1# List the warnings that are not supported for C++ compilations
2list(APPEND CXX_EXCLUDED_OPTIONS
3  -Werror=implicit-int
4  -Wold-style-definition
5  )
6
7###################################################
8# Setting compiler properties for MWDT compilers. #
9###################################################
10
11#####################################################
12# This section covers flags related to optimization #
13#####################################################
14set_compiler_property(PROPERTY no_optimization -O0)
15set_compiler_property(PROPERTY optimization_debug -O0)
16set_compiler_property(PROPERTY optimization_speed -O2)
17set_compiler_property(PROPERTY optimization_size -Os)
18set_compiler_property(PROPERTY optimization_fast -O3)
19
20#######################################################
21# This section covers flags related to warning levels #
22#######################################################
23
24# options for warnings
25# base options
26set_compiler_property(PROPERTY warning_base
27                      -Wformat
28                      -Wformat-security
29                      -Wno-format-zero-length
30                      -Wno-unaligned-pointer-conversion
31                      -Wno-incompatible-pointer-types-discards-qualifiers
32                      -Wno-typedef-redefinition
33)
34
35# C implicit promotion rules will want to make floats into doubles very easily
36check_set_compiler_property(APPEND PROPERTY warning_base -Wdouble-promotion)
37
38check_set_compiler_property(APPEND PROPERTY warning_base -Wno-pointer-sign)
39
40# Prohibit void pointer arithmetic. Illegal in C99
41check_set_compiler_property(APPEND PROPERTY warning_base -Wpointer-arith)
42
43# level 1 warning options
44set_compiler_property(PROPERTY warning_dw_1
45                      -Wextra
46                      -Wunused
47                      -Wno-unused-parameter
48                      -Wmissing-declarations
49                      -Wmissing-format-attribute
50)
51
52check_set_compiler_property(APPEND PROPERTY warning_dw_1
53                            -Wold-style-definition
54                            -Wmissing-prototypes
55                            -Wmissing-include-dirs
56                            -Wunused-but-set-variable
57                            -Wno-missing-field-initializers
58)
59
60# level 2 warning options
61set_compiler_property(PROPERTY warning_dw_2
62                      -Waggregate-return
63                      -Wcast-align
64                      -Wdisabled-optimization
65                      -Wnested-externs
66                      -Wshadow
67)
68
69check_set_compiler_property(APPEND PROPERTY warning_dw_2
70                            -Wlogical-op
71                            -Wmissing-field-initializers
72)
73
74# level 3 warning options
75set_compiler_property(PROPERTY warning_dw_3
76                      -Wbad-function-cast
77                      -Wcast-qual
78                      -Wconversion
79                      -Wpacked
80                      -Wpadded
81                      -Wpointer-arith
82                      -Wredundant-decls
83                      -Wswitch-default
84)
85
86check_set_compiler_property(APPEND PROPERTY warning_dw_3
87                            -Wpacked-bitfield-compat
88                            -Wvla
89)
90
91# extended warning options
92check_set_compiler_property(PROPERTY warning_extended
93                            -Wno-sometimes-uninitialized
94                            -Wno-shift-overflow
95                            -Wno-missing-braces
96                            -Wno-self-assign
97                            -Wno-address-of-packed-member
98                            -Wno-unused-function
99                            -Wno-initializer-overrides
100                            -Wno-section
101                            -Wno-unknown-warning-option
102                            -Wno-unused-variable
103                            -Wno-format-invalid-specifier
104                            -Wno-gnu
105                            # comparison of unsigned expression < 0 is always false
106                            -Wno-tautological-compare
107)
108
109check_set_compiler_property(PROPERTY warning_error_implicit_int -Werror=implicit-int)
110
111set_compiler_property(PROPERTY warning_error_misra_sane -Werror=vla)
112
113###########################################################################
114# This section covers flags related to C or C++ standards / standard libs #
115###########################################################################
116
117set_compiler_property(PROPERTY cstd -std=)
118
119if (NOT CONFIG_ARCMWDT_LIBC)
120  set_compiler_property(PROPERTY nostdinc -Hno_default_include -Hnoarcexlib -U__STDC_LIB_EXT1__)
121  set_compiler_property(APPEND PROPERTY nostdinc_include ${NOSTDINC})
122endif()
123
124# C++ std options
125set_property(TARGET compiler-cpp PROPERTY dialect_cpp98 "-std=c++98")
126set_property(TARGET compiler-cpp PROPERTY dialect_cpp11 "-std=c++11")
127set_property(TARGET compiler-cpp PROPERTY dialect_cpp14 "-std=c++14")
128set_property(TARGET compiler-cpp PROPERTY dialect_cpp17 "-std=c++17")
129
130# no support of C++2a, C++20, C++2b, C++23
131set_property(TARGET compiler-cpp PROPERTY dialect_cpp2a "")
132set_property(TARGET compiler-cpp PROPERTY dialect_cpp20 "")
133set_property(TARGET compiler-cpp PROPERTY dialect_cpp2b "")
134set_property(TARGET compiler-cpp PROPERTY dialect_cpp23 "")
135
136# Flag for disabling strict aliasing rule in C and C++
137set_compiler_property(PROPERTY no_strict_aliasing -fno-strict-aliasing)
138
139# Flags for set extra warnigs (ARCMWDT asm can't recognize --fatal-warnings. Skip it)
140set_property(TARGET compiler PROPERTY warnings_as_errors -Werror)
141set_property(TARGET asm PROPERTY warnings_as_errors -Werror)
142
143# Disable exceptions flag in C++
144set_property(TARGET compiler-cpp PROPERTY no_exceptions "-fno-exceptions")
145
146# Disable rtti in C++
147set_property(TARGET compiler-cpp PROPERTY no_rtti "-fno-rtti")
148
149###################################################
150# This section covers all remaining C / C++ flags #
151###################################################
152
153# mwdt flag for a freestanding application
154# do not link in supplied run-time startup files
155set_compiler_property(PROPERTY freestanding -Hnocrt)
156
157# Flag to keep DWARF information (enable debug info)
158set_compiler_property(PROPERTY debug -g)
159
160# compile common globals like normal definitions
161set_compiler_property(PROPERTY no_common -fno-common)
162
163# mwdt's coverage mechanism is different with gnu
164# at present, zephyr only support gnu coverage
165set_compiler_property(PROPERTY coverage "")
166
167# mwdt compiler flags for imacros. The specific header must be appended by user.
168set_compiler_property(PROPERTY imacros -imacros)
169
170# assembler compiler flags for imacros. The specific header must be appended by user.
171set_property(TARGET asm PROPERTY imacros -imacros)
172
173# Security canaries.
174#no support of -mstack-protector-guard=global"
175set_compiler_property(PROPERTY security_canaries -fstack-protector)
176set_compiler_property(PROPERTY security_canaries_strong -fstack-protector-strong)
177set_compiler_property(PROPERTY security_canaries_all -fstack-protector-all)
178
179#no support of _FORTIFY_SOURCE"
180set_compiler_property(PROPERTY security_fortify_compile_time)
181set_compiler_property(PROPERTY security_fortify_run_time)
182
183# Required C++ flags when using mwdt
184set_property(TARGET compiler-cpp PROPERTY required "-Hcplus" )
185
186if(CONFIG_ARC)
187  set_property(TARGET compiler-cpp PROPERTY required "-Hoff=Stackcheck_alloca")
188endif()
189
190# Compiler flag for turning off thread-safe initialization of local statics
191set_property(TARGET compiler-cpp PROPERTY no_threadsafe_statics "-fno-threadsafe-statics")
192
193# ARC MWDT does not support -fno-pic and -fno-pie flags,
194# but it has PIE disabled by default - so no extra flags are required here.
195set_compiler_property(PROPERTY no_position_independent "")
196
197set_compiler_property(PROPERTY no_global_merge "")
198
199#################################
200# This section covers asm flags #
201#################################
202
203# Required ASM flags when using mwdt
204set_property(TARGET asm PROPERTY required "-Hasmcpp")
205
206if(CONFIG_ARCMWDT_LIBC)
207  # We rely on the default C/C++ include locations which are provided by MWDT if we do build with
208  # MW C / C++ libraries. However, for that case we still need to explicitly set header directory
209  # to ASM builds (which may use 'stdbool.h').
210  set_property(TARGET asm APPEND PROPERTY required "-I${NOSTDINC}")
211endif()
212
213# Update after testing that -Wshadow and -Wno-array-bounds works
214set_compiler_property(PROPERTY warning_shadow_variables)
215set_compiler_property(PROPERTY warning_no_array_bounds)
216
217set_compiler_property(PROPERTY no_builtin -fno-builtin)
218set_compiler_property(PROPERTY no_builtin_malloc -fno-builtin-malloc)
219
220# Compiler flag for not placing functions in their own sections:
221set_compiler_property(PROPERTY no_function_sections "-fno-function-sections")
222
223# Compiler flag for not placing variables in their own sections:
224set_compiler_property(PROPERTY no_data_sections "-fno-data-sections")
225