
#include "psnip/builtin/builtin.h"
#include "psnip/endian/endian.h"
void test_do_nothing(void)
{
uint16_t be = psnip_endian_be16(200);
}
How g++ is actually called by the Arduino IDE (newlines added for clarity):
"C:\\Users\\ninjoh\\arduino-1.8.13\\hardware\\teensy/../tools/arm/bin/arm-none-eabi-g++"
-c
-O3
-flto
-fno-fat-lto-objects
-g
-Wall
-ffunction-sections
-fdata-sections
-nostdlib
-MMD
-fno-exceptions
-fpermissive
-felide-constructors
-std=gnu++14
-Wno-error=narrowing
-fno-rtti
-mthumb
-mcpu=cortex-m4
-fsingle-precision-constant
-D__MK20DX256__
-DTEENSYDUINO=153
-DARDUINO=10813
-DARDUINO_TEENSY32
-DF_CPU=24000000
-DUSB_SERIAL_HID
-DLAYOUT_US_ENGLISH
"-IC:\\Users\\ninjoh\\AppData\\Local\\Temp\\arduino_build_148318/pch"
"-IC:\\Users\\ninjoh\\arduino-1.8.13\\hardware\\teensy\\avr\\cores\\teensy3"
"-IC:\\Users\\ninjoh\\arduino-1.8.13\\portable\\sketchbook\\libraries\\MFRC522\\src"
"-IC:\\Users\\ninjoh\\arduino-1.8.13\\hardware\\teensy\\avr\\libraries\\SPI"
"-IC:\\Users\\ninjoh\\arduino-1.8.13\\portable\\sketchbook\\libraries\\Base64\\src"
"-IC:\\Users\\ninjoh\\arduino-1.8.13\\portable\\sketchbook\\libraries\\ArduinoBearSSL\\src"
"-IC:\\Users\\ninjoh\\arduino-1.8.13\\hardware\\teensy\\avr\\libraries\\EEPROM"
"-IC:\\Users\\ninjoh\\arduino-1.8.13\\portable\\sketchbook\\libraries\\EDB"
"-IC:\\Users\\ninjoh\\arduino-1.8.13\\hardware\\teensy\\avr\\libraries\\Wire"
"-IC:\\Users\\ninjoh\\arduino-1.8.13\\hardware\\teensy\\avr\\libraries\\SD"
"-IC:\\Users\\ninjoh\\arduino-1.8.13\\portable\\sketchbook\\libraries\\ArduinoJson\\src"
"C:\\Users\\ninjoh\\AppData\\Local\\Temp\\arduino_build_148318\\sketch\\test.cpp"
-o "C:\\Users\\ninjoh\\AppData\\Local\\Temp\\arduino_build_148318\\sketch\\test.cpp.o"