both compile_test and ltr_329als_simple won't compile

[societyofrobots]

board: ESP32 Wrover Module
ESP32 2.0.9
Arduino IDE 2.1.0

Ran and compiled both examples without change.

Got below errors for ltr_329als_simple, and about half these errors for compile_test:

In file included from c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als.h:26,
                 from C:\Users\palmi\AppData\Local\Temp\.arduinoIDE-unsaved202361-15128-cx8egz.w2q3\ltr_329als_simple\ltr_329als_simple.ino:16:
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h: In member function 'constexpr Mcci_Ltr_329als_Regs::AlsContr_t& Mcci_Ltr_329als_Regs::AlsContr_t::setValue(uint8_t, uint8_t) const':
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:247:65: error: assignment of member 'Mcci_Ltr_329als_Regs::AlsContr_t::m_value' in read-only object
             this->m_value = fieldset(fmask, this->m_value, value);
                                                                 ^
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:248:20: error: binding reference of type 'Mcci_Ltr_329als_Regs::AlsContr_t&' to 'const Mcci_Ltr_329als_Regs::AlsContr_t' discards qualifiers
             return *this;
                    ^~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:249:13: error: body of 'constexpr' function 'constexpr Mcci_Ltr_329als_Regs::AlsContr_t& Mcci_Ltr_329als_Regs::AlsContr_t::setValue(uint8_t, uint8_t) const' not a return-statement
             }
             ^
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h: In member function 'constexpr Mcci_Ltr_329als_Regs::AlsMeasRate_t& Mcci_Ltr_329als_Regs::AlsMeasRate_t::setValue(uint8_t, uint8_t) const':
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:348:65: error: assignment of member 'Mcci_Ltr_329als_Regs::AlsMeasRate_t::m_value' in read-only object
             this->m_value = fieldset(fmask, this->m_value, value);
                                                                 ^
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:349:20: error: binding reference of type 'Mcci_Ltr_329als_Regs::AlsMeasRate_t&' to 'const Mcci_Ltr_329als_Regs::AlsMeasRate_t' discards qualifiers
             return *this;
                    ^~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:350:13: error: body of 'constexpr' function 'constexpr Mcci_Ltr_329als_Regs::AlsMeasRate_t& Mcci_Ltr_329als_Regs::AlsMeasRate_t::setValue(uint8_t, uint8_t) const' not a return-statement
             }
             ^
In file included from c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als.h:26,
                 from C:\Users\palmi\AppData\Local\Temp\.arduinoIDE-unsaved202361-15128-cx8egz.w2q3\ltr_329als_simple\ltr_329als_simple.ino:16:
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h: In member function 'constexpr Mcci_Ltr_329als_Regs::PartID_t& Mcci_Ltr_329als_Regs::PartID_t::setValue(uint8_t, uint8_t) const':
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:481:65: error: assignment of member 'Mcci_Ltr_329als_Regs::PartID_t::m_value' in read-only object
             this->m_value = fieldset(fmask, this->m_value, value);
                                                                 ^
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:482:20: error: binding reference of type 'Mcci_Ltr_329als_Regs::PartID_t&' to 'const Mcci_Ltr_329als_Regs::PartID_t' discards qualifiers
             return *this;
                    ^~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:483:13: error: body of 'constexpr' function 'constexpr Mcci_Ltr_329als_Regs::PartID_t& Mcci_Ltr_329als_Regs::PartID_t::setValue(uint8_t, uint8_t) const' not a return-statement
             }
             ^
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h: In member function 'constexpr Mcci_Ltr_329als_Regs::ManufacID_t& Mcci_Ltr_329als_Regs::ManufacID_t::setValue(uint8_t, uint8_t) const':
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:525:65: error: assignment of member 'Mcci_Ltr_329als_Regs::ManufacID_t::m_value' in read-only object
             this->m_value = fieldset(fmask, this->m_value, value);
                                                                 ^
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:526:20: error: binding reference of type 'Mcci_Ltr_329als_Regs::ManufacID_t&' to 'const Mcci_Ltr_329als_Regs::ManufacID_t' discards qualifiers
             return *this;
                    ^~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:527:13: error: body of 'constexpr' function 'constexpr Mcci_Ltr_329als_Regs::ManufacID_t& Mcci_Ltr_329als_Regs::ManufacID_t::setValue(uint8_t, uint8_t) const' not a return-statement
             }
             ^
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h: In member function 'constexpr Mcci_Ltr_329als_Regs::AlsStatus_t& Mcci_Ltr_329als_Regs::AlsStatus_t::setValue(uint8_t, uint8_t) const':
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:570:65: error: assignment of member 'Mcci_Ltr_329als_Regs::AlsStatus_t::m_value' in read-only object
             this->m_value = fieldset(fmask, this->m_value, value);
                                                                 ^
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:571:20: error: binding reference of type 'Mcci_Ltr_329als_Regs::AlsStatus_t&' to 'const Mcci_Ltr_329als_Regs::AlsStatus_t' discards qualifiers
             return *this;
                    ^~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:572:13: error: body of 'constexpr' function 'constexpr Mcci_Ltr_329als_Regs::AlsStatus_t& Mcci_Ltr_329als_Regs::AlsStatus_t::setValue(uint8_t, uint8_t) const' not a return-statement
             }
             ^
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h: In member function 'constexpr Mcci_Ltr_329als_Regs::AlsStatus_t& Mcci_Ltr_329als_Regs::AlsStatus_t::setNew(bool) const':
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:608:20: error: binding reference of type 'Mcci_Ltr_329als_Regs::AlsStatus_t&' to 'const Mcci_Ltr_329als_Regs::AlsStatus_t' discards qualifiers
             return *this;
                    ^~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:609:13: error: body of 'constexpr' function 'constexpr Mcci_Ltr_329als_Regs::AlsStatus_t& Mcci_Ltr_329als_Regs::AlsStatus_t::setNew(bool) const' not a return-statement
             }
             ^
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h: In static member function 'static constexpr float Mcci_Ltr_329als_Regs::DataRegs_t::luxComputation(uint16_t, uint16_t, uint32_t, uint32_t)':
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:745:13: error: body of 'constexpr' function 'static constexpr float Mcci_Ltr_329als_Regs::DataRegs_t::luxComputation(uint16_t, uint16_t, uint32_t, uint32_t)' not a return-statement
             }
             ^
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h: At global scope:
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:805:60: error: non-constant condition for static assertion
     static_assert(DataRegs_t::luxComputation(0, 0, 1, 100) == 0.0, "lux computation is wrong");
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:805:45: error: 'static constexpr float Mcci_Ltr_329als_Regs::DataRegs_t::luxComputation(uint16_t, uint16_t, uint32_t, uint32_t)' called in a constant expression
     static_assert(DataRegs_t::luxComputation(0, 0, 1, 100) == 0.0, "lux computation is wrong");
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:806:63: error: non-constant condition for static assertion
     static_assert(DataRegs_t::luxComputation(50, 100, 1, 100) != 0.0, "lux computation is wrong");
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:806:45: error: 'static constexpr float Mcci_Ltr_329als_Regs::DataRegs_t::luxComputation(uint16_t, uint16_t, uint32_t, uint32_t)' called in a constant expression
     static_assert(DataRegs_t::luxComputation(50, 100, 1, 100) != 0.0, "lux computation is wrong");
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:807:62: error: non-constant condition for static assertion
     static_assert(DataRegs_t::luxComputation(100, 0, 1, 100) == 177.43f, "lux computation is wrong");
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:807:45: error: 'static constexpr float Mcci_Ltr_329als_Regs::DataRegs_t::luxComputation(uint16_t, uint16_t, uint32_t, uint32_t)' called in a constant expression
     static_assert(DataRegs_t::luxComputation(100, 0, 1, 100) == 177.43f, "lux computation is wrong");
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:808:65: error: non-constant condition for static assertion
     static_assert(DataRegs_t::luxComputation(1000, 100, 4, 200) == 235.6112366f, "lux computation is wrong");
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
c:\Users\palmi\Documents\Arduino\libraries\MCCI_LTR-329ALS\src/mcci_ltr_329als_regs.h:808:45: error: 'static constexpr float Mcci_Ltr_329als_Regs::DataRegs_t::luxComputation(uint16_t, uint16_t, uint32_t, uint32_t)' called in a constant expression
     static_assert(DataRegs_t::luxComputation(1000, 100, 4, 200) == 235.6112366f, "lux computation is wrong");
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~

exit status 1

Compilation error: exit status 1

[terrillmoore]

Needs investigation; obviously, the constexpr semantics in this compiler are different than in the compiler we use. @dhineshkumarmcci, let's not make changes without a discussion; the approach has got to be different based on the nature of the portability problem.

[dhineshkumarmcci]

would like to update the thread. we have reproduced the issue and debugging further.

[Timmy-SR]

I am getting the same. Any more progress on this?