#------------------------------------------------------------------------------
# NetHack 3.7  compiler.2020 $NHDT-Date: 1597332785 2020/08/13 15:33:05 $  $NHDT-Branch: NetHack-3.7 $

# compiler flags:  CCFLAGS is used to construct a value for CFLAGS with
#	various -I, -D, and -W settings appended below;
#	these are the settings of most interest for an end-user build
#	(clang doesn't support '-Og', gcc needs 4.x or later)
CCFLAGS = -g
#CCFLAGS = -g -Og
#CCFLAGS = -O2
#	Note: this is not the usual 'CFLAGS' which is used in default
#	rules for compiling C code; specifying a value for that on the
#	'make' command line should be avoided.

CCISCLANG := $(shell echo `$(CC) --version` | grep clang)
ifeq "$(CCISCLANG)" ""
CXX=g++ -std=gnu++11
else
CXX=clang++ -std=gnu++11
endif
# if you want to override the compiler detection just carried out
# uncomment one of the following pairs as desired.
#CC= gcc
#CXX= g++ -std-gnu++11
#
#CC= clang
#CXX=clang++ -std=gnu++11

CFLAGS=$(CCFLAGS) -I../include -DNOTPARMDECL
CFLAGS+=-Wall -Wextra -Wno-missing-field-initializers \
	-Wreturn-type -Wunused -Wformat -Wswitch -Wshadow -Wwrite-strings
CFLAGS+=-pedantic
CFLAGS+=-Wmissing-declarations
CFLAGS+=-Wformat-nonliteral
# As of LLVM build 2336.1.00, this gives dozens of spurious messages, so
# # leave it out by default.
# #CFLAGS+=-Wunreachable-code
# #
#
# the following are not allowed in C++
CFLAGS+=-Wimplicit
CFLAGS+=-Wimplicit-function-declaration
CFLAGS+=-Wimplicit-int
CFLAGS+=-Wmissing-prototypes
CFLAGS+=-Wold-style-definition
CFLAGS+=-Wstrict-prototypes

CCXXFLAGS = -g -I../include -DNOTPARMDECL
CCXXFLAGS+=-Wall -Wextra -Wno-missing-field-initializers \
        -Wreturn-type -Wunused -Wformat -Wswitch -Wshadow -Wwrite-strings
CCXXFLAGS+=-pedantic
CCXXFLAGS+=-Wmissing-declarations
CCXXFLAGS+=-Wformat-nonliteral

ifeq "$(CCISCLANG)" ""
# gcc-specific follows
CFLAGS+=-Wmissing-parameter-type
ifdef WANT_WIN_QT
CCXXFLAGS+= -Wno-deprecated-copy
endif  # WANT_WIN_QT
# get the version of gcc
GCCGTEQ9 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \>= 9)
ifeq "$(GCCGTEQ9)" "1"
# flags present in gcc version greater than or equal to 9 can go here
CFLAGS+=-Wformat-overflow
endif  #gcc version greater than or equal to 9
#still in gcc-specific section here
# get the version of g++
GPPGTEQ9 := $(shell expr `$(CXX) -dumpversion | cut -f1 -d.` \>= 9)
ifeq "$(GPPGTEQ9)" "1"
CCXXFLAGS+=-Wformat-overflow
ifdef WANT_WIN_QT
CCXXFLAGS+=-Wno-deprecated-copy
endif  # WANT_WIN_QT
endif  # g++ version greater than or equal to 9
# end of gcc-specific

else   # clang-specific follows
# get the version of clang++
CLANGPPGTEQ9 := $(shell expr `$(CXX) -dumpversion | cut -f1 -d.` \>= 9)
ifeq "$(CLANGPPGTEQ9)" "1"
ifdef WANT_WIN_QT
CCXXFLAGS+=-Wno-deprecated-copy
endif  # WANT_WIN_QT
endif  #clang++ greater than or equal to 9

ifdef WANT_WIN_QT
CCXXFLAGS+=-Wno-deprecated-declarations
endif  # WANT_WIN_QT
endif  # clang-specific ends here

# enable some optional code in various NetHack source files
CFLAGS+=-DGCC_WARN
CCXXFLAGS+=-DGCC_WARN

#end of compiler.2020
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