summaryrefslogtreecommitdiffstats
path: root/config/cmake/HDFCompilerFlags.cmake
blob: 56277faa4ecacf928c682a01930edb58ec204987 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
#
# Copyright by The HDF Group.
# All rights reserved.
#
# This file is part of HDF5.  The full HDF5 copyright notice, including
# terms governing use, modification, and redistribution, is contained in
# the COPYING file, which can be found at the root of the source code
# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
# If you do not have access to either file, you may request a copy from
# help@hdfgroup.org.
#
#-----------------------------------------------------------------------------
# Compiler specific flags : Shouldn't there be compiler tests for these
#-----------------------------------------------------------------------------
if (CMAKE_COMPILER_IS_GNUCC)
  if (${HDF_CFG_NAME} MATCHES "Debug")
    set (CMAKE_C_FLAGS "${CMAKE_ANSI_CFLAGS} ${CMAKE_C_FLAGS} -std=c99")
    if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 5.0)
      set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Og -ftrapv -fno-common")
    endif ()
  else ()
    set (CMAKE_C_FLAGS "${CMAKE_ANSI_CFLAGS} ${CMAKE_C_FLAGS} -std=c99")
    if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 5.0)
      set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fstdarg-opt")
    endif ()
  endif ()
endif ()
if (CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_LOADED)
  if (${HDF_CFG_NAME} MATCHES "Debug")
    set (CMAKE_CXX_FLAGS "${CMAKE_ANSI_CFLAGS} ${CMAKE_CXX_FLAGS}")
    if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0)
      set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Og -ftrapv -fno-common")
    endif ()
  else ()
    set (CMAKE_CXX_FLAGS "${CMAKE_ANSI_CFLAGS} ${CMAKE_CXX_FLAGS}")
    if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0)
      set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fstdarg-opt")
    endif ()
  endif ()
endif ()

#-----------------------------------------------------------------------------
# Option to allow the user to disable compiler warnings
#-----------------------------------------------------------------------------
option (HDF5_DISABLE_COMPILER_WARNINGS "Disable compiler warnings" OFF)
if (HDF5_DISABLE_COMPILER_WARNINGS)
  # MSVC uses /w to suppress warnings.  It also complains if another
  # warning level is given, so remove it.
  if (MSVC)
    set (HDF5_WARNINGS_BLOCKED 1)
    string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W0")
    string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W0")
  endif ()
  if (WIN32)
    add_definitions (-D_CRT_SECURE_NO_WARNINGS)
  endif ()
  # Borland uses -w- to suppress warnings.
  if (BORLAND)
    set (HDF5_WARNINGS_BLOCKED 1)
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w-")
  endif ()

  # Most compilers use -w to suppress warnings.
  if (NOT HDF5_WARNINGS_BLOCKED)
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
  endif ()
endif ()

#-----------------------------------------------------------------------------
# CDash is configured to only allow 3000 warnings, so
# break into groups (from the config/gnu-flags file)
#-----------------------------------------------------------------------------
if (NOT MSVC AND CMAKE_COMPILER_IS_GNUCC)
  if (NOT ${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
    set (CMAKE_C_FLAGS_5 "${CMAKE_C_FLAGS_5} -Wcast-qual")
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-align -Wwrite-strings -Wconversion -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls -Wnested-externs")
  else ()
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -erroff=%none -DBSD_COMP")
  endif ()

    #-----------------------------------------------------------------------------
    # Option to allow the user to enable developer warnings
    #-----------------------------------------------------------------------------
    option (HDF5_ENABLE_DEV_WARNINGS "Enable HDF5 developer group warnings" OFF)
    if (HDF5_ENABLE_DEV_WARNINGS)
      set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Winline -Waggregate-return")
    else ()
      set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-parameter -Wno-inline -Wno-aggregate-return")
    endif ()

    # Append warning flags
    # Don't use the '-Wtraditional' flag, we're way past having K&R C code
    # set (H5_CFLAGS "${H5_CFLAGS} -Wtraditional")
    # Don't use the '-Wtraditional-conversion' flag, there's too many warnings
    #  from GCC's assert macro
    # set (H5_CFLAGS "${H5_CFLAGS} -Wtraditional-conversion")

    # Append warning flags from gcc-3* case
    # (don't use -Wpadded flag for normal builds, many of the warnings its
    #   issuing can't be fixed and they are making it hard to detect other,
    #   more important warnings)
    #set (H5_CFLAGS "${H5_CFLAGS} -Wfloat-equal -Wmissing-format-attribute -Wpadded")
    set (H5_CFLAGS1 "${H5_CFLAGS1} -Wfloat-equal -Wmissing-format-attribute")

    # Append warning flags from gcc-3.2* case
    set (H5_CFLAGS1 "${H5_CFLAGS1} -Wpacked -Wdisabled-optimization")
    if (HDF5_ENABLE_DEV_WARNINGS)
      set (H5_CFLAGS1 "${H5_CFLAGS1} -Wmissing-noreturn")
    else ()
      set (H5_CFLAGS1 "${H5_CFLAGS1} -Wno-missing-noreturn")
    endif ()

    # Enable more format checking flags, beyond the basic -Wformat included
    # in -Wall
    set (H5_CFLAGS1_5 "${H5_CFLAGS1_5} -Wformat=2")

    # Append warning flags from gcc-3.3* case
    set (H5_CFLAGS1 "${H5_CFLAGS1} -Wendif-labels")

    # Append warning flags from gcc-3.4* case
    set (H5_CFLAGS1 "${H5_CFLAGS1} -Wdeclaration-after-statement -Wold-style-definition -Winvalid-pch")

    # Append more extra warning flags that only gcc4.0+ know about
    set (H5_CFLAGS2 "${H5_CFLAGS2} -Wvariadic-macros -Winit-self -Wmissing-include-dirs -Wswitch-default -Wswitch-enum -Wunused-macros")

    # Append more extra warning flags that only gcc 4.1+ know about
    set (H5_CFLAGS2_5 "${H5_CFLAGS2_5} -Wunsafe-loop-optimizations")
    set (H5_CFLAGS2 "${H5_CFLAGS2} -Wc++-compat")

    # Append more extra warning flags that only gcc 4.2+ know about
    set (H5_CFLAGS2_5 "${H5_CFLAGS2_5} -Wstrict-overflow")
    set (H5_CFLAGS2 "${H5_CFLAGS2} -Wno-strict-overflow")

    # Append more extra warning flags that only gcc 4.3+ know about
    #
    # Technically, variable-length arrays are part of the C99 standard, but
    #   we should approach them a bit cautiously... -QAK
    set (H5_CFLAGS2 "${H5_CFLAGS2} -Wlogical-op -Wlarger-than=2048 -Wvla")

    # Append more extra warning flags that only gcc 4.4+ know about
    set (H5_CFLAGS2 "${H5_CFLAGS2} -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat")

    # Append more extra warning flags that only gcc 4.5+ know about
    if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.5)
      set (H5_CFLAGS2_5 "${H5_CFLAGS2_5} -Wstrict-overflow=5 -Wjump-misses-init -Wunsuffixed-float-constants")
      set (H5_CFLAGS2 "${H5_CFLAGS2} -Wjump-misses-init -Wunsuffixed-float-constants")
    endif ()

    # Append more extra warning flags that only gcc 4.6+ know about
    if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.6)
      set (H5_CFLAGS2 "${H5_CFLAGS2} -Wdouble-promotion -Wtrampolines")
      if (HDF5_ENABLE_DEV_WARNINGS)
        set (H5_CFLAGS2 "${H5_CFLAGS2} -Wsuggest-attribute=const")
      else ()
        set (H5_CFLAGS2 "${H5_CFLAGS2} -Wno-suggest-attribute=const")
      endif ()
    endif ()

    # The "unreachable code" warning appears to be reliable now...
    # (this warning was removed in gcc 4.5+)
    if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.7)
      set (H5_CFLAGS2 "${H5_CFLAGS2} -Wunreachable-code")
    endif ()

    # Append more extra warning flags that only gcc 4.7+ know about
    if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.7)
      set (H5_CFLAGS2 "${H5_CFLAGS2} -Wstack-usage=8192 -Wvector-operation-performance")
      if (HDF5_ENABLE_DEV_WARNINGS)
        set (H5_CFLAGS2 "${H5_CFLAGS2} -Wsuggest-attribute=pure -Wsuggest-attribute=noreturn")
      else ()
        set (H5_CFLAGS2 "${H5_CFLAGS2} -Wno-suggest-attribute=pure -Wno-suggest-attribute=noreturn")
      endif ()
    endif ()

    # Append more extra warning flags that only gcc 4.8+ know about
    if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.8)
      if (HDF5_ENABLE_DEV_WARNINGS)
        set (H5_CFLAGS2 "${H5_CFLAGS2} -Wsuggest-attribute=format")
      else ()
        set (H5_CFLAGS2 "${H5_CFLAGS2} -Wno-suggest-attribute=format")
      endif ()
    endif ()

    # Append more extra warning flags that only gcc 4.9+ know about
    if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.9)
      set (H5_CFLAGS2 "${H5_CFLAGS2} -Wdate-time -Wopenmp-simd")
    endif ()

    # (There was no release of gcc 5.0)

    # Append more extra warning flags that only gcc 5.1+ know about
    if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 5.1)
      set (H5_CFLAGS3 "${H5_CFLAGS3} -Warray-bounds=2 -Wc99-c11-compat")
    endif ()

    # Append more extra warning flags that only gcc 6.x+ know about
    if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 6.0)
      set (H5_CFLAGS4 "${H5_CFLAGS4} -Wnull-dereference -Wunused-const-variable -Wduplicated-cond -Whsa")
    endif ()

endif ()

#-----------------------------------------------------------------------------
# Option to allow the user to enable all warnings
#-----------------------------------------------------------------------------
option (HDF5_ENABLE_ALL_WARNINGS "Enable all warnings" OFF)
if (HDF5_ENABLE_ALL_WARNINGS)
  if (MSVC)
    if (HDF5_ENABLE_DEV_WARNINGS)
      string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
      set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Wall /wd4668")
      string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
      set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Wall /wd4668")
    else ()
      string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
      set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W3")
      string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
      set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W3")
    endif ()
  else ()
    if (CMAKE_COMPILER_IS_GNUCC)
      set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -pedantic ${H5_CFLAGS1} ${H5_CFLAGS2}")
    endif ()
  endif ()
endif ()

#-----------------------------------------------------------------------------
# Option to allow the user to enable warnings by groups
#-----------------------------------------------------------------------------
option (HDF5_ENABLE_GROUPZERO_WARNINGS "Enable group zero warnings" OFF)
if (HDF5_ENABLE_GROUPZERO_WARNINGS)
  if (MSVC)
    string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W1")
    string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W1")
  else ()
    if (CMAKE_COMPILER_IS_GNUCC)
      set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -pedantic")
    endif ()
  endif ()
endif ()

#-----------------------------------------------------------------------------
# Option to allow the user to enable warnings by groups
#-----------------------------------------------------------------------------
option (HDF5_ENABLE_GROUPONE_WARNINGS "Enable group one warnings" OFF)
if (HDF5_ENABLE_GROUPONE_WARNINGS)
  if (MSVC)
    string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W2")
    string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W2")
  else ()
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${H5_CFLAGS1}")
  endif ()
endif ()

#-----------------------------------------------------------------------------
# Option to allow the user to enable warnings by groups
#-----------------------------------------------------------------------------
option (HDF5_ENABLE_GROUPTWO_WARNINGS "Enable group two warnings" OFF)
if (HDF5_ENABLE_GROUPTWO_WARNINGS)
  if (MSVC)
    string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W3")
    string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W3")
  else ()
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${H5_CFLAGS2}")
  endif ()
endif ()

#-----------------------------------------------------------------------------
# Option to allow the user to enable warnings by groups
#-----------------------------------------------------------------------------
option (HDF5_ENABLE_GROUPTHREE_WARNINGS "Enable group three warnings" OFF)
if (HDF5_ENABLE_GROUPTHREE_WARNINGS)
  if (MSVC)
    string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W4")
    string (REGEX REPLACE "(^| )([/-])W[0-9]( |$)" " " CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
  else ()
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${H5_CFLAGS3}")
  endif ()
endif ()

#-----------------------------------------------------------------------------
# Option to allow the user to enable warnings by groups
#-----------------------------------------------------------------------------
option (HDF5_ENABLE_GROUPFOUR_WARNINGS "Enable group four warnings" OFF)
if (HDF5_ENABLE_GROUPFOUR_WARNINGS)
  if (NOT MSVC)
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${H5_CFLAGS4}")
  endif ()
endif ()

#-----------------------------------------------------------------------------
# This is in here to help some of the GCC based IDES like Eclipse
# and code blocks parse the compiler errors and warnings better.
#-----------------------------------------------------------------------------
if (CMAKE_COMPILER_IS_GNUCC)
  set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fmessage-length=0")
endif ()
if (CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_LOADED)
  set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fmessage-length=0")
endif ()