Temp save for Monty.
[awesomized/libmemcached] / m4 / pandora_warnings.m4
1 dnl Copyright (C) 2009 Sun Microsystems
2 dnl This file is free software; Sun Microsystems
3 dnl gives unlimited permission to copy and/or distribute it,
4 dnl with or without modifications, as long as this notice is preserved.
5
6 dnl AC_PANDORA_WARNINGS([less-warnings|warnings-always-on])
7 dnl less-warnings turn on a limited set of warnings
8 dnl warnings-always-on always set warnings=error regardless of tarball/vc
9
10 dnl @TODO: remove less-warnings option as soon as Drizzle is clean enough to
11 dnl allow it
12
13 AC_DEFUN([PANDORA_WARNINGS],[
14 m4_define([PW_LESS_WARNINGS],[no])
15 m4_define([PW_WARN_ALWAYS_ON],[no])
16 ifdef([m4_define],,[define([m4_define], defn([define]))])
17 ifdef([m4_undefine],,[define([m4_undefine], defn([undefine]))])
18 m4_foreach([pw_arg],[$*],[
19 m4_case(pw_arg,
20 [less-warnings],[
21 m4_undefine([PW_LESS_WARNINGS])
22 m4_define([PW_LESS_WARNINGS],[yes])
23 ],
24 [warnings-always-on],[
25 m4_undefine([PW_WARN_ALWAYS_ON])
26 m4_define([PW_WARN_ALWAYS_ON],[yes])
27 ])
28 ])
29
30 AC_REQUIRE([PANDORA_BUILDING_FROM_VC])
31 m4_if(PW_WARN_ALWAYS_ON, [yes],
32 [ac_cv_warnings_as_errors=yes],
33 AS_IF([test "$ac_cv_building_from_vc" = "yes"],
34 [ac_cv_warnings_as_errors=yes],
35 [ac_cv_warnings_as_errors=no]))
36
37 AC_ARG_ENABLE([profiling],
38 [AS_HELP_STRING([--enable-profiling],
39 [Toggle profiling @<:@default=off@:>@])],
40 [ac_profiling="$enableval"],
41 [ac_profiling="no"])
42
43 AC_ARG_ENABLE([coverage],
44 [AS_HELP_STRING([--enable-coverage],
45 [Toggle coverage @<:@default=off@:>@])],
46 [ac_coverage="$enableval"],
47 [ac_coverage="no"])
48
49 AS_IF([test "$GCC" = "yes"],[
50
51 AS_IF([test "$ac_profiling" = "yes"],[
52 CC_PROFILING="-pg"
53 GCOV_LIBS="-pg -lgcov"
54 save_LIBS="${LIBS}"
55 LIBS=""
56 AC_CHECK_LIB(c_p, read)
57 LIBC_P="${LIBS}"
58 LIBS="${save_LIBS}"
59 AC_SUBST(LIBC_P)
60 ],[
61 CC_PROFILING=" "
62 ])
63
64 AS_IF([test "$ac_coverage" = "yes"],
65 [
66 CC_COVERAGE="--coverage"
67 GCOV_LIBS="-lgcov"
68 ])
69
70
71
72 AS_IF([test "$ac_cv_warnings_as_errors" = "yes"],
73 [W_FAIL="-Werror"])
74
75 AC_CACHE_CHECK([whether it is safe to use -fdiagnostics-show-option],
76 [ac_cv_safe_to_use_fdiagnostics_show_option_],
77 [save_CFLAGS="$CFLAGS"
78 CFLAGS="-fdiagnostics-show-option ${AM_CFLAGS} ${CFLAGS}"
79 AC_COMPILE_IFELSE(
80 [AC_LANG_PROGRAM([],[])],
81 [ac_cv_safe_to_use_fdiagnostics_show_option_=yes],
82 [ac_cv_safe_to_use_fdiagnostics_show_option_=no])
83 CFLAGS="$save_CFLAGS"])
84
85 AS_IF([test "$ac_cv_safe_to_use_fdiagnostics_show_option_" = "yes"],
86 [
87 F_DIAGNOSTICS_SHOW_OPTION="-fdiagnostics-show-option"
88 ])
89
90 AC_CACHE_CHECK([whether it is safe to use -Wconversion],
91 [ac_cv_safe_to_use_wconversion_],
92 [save_CFLAGS="$CFLAGS"
93 dnl Use -Werror here instead of ${W_FAIL} so that we don't spew
94 dnl conversion warnings to all the tarball folks
95 CFLAGS="-Wconversion -Werror -pedantic ${AM_CFLAGS} ${CFLAGS}"
96 AC_COMPILE_IFELSE(
97 [AC_LANG_PROGRAM([[
98 #include <stdbool.h>
99 void foo(bool a)
100 {
101 (void)a;
102 }
103 ]],[[
104 foo(0);
105 ]])],
106 [ac_cv_safe_to_use_wconversion_=yes],
107 [ac_cv_safe_to_use_wconversion_=no])
108 CFLAGS="$save_CFLAGS"])
109
110 AS_IF([test "$ac_cv_safe_to_use_wconversion_" = "yes"],
111 [W_CONVERSION="-Wconversion"
112 AC_CACHE_CHECK([whether it is safe to use -Wconversion with htons],
113 [ac_cv_safe_to_use_Wconversion_],
114 [save_CFLAGS="$CFLAGS"
115 dnl Use -Werror here instead of ${W_FAIL} so that we don't spew
116 dnl conversion warnings to all the tarball folks
117 CFLAGS="-Wconversion -Werror -pedantic ${AM_CFLAGS} ${CFLAGS}"
118 AC_COMPILE_IFELSE(
119 [AC_LANG_PROGRAM(
120 [[
121 #include <netinet/in.h>
122 ]],[[
123 uint16_t x= htons(80);
124 ]])],
125 [ac_cv_safe_to_use_Wconversion_=yes],
126 [ac_cv_safe_to_use_Wconversion_=no])
127 CFLAGS="$save_CFLAGS"])
128
129 AS_IF([test "$ac_cv_safe_to_use_Wconversion_" = "no"],
130 [NO_CONVERSION="-Wno-conversion"])
131 ])
132
133 NO_STRICT_ALIASING="-fno-strict-aliasing -Wno-strict-aliasing"
134 NO_SHADOW="-Wno-shadow"
135
136 AS_IF([test "$INTELCC" = "yes"],[
137 m4_if(PW_LESS_WARNINGS,[no],[
138 BASE_WARNINGS="-w1 -Werror -Wcheck -Wformat -Wp64 -Woverloaded-virtual -Wcast-qual"
139 ],[
140 BASE_WARNINGS="-w1 -Wcheck -Wformat -Wp64 -Woverloaded-virtual -Wcast-qual -diag-disable 981"
141 ])
142 CC_WARNINGS="${BASE_WARNINGS}"
143 CXX_WARNINGS="${BASE_WARNINGS}"
144 ],[
145 m4_if(PW_LESS_WARNINGS,[no],[
146 BASE_WARNINGS_FULL="-Wformat=2 ${W_CONVERSION} -Wstrict-aliasing"
147 CC_WARNINGS_FULL="-Wswitch-default -Wswitch-enum -Wwrite-strings"
148 CXX_WARNINGS_FULL="-Weffc++ -Wold-style-cast"
149 ],[
150 BASE_WARNINGS_FULL="-Wformat ${NO_STRICT_ALIASING}"
151 ])
152
153 AS_IF([test "${ac_cv_assert}" = "no"],
154 [NO_UNUSED="-Wno-unused-variable -Wno-unused-parameter"])
155
156 AC_CACHE_CHECK([whether it is safe to use -Wextra],
157 [ac_cv_safe_to_use_Wextra_],
158 [save_CFLAGS="$CFLAGS"
159 CFLAGS="${W_FAIL} -pedantic -Wextra ${AM_CFLAGS} ${CFLAGS}"
160 AC_COMPILE_IFELSE([
161 AC_LANG_PROGRAM(
162 [[
163 #include <stdio.h>
164 ]], [[]])
165 ],
166 [ac_cv_safe_to_use_Wextra_=yes],
167 [ac_cv_safe_to_use_Wextra_=no])
168 CFLAGS="$save_CFLAGS"])
169
170 BASE_WARNINGS="${W_FAIL} -pedantic -Wall -Wundef -Wshadow ${NO_UNUSED} ${F_DIAGNOSTICS_SHOW_OPTION} ${CFLAG_VISIBILITY} ${BASE_WARNINGS_FULL}"
171 AS_IF([test "$ac_cv_safe_to_use_Wextra_" = "yes"],
172 [BASE_WARNINGS="${BASE_WARNINGS} -Wextra"],
173 [BASE_WARNINGS="${BASE_WARNINGS} -W"])
174
175 CC_WARNINGS="${BASE_WARNINGS} -Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wmissing-declarations -Wcast-align ${CC_WARNINGS_FULL}"
176 CXX_WARNINGS="${BASE_WARNINGS} -Woverloaded-virtual -Wnon-virtual-dtor -Wctor-dtor-privacy -Wno-long-long ${CXX_WARNINGS_FULL}"
177
178 AC_CACHE_CHECK([whether it is safe to use -Wmissing-declarations from C++],
179 [ac_cv_safe_to_use_Wmissing_declarations_],
180 [AC_LANG_PUSH(C++)
181 save_CXXFLAGS="$CXXFLAGS"
182 CXXFLAGS="-Werror -pedantic -Wmissing-declarations ${AM_CXXFLAGS}"
183 AC_COMPILE_IFELSE([
184 AC_LANG_PROGRAM(
185 [[
186 #include <stdio.h>
187 ]], [[]])
188 ],
189 [ac_cv_safe_to_use_Wmissing_declarations_=yes],
190 [ac_cv_safe_to_use_Wmissing_declarations_=no])
191 CXXFLAGS="$save_CXXFLAGS"
192 AC_LANG_POP()
193 ])
194 AS_IF([test "$ac_cv_safe_to_use_Wmissing_declarations_" = "yes"],
195 [CXX_WARNINGS="${CXX_WARNINGS} -Wmissing-declarations"])
196
197 AC_CACHE_CHECK([whether it is safe to use -Wlogical-op],
198 [ac_cv_safe_to_use_Wlogical_op_],
199 [save_CFLAGS="$CFLAGS"
200 CFLAGS="${W_FAIL} -pedantic -Wlogical-op ${AM_CFLAGS} ${CFLAGS}"
201 AC_COMPILE_IFELSE([
202 AC_LANG_PROGRAM(
203 [[
204 #include <stdio.h>
205 ]], [[]])
206 ],
207 [ac_cv_safe_to_use_Wlogical_op_=yes],
208 [ac_cv_safe_to_use_Wlogical_op_=no])
209 CFLAGS="$save_CFLAGS"])
210 AS_IF([test "$ac_cv_safe_to_use_Wlogical_op_" = "yes"],
211 [CC_WARNINGS="${CC_WARNINGS} -Wlogical-op"])
212
213 AC_CACHE_CHECK([whether it is safe to use -Wredundant-decls from C++],
214 [ac_cv_safe_to_use_Wredundant_decls_],
215 [AC_LANG_PUSH(C++)
216 save_CXXFLAGS="${CXXFLAGS}"
217 CXXFLAGS="${W_FAIL} -pedantic -Wredundant-decls ${AM_CXXFLAGS}"
218 AC_COMPILE_IFELSE(
219 [AC_LANG_PROGRAM([
220 template <typename E> struct C { void foo(); };
221 template <typename E> void C<E>::foo() { }
222 template <> void C<int>::foo();
223 AC_INCLUDES_DEFAULT])],
224 [ac_cv_safe_to_use_Wredundant_decls_=yes],
225 [ac_cv_safe_to_use_Wredundant_decls_=no])
226 CXXFLAGS="${save_CXXFLAGS}"
227 AC_LANG_POP()])
228 AS_IF([test "$ac_cv_safe_to_use_Wredundant_decls_" = "yes"],
229 [CXX_WARNINGS="${CXX_WARNINGS} -Wredundant-decls"],
230 [CXX_WARNINGS="${CXX_WARNINGS} -Wno-redundant-decls"])
231
232 AC_CACHE_CHECK([whether it is safe to use -Wattributes from C++],
233 [ac_cv_safe_to_use_Wattributes_],
234 [AC_LANG_PUSH(C++)
235 save_CXXFLAGS="${CXXFLAGS}"
236 CXXFLAGS="${W_FAIL} -pedantic -Wattributes -fvisibility=hidden ${AM_CXXFLAGS}"
237 AC_COMPILE_IFELSE(
238 [AC_LANG_PROGRAM([
239 #include <google/protobuf/message.h>
240 #include <google/protobuf/descriptor.h>
241
242
243 const ::google::protobuf::EnumDescriptor* Table_TableOptions_RowType_descriptor();
244 enum Table_TableOptions_RowType {
245 Table_TableOptions_RowType_ROW_TYPE_DEFAULT = 0,
246 Table_TableOptions_RowType_ROW_TYPE_FIXED = 1,
247 Table_TableOptions_RowType_ROW_TYPE_DYNAMIC = 2,
248 Table_TableOptions_RowType_ROW_TYPE_COMPRESSED = 3,
249 Table_TableOptions_RowType_ROW_TYPE_REDUNDANT = 4,
250 Table_TableOptions_RowType_ROW_TYPE_COMPACT = 5,
251 Table_TableOptions_RowType_ROW_TYPE_PAGE = 6
252 };
253
254 namespace google {
255 namespace protobuf {
256 template <>
257 inline const EnumDescriptor* GetEnumDescriptor<Table_TableOptions_RowType>() {
258 return Table_TableOptions_RowType_descriptor();
259 }
260 }
261 }
262 ])],
263 [ac_cv_safe_to_use_Wattributes_=yes],
264 [ac_cv_safe_to_use_Wattributes_=no])
265 CXXFLAGS="${save_CXXFLAGS}"
266 AC_LANG_POP()])
267 AC_CACHE_CHECK([whether it is safe to use -Wno-attributes],
268 [ac_cv_safe_to_use_Wno_attributes_],
269 [save_CFLAGS="$CFLAGS"
270 CFLAGS="${W_FAIL} -pedantic -Wno_attributes_ ${AM_CFLAGS} ${CFLAGS}"
271 AC_COMPILE_IFELSE([
272 AC_LANG_PROGRAM(
273 [[
274 #include <stdio.h>
275 ]], [[]])
276 ],
277 [ac_cv_safe_to_use_Wno_attributes_=yes],
278 [ac_cv_safe_to_use_Wno_attributes_=no])
279 CFLAGS="$save_CFLAGS"])
280
281 dnl GCC 3.4 doesn't have -Wno-attributes, so we can't turn them off
282 dnl by using that.
283 AS_IF([test "$ac_cv_safe_to_use_Wattributes_" != "yes"],[
284 AS_IF([test "$ac_cv_safe_to_use_Wno_attributes_" = "yes"],[
285 CC_WARNINGS="${CC_WARNINGS} -Wno-attributes"
286 NO_ATTRIBUTES="-Wno-attributes"])])
287
288
289 NO_REDUNDANT_DECLS="-Wno-redundant-decls"
290 dnl TODO: Figure out a better way to deal with this:
291 PROTOSKIP_WARNINGS="-Wno-effc++ -Wno-shadow -Wno-missing-braces ${NO_ATTRIBUTES}"
292 NO_WERROR="-Wno-error"
293 INNOBASE_SKIP_WARNINGS="-Wno-shadow -Wno-cast-align"
294
295 ])
296 ])
297
298 AS_IF([test "$SUNCC" = "yes"],[
299
300 AS_IF([test "$ac_profiling" = "yes"],
301 [CC_PROFILING="-xinstrument=datarace"])
302
303 AS_IF([test "$ac_cv_warnings_as_errors" = "yes"],
304 [W_FAIL="-errwarn=%all"])
305
306 AC_CACHE_CHECK([whether E_PASTE_RESULT_NOT_TOKEN is usable],
307 [ac_cv_paste_result],
308 [
309 save_CFLAGS="${CFLAGS}"
310 CFLAGS="-errwarn=%all -erroff=E_PASTE_RESULT_NOT_TOKEN ${CFLAGS}"
311 AC_COMPILE_IFELSE(
312 [AC_LANG_PROGRAM([
313 AC_INCLUDES_DEFAULT
314 ],[
315 int x= 0;])],
316 [ac_cv_paste_result=yes],
317 [ac_cv_paste_result=no])
318 CFLAGS="${save_CFLAGS}"
319 ])
320 AS_IF([test $ac_cv_paste_result = yes],
321 [W_PASTE_RESULT=",E_PASTE_RESULT_NOT_TOKEN"])
322
323
324 m4_if(PW_LESS_WARNINGS, [no],[
325 CC_WARNINGS_FULL="-erroff=E_INTEGER_OVERFLOW_DETECTED${W_PASTE_RESULT}"
326 CXX_WARNINGS_FULL="-erroff=inllargeuse"
327 ],[
328 CC_WARNINGS_FULL="-erroff=E_ATTRIBUTE_NOT_VAR"
329 CXX_WARNINGS_FULL="-erroff=attrskipunsup,doubunder,reftotemp,inllargeuse,truncwarn1,signextwarn,inllargeint"
330 ])
331
332 CC_WARNINGS="-v -errtags=yes ${W_FAIL} ${CC_WARNINGS_FULL} ${CFLAG_VISIBILITY}"
333 CXX_WARNINGS="+w +w2 -xwe -xport64 -errtags=yes ${CXX_WARNINGS_FULL} ${W_FAIL} ${CFLAG_VISIBILITY}"
334 PROTOSKIP_WARNINGS="-erroff=attrskipunsup,doubunder,reftotemp,wbadinitl,identexpected,inllargeuse,truncwarn1,signextwarn,partinit,notused,badargtype2w,wbadinit"
335 NO_UNREACHED="-erroff=E_STATEMENT_NOT_REACHED"
336 NO_WERROR="-errwarn=%none"
337
338 ])
339
340 AC_SUBST(NO_CONVERSION)
341 AC_SUBST(NO_REDUNDANT_DECLS)
342 AC_SUBST(NO_UNREACHED)
343 AC_SUBST(NO_SHADOW)
344 AC_SUBST(NO_STRICT_ALIASING)
345 AC_SUBST(PROTOSKIP_WARNINGS)
346 AC_SUBST(INNOBASE_SKIP_WARNINGS)
347 AC_SUBST(NO_WERROR)
348 AC_SUBST([GCOV_LIBS])
349
350 ])