C++ warning list for Makefile

This is almost full list of C++ related compiler warning flags I found for GCC 4.8.

• -pedantic - Turns on pedantic syntax check.
• -Werror - Turns every warning found to error.
• -Wall - Basic warnings that should be turned on in almost every project.
• -Wextra - Extra warnings
• -Wformat=2 - Checks for format routines and their args misusing.
• -Wmissing-include-dirs - Complains when directory specified with -I flag doesn’t exist.
• -Wswitch-default - Checks for default section in switch operator.
• -Wswitch-enum - If switch operator index is of enum, all of enum values should be present as selectors.
• -Wuninitialized - For auto variables. Enough said.
• -Wunused - All of “unused object” cases.
• -Wfloat-equal - Floating-points shouldn’t be compared using basic strict equality operator.
• -Wundef - Some ID, that’s being used in preprocessor directivers, is undefined.
• -Wno-endif-labels - For every #if there should be an #endif.
• -Wshadow - Shadowing variables in outer scopes.
• -Wcast-qual - Pointer type qualifier casting misusing.
• -Wcast-align - Pointer memory-alignment casting errors.
• -Wconversion - For implicit conversions that may change value (like unsigned to signed).
• -Wsign-conversion - Particular case of signed implicit conversion.
• -Wlogical-op - Usage of logical operators where bit-wise operator should be used.
• -Wmissing-declarations - Global function defined without previous declarations (like one in header file).
• -Wno-multichar - No multichar constants (FOOF).
• -Wredundant-decls - Enough said.
• -Wunreachable-code - Enough said.
• -Winline - When inline function cannot be inlined.
• -Winvalid-pch - Enough said.
• -Wvla - No variable-length arrays.
• -Wdouble-promotion - Downcasting double to float
• -Wzero-as-null-pointer-constant - Facilitates nullptr usage instead of zeroes.
• -Wuseless-cast - Enough said.
• -Wvarargs - Misusing varargs.
• -Wsuggest-attribute=pure - Suggests when function (probably) should be declared as pure.
• -Wsuggest-attribute=const - Suggests when function (probably) should be declared as const.
• -Wsuggest-attribute=noreturn - Suggests when function (probably) should be declared as noreturn.
• -Wsuggest-attribute=format - Warn about function pointers that might be candidates for format attributes.

Complete warning list code for Makefile:

WARNINGS = -pedantic -Werror -Wall -Wextra -Wformat=2 -Wmissing-include-dirs
	-Wswitch-default -Wswitch-enum -Wuninitialized -Wunused -Wfloat-equal
	-Wundef -Wno-endif-labels -Wshadow -Wcast-qual -Wcast-align -Wconversion
	-Wsign-conversion -Wlogical-op -Wmissing-declarations -Wno-multichar
	-Wredundant-decls -Wunreachable-code -Winline -Winvalid-pch -Wvla
	-Wdouble-promotion -Wzero-as-null-pointer-constant -Wuseless-cast
	-Wvarargs -Wsuggest-attribute=pure -Wsuggest-attribute=const
	-Wsuggest-attribute=noreturn -Wsuggest-attribute=format