git.m6w6.name Git - awesomized/libmemcached/blob - m4/pandora_warnings.m4

   1 dnl  Copyright (C) 2009 Sun Microsystems, Inc.
   2 dnl This file is free software; Sun Microsystems, Inc.
   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],[$*],[
  19     m4_case(pw_arg,
  20       [less-warnings],[
  21         m4_undefine([PW_LESS_WARNINGS])
  22         m4_define([PW_LESS_WARNINGS],[yes])
  23       ],
  24       [warnings-always-on],[
  25         m4_undefine([PW_WARN_ALWAYS_ON])
  26         m4_define([PW_WARN_ALWAYS_ON],[yes])
  27     ])
  28   ])
  29
  30   m4_if(PW_WARN_ALWAYS_ON, [yes],
  31     [ac_cv_warnings_as_errors=yes],
  32     AS_IF([test "$pandora_building_from_vc" = "yes"],
  33           [ac_cv_warnings_as_errors=yes],
  34           [ac_cv_warnings_as_errors=no]))
  35
  36   AC_ARG_ENABLE([gcc-profile-mode],
  37       [AS_HELP_STRING([--enable-gcc-profile-mode],
  38          [Toggle gcc profile mode @<:@default=off@:>@])],
  39       [ac_gcc_profile_mode="$enableval"],
  40       [ac_gcc_profile_mode="no"])
  41
  42   AC_ARG_ENABLE([profiling],
  43       [AS_HELP_STRING([--enable-profiling],
  44          [Toggle profiling @<:@default=off@:>@])],
  45       [ac_profiling="$enableval"],
  46       [ac_profiling="no"])
  47
  48   AC_ARG_ENABLE([coverage],
  49       [AS_HELP_STRING([--enable-coverage],
  50          [Toggle coverage @<:@default=off@:>@])],
  51       [ac_coverage="$enableval"],
  52       [ac_coverage="no"])
  53
  54   AS_IF([test "$GCC" = "yes"],[
  55
  56     AS_IF([test "$ac_profiling" = "yes"],[
  57       CC_PROFILING="-pg"
  58       GCOV_LIBS="-pg -lgcov"
  59       save_LIBS="${LIBS}"
  60       LIBS=""
  61       AC_CHECK_LIB(c_p, read)
  62       LIBC_P="${LIBS}"
  63       LIBS="${save_LIBS}"
  64       AC_SUBST(LIBC_P)
  65     ],[
  66       CC_PROFILING=" "
  67     ])
  68
  69     AS_IF([test "$ac_coverage" = "yes"],
  70           [
  71             CC_COVERAGE="--coverage"
  72             GCOV_LIBS="-lgcov"
  73           ])
  74
  75
  76
  77     AS_IF([test "$ac_cv_warnings_as_errors" = "yes"],[
  78       W_FAIL="-Werror"
  79       SPHINX_WARNINGS="-W -n"
  80       INTLTOOL_WARNINGS="yes"
  81     ])
  82
  83     AC_CACHE_CHECK([whether it is safe to use -fdiagnostics-show-option],
  84       [ac_cv_safe_to_use_fdiagnostics_show_option_],
  85       [save_CFLAGS="$CFLAGS"
  86        CFLAGS="-fdiagnostics-show-option ${AM_CFLAGS} ${CFLAGS}"
  87        AC_COMPILE_IFELSE(
  88          [AC_LANG_PROGRAM([],[])],
  89          [ac_cv_safe_to_use_fdiagnostics_show_option_=yes],
  90          [ac_cv_safe_to_use_fdiagnostics_show_option_=no])
  91        CFLAGS="$save_CFLAGS"])
  92
  93     AS_IF([test "$ac_cv_safe_to_use_fdiagnostics_show_option_" = "yes"],
  94           [
  95             F_DIAGNOSTICS_SHOW_OPTION="-fdiagnostics-show-option"
  96           ])
  97
  98     AC_CACHE_CHECK([whether it is safe to use -floop-parallelize-all],
  99       [ac_cv_safe_to_use_floop_parallelize_all_],
 100       [save_CFLAGS="$CFLAGS"
 101        CFLAGS="-Werror -floop-parallelize-all ${AM_CFLAGS} ${CFLAGS}"
 102        AC_COMPILE_IFELSE(
 103          [AC_LANG_PROGRAM([],[])],
 104          [ac_cv_safe_to_use_floop_parallelize_all_=yes],
 105          [ac_cv_safe_to_use_floop_parallelize_all_=no])
 106        CFLAGS="$save_CFLAGS"])
 107
 108     AS_IF([test "$ac_cv_safe_to_use_floop_parallelize_all_" = "yes"],
 109           [
 110             F_LOOP_PARALLELIZE_ALL="-floop-parallelize-all"
 111           ])
 112
 113     NO_STRICT_ALIASING="-fno-strict-aliasing -Wno-strict-aliasing"
 114     NO_SHADOW="-Wno-shadow"
 115
 116     AS_IF([test "$INTELCC" = "yes"],[
 117       m4_if(PW_LESS_WARNINGS,[no],[
 118         BASE_WARNINGS="-w1 -Werror -Wcheck -Wp64 -Woverloaded-virtual -Wcast-qual -diag-disable 188"
 119       ],[
 120         dnl 2203 is like old-style-cast
 121         dnl 1684 is like strict-aliasing
 122         dnl 188 is about using enums as bitfields
 123         dnl 1683 is a warning about _EXPLICIT_ casting, which we want
 124         BASE_WARNINGS="-w1 -Werror -Wcheck -Wp64 -Woverloaded-virtual -Wcast-qual -diag-disable 188,981,2259,2203,1683,1684"
 125       ])
 126       CC_WARNINGS="${BASE_WARNINGS}"
 127       CXX_WARNINGS="${BASE_WARNINGS}"
 128       PROTOSKIP_WARNINGS="-diag-disable 188,981,967,2259,1683,1684,2203"
 129
 130     ],[
 131       m4_if(PW_LESS_WARNINGS,[no],[
 132         BASE_WARNINGS_FULL="${W_CONVERSION} -Wstrict-aliasing -Wswitch-enum "
 133         CC_WARNINGS_FULL="-Wswitch-default -Wswitch-enum -Wwrite-strings"
 134         CXX_WARNINGS_FULL=""
 135         NO_OLD_STYLE_CAST="-Wno-old-style-cast"
 136         NO_EFF_CXX="-Wno-effc++"
 137       ],[
 138         BASE_WARNINGS_FULL="${NO_STRICT_ALIASING}"
 139       ])
 140
 141       AS_IF([test "${ac_cv_assert}" = "no"],
 142             [NO_UNUSED="-Wno-unused-variable -Wno-unused-parameter"])
 143
 144       AC_CACHE_CHECK([whether it is safe to use -Wextra],
 145         [ac_cv_safe_to_use_Wextra_],
 146         [save_CFLAGS="$CFLAGS"
 147          CFLAGS="${W_FAIL} -pedantic -Wextra ${AM_CFLAGS} ${CFLAGS}"
 148          AC_COMPILE_IFELSE([
 149            AC_LANG_PROGRAM(
 150            [[
 151 #include <stdio.h>
 152            ]], [[]])
 153         ],
 154         [ac_cv_safe_to_use_Wextra_=yes],
 155         [ac_cv_safe_to_use_Wextra_=no])
 156       CFLAGS="$save_CFLAGS"])
 157
 158       BASE_WARNINGS="${W_FAIL} -pedantic -Wall -Wundef -Wshadow -Wparentheses ${NO_UNUSED} ${F_DIAGNOSTICS_SHOW_OPTION} ${F_LOOP_PARALLELIZE_ALL} ${BASE_WARNINGS_FULL}"
 159       AS_IF([test "$ac_cv_safe_to_use_Wextra_" = "yes"],
 160             [BASE_WARNINGS="${BASE_WARNINGS} -Wextra"],
 161             [BASE_WARNINGS="${BASE_WARNINGS} -W"])
 162
 163       AC_CACHE_CHECK([whether it is safe to use -Wformat],
 164         [ac_cv_safe_to_use_wformat_],
 165         [save_CFLAGS="$CFLAGS"
 166          dnl Use -Werror here instead of ${W_FAIL} so that we don't spew
 167          dnl conversion warnings to all the tarball folks
 168          CFLAGS="-Wformat -Werror -pedantic ${AM_CFLAGS} ${CFLAGS}"
 169          AC_COMPILE_IFELSE(
 170            [AC_LANG_PROGRAM([[
 171 #include <stdio.h>
 172 #include <stdint.h>
 173 #include <inttypes.h>
 174 void foo();
 175 void foo()
 176 {
 177   uint64_t test_u= 0;
 178   printf("This is a %" PRIu64 "test\n", test_u);
 179 }
 180            ]],[[
 181 foo();
 182            ]])],
 183            [ac_cv_safe_to_use_wformat_=yes],
 184            [ac_cv_safe_to_use_wformat_=no])
 185          CFLAGS="$save_CFLAGS"])
 186       AS_IF([test "$ac_cv_safe_to_use_wformat_" = "yes"],[
 187         BASE_WARNINGS="${BASE_WARNINGS} -Wformat -Wno-format-nonliteral -Wformat-security"
 188         BASE_WARNINGS_FULL="${BASE_WARNINGS_FULL} -Wformat=2 -Wno-format-nonliteral -Wformat-security"
 189         ],[
 190         BASE_WARNINGS="${BASE_WARNINGS} -Wno-format"
 191         BASE_WARNINGS_FULL="${BASE_WARNINGS_FULL} -Wno-format"
 192       ])
 193
 194
 195
 196       AC_CACHE_CHECK([whether it is safe to use -Wconversion],
 197         [ac_cv_safe_to_use_wconversion_],
 198         [save_CFLAGS="$CFLAGS"
 199          dnl Use -Werror here instead of ${W_FAIL} so that we don't spew
 200          dnl conversion warnings to all the tarball folks
 201          CFLAGS="-Wconversion -Werror -pedantic ${AM_CFLAGS} ${CFLAGS}"
 202          AC_COMPILE_IFELSE(
 203            [AC_LANG_PROGRAM([[
 204 #include <stdbool.h>
 205 void foo(bool a)
 206 {
 207   (void)a;
 208 }
 209            ]],[[
 210 foo(0);
 211            ]])],
 212            [ac_cv_safe_to_use_wconversion_=yes],
 213            [ac_cv_safe_to_use_wconversion_=no])
 214          CFLAGS="$save_CFLAGS"])
 215
 216       AS_IF([test "$ac_cv_safe_to_use_wconversion_" = "yes"],
 217         [W_CONVERSION="-Wconversion"
 218         AC_CACHE_CHECK([whether it is safe to use -Wconversion with htons],
 219           [ac_cv_safe_to_use_Wconversion_],
 220           [save_CFLAGS="$CFLAGS"
 221            dnl Use -Werror here instead of ${W_FAIL} so that we don't spew
 222            dnl conversion warnings to all the tarball folks
 223            CFLAGS="-Wconversion -Werror -pedantic ${AM_CFLAGS} ${CFLAGS}"
 224            AC_COMPILE_IFELSE(
 225              [AC_LANG_PROGRAM(
 226                [[
 227 #include <netinet/in.h>
 228                ]],[[
 229 uint16_t x= htons(80);
 230                ]])],
 231              [ac_cv_safe_to_use_Wconversion_=yes],
 232              [ac_cv_safe_to_use_Wconversion_=no])
 233            CFLAGS="$save_CFLAGS"])
 234
 235         AS_IF([test "$ac_cv_safe_to_use_Wconversion_" = "no"],
 236               [NO_CONVERSION="-Wno-conversion"])
 237       ])
 238
 239       CC_WARNINGS="${BASE_WARNINGS} -Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wmissing-declarations -Wcast-align -Wsign-compare ${CC_WARNINGS_FULL}"
 240       CXX_WARNINGS="${BASE_WARNINGS} -Woverloaded-virtual -Wnon-virtual-dtor -Wctor-dtor-privacy -Wno-long-long -Wsign-compare ${CXX_WARNINGS_FULL}"
 241
 242       AC_CACHE_CHECK([whether it is safe to use -Wmissing-declarations from C++],
 243         [ac_cv_safe_to_use_Wmissing_declarations_],
 244         [AC_LANG_PUSH(C++)
 245          save_CXXFLAGS="$CXXFLAGS"
 246          CXXFLAGS="-Werror -pedantic -Wmissing-declarations ${AM_CXXFLAGS}"
 247          AC_COMPILE_IFELSE([
 248            AC_LANG_PROGRAM(
 249            [[
 250 #include <stdio.h>
 251            ]], [[]])
 252         ],
 253         [ac_cv_safe_to_use_Wmissing_declarations_=yes],
 254         [ac_cv_safe_to_use_Wmissing_declarations_=no])
 255         CXXFLAGS="$save_CXXFLAGS"
 256         AC_LANG_POP()
 257       ])
 258       AS_IF([test "$ac_cv_safe_to_use_Wmissing_declarations_" = "yes"],
 259             [CXX_WARNINGS="${CXX_WARNINGS} -Wmissing-declarations"])
 260
 261       AC_CACHE_CHECK([whether it is safe to use -Wframe-larger-than],
 262         [ac_cv_safe_to_use_Wframe_larger_than_],
 263         [AC_LANG_PUSH(C++)
 264          save_CXXFLAGS="$CXXFLAGS"
 265          CXXFLAGS="-Werror -pedantic -Wframe-larger-than=32768 ${AM_CXXFLAGS}"
 266          AC_COMPILE_IFELSE([
 267            AC_LANG_PROGRAM(
 268            [[
 269 #include <stdio.h>
 270            ]], [[]])
 271         ],
 272         [ac_cv_safe_to_use_Wframe_larger_than_=yes],
 273         [ac_cv_safe_to_use_Wframe_larger_than_=no])
 274         CXXFLAGS="$save_CXXFLAGS"
 275         AC_LANG_POP()
 276       ])
 277       AS_IF([test "$ac_cv_safe_to_use_Wframe_larger_than_" = "yes"],
 278             [CXX_WARNINGS="${CXX_WARNINGS} -Wframe-larger-than=32768"])
 279
 280       AC_CACHE_CHECK([whether it is safe to use -Wredundant-decls from C++],
 281         [ac_cv_safe_to_use_Wredundant_decls_],
 282         [AC_LANG_PUSH(C++)
 283          save_CXXFLAGS="${CXXFLAGS}"
 284          CXXFLAGS="${W_FAIL} -pedantic -Wredundant-decls ${AM_CXXFLAGS}"
 285          AC_COMPILE_IFELSE(
 286            [AC_LANG_PROGRAM([
 287 template <typename E> struct C { void foo(); };
 288 template <typename E> void C<E>::foo() { }
 289 template <> void C<int>::foo();
 290             AC_INCLUDES_DEFAULT])],
 291             [ac_cv_safe_to_use_Wredundant_decls_=yes],
 292             [ac_cv_safe_to_use_Wredundant_decls_=no])
 293          CXXFLAGS="${save_CXXFLAGS}"
 294          AC_LANG_POP()])
 295       AS_IF([test "$ac_cv_safe_to_use_Wredundant_decls_" = "yes"],
 296             [CXX_WARNINGS="${CXX_WARNINGS} -Wredundant-decls"],
 297             [CXX_WARNINGS="${CXX_WARNINGS} -Wno-redundant-decls"])
 298
 299       AC_CACHE_CHECK([whether it is safe to use -Wattributes from C++],
 300         [ac_cv_safe_to_use_Wattributes_],
 301         [AC_LANG_PUSH(C++)
 302          save_CXXFLAGS="${CXXFLAGS}"
 303          CXXFLAGS="${W_FAIL} -pedantic -Wattributes -fvisibility=hidden ${AM_CXXFLAGS}"
 304          AC_COMPILE_IFELSE(
 305            [AC_LANG_PROGRAM([
 306 #include <google/protobuf/message.h>
 307 #include <google/protobuf/descriptor.h>
 308
 309
 310 const ::google::protobuf::EnumDescriptor* Table_TableOptions_RowType_descriptor();
 311 enum Table_TableOptions_RowType {
 312   Table_TableOptions_RowType_ROW_TYPE_DEFAULT = 0,
 313   Table_TableOptions_RowType_ROW_TYPE_FIXED = 1,
 314   Table_TableOptions_RowType_ROW_TYPE_DYNAMIC = 2,
 315   Table_TableOptions_RowType_ROW_TYPE_COMPRESSED = 3,
 316   Table_TableOptions_RowType_ROW_TYPE_REDUNDANT = 4,
 317   Table_TableOptions_RowType_ROW_TYPE_COMPACT = 5,
 318   Table_TableOptions_RowType_ROW_TYPE_PAGE = 6
 319 };
 320
 321 namespace google {
 322 namespace protobuf {
 323 template <>
 324 inline const EnumDescriptor* GetEnumDescriptor<Table_TableOptions_RowType>() {
 325   return Table_TableOptions_RowType_descriptor();
 326 }
 327 }
 328 }
 329             ])],
 330             [ac_cv_safe_to_use_Wattributes_=yes],
 331             [ac_cv_safe_to_use_Wattributes_=no])
 332           CXXFLAGS="${save_CXXFLAGS}"
 333           AC_LANG_POP()])
 334       AC_CACHE_CHECK([whether it is safe to use -Wno-attributes],
 335         [ac_cv_safe_to_use_Wno_attributes_],
 336         [save_CFLAGS="$CFLAGS"
 337          CFLAGS="${W_FAIL} -pedantic -Wno_attributes_ ${AM_CFLAGS} ${CFLAGS}"
 338          AC_COMPILE_IFELSE([
 339            AC_LANG_PROGRAM(
 340            [[
 341 #include <stdio.h>
 342            ]], [[]])
 343         ],
 344         [ac_cv_safe_to_use_Wno_attributes_=yes],
 345         [ac_cv_safe_to_use_Wno_attributes_=no])
 346       CFLAGS="$save_CFLAGS"])
 347
 348       dnl GCC 3.4 doesn't have -Wno-attributes, so we can't turn them off
 349       dnl by using that.
 350       AS_IF([test "$ac_cv_safe_to_use_Wattributes_" != "yes"],[
 351         AS_IF([test "$ac_cv_safe_to_use_Wno_attributes_" = "yes"],[
 352           CC_WARNINGS="${CC_WARNINGS} -Wno-attributes"
 353           NO_ATTRIBUTES="-Wno-attributes"])])
 354
 355
 356       NO_REDUNDANT_DECLS="-Wno-redundant-decls"
 357       dnl TODO: Figure out a better way to deal with this:
 358       PROTOSKIP_WARNINGS="-Wno-effc++ -Wno-shadow -Wno-missing-braces ${NO_ATTRIBUTES}"
 359       NO_WERROR="-Wno-error"
 360       PERMISSIVE_WARNINGS="-Wno-error -Wno-unused-function -fpermissive"
 361       PERMISSIVE_C_WARNINGS="-Wno-error -Wno-redundant-decls"
 362       AS_IF([test "$host_vendor" = "apple"],[
 363         BOOSTSKIP_WARNINGS="-Wno-uninitialized"
 364       ])
 365     ])
 366   ])
 367
 368   AS_IF([test "$SUNCC" = "yes"],[
 369
 370     AS_IF([test "$ac_profiling" = "yes"],
 371           [CC_PROFILING="-xinstrument=datarace"])
 372
 373     AS_IF([test "$ac_cv_warnings_as_errors" = "yes"],
 374           [W_FAIL="-errwarn=%all"])
 375
 376     AC_CACHE_CHECK([whether E_PASTE_RESULT_NOT_TOKEN is usable],
 377       [ac_cv_paste_result],
 378       [
 379         save_CFLAGS="${CFLAGS}"
 380         CFLAGS="-errwarn=%all -erroff=E_PASTE_RESULT_NOT_TOKEN ${CFLAGS}"
 381         AC_COMPILE_IFELSE(
 382           [AC_LANG_PROGRAM([
 383             AC_INCLUDES_DEFAULT
 384           ],[
 385             int x= 0;])],
 386           [ac_cv_paste_result=yes],
 387           [ac_cv_paste_result=no])
 388         CFLAGS="${save_CFLAGS}"
 389       ])
 390     AS_IF([test $ac_cv_paste_result = yes],
 391       [W_PASTE_RESULT=",E_PASTE_RESULT_NOT_TOKEN"])
 392
 393
 394     m4_if(PW_LESS_WARNINGS, [no],[
 395       CC_WARNINGS_FULL="-erroff=E_STATEMENT_NOT_REACHED,E_INTEGER_OVERFLOW_DETECTED${W_PASTE_RESULT}"
 396       CXX_WARNINGS_FULL="-erroff=inllargeuse"
 397     ],[
 398       CC_WARNINGS_FULL="-erroff=E_ATTRIBUTE_NOT_VAR,E_STATEMENT_NOT_REACHED"
 399       CXX_WARNINGS_FULL="-erroff=attrskipunsup,doubunder,reftotemp,inllargeuse,truncwarn1,signextwarn,inllargeint"
 400     ])
 401
 402     CC_WARNINGS="-v -errtags=yes ${W_FAIL} ${CC_WARNINGS_FULL}"
 403     CXX_WARNINGS="+w +w2 -xwe -xport64 -errtags=yes ${CXX_WARNINGS_FULL} ${W_FAIL}"
 404     PROTOSKIP_WARNINGS="-erroff=attrskipunsup,doubunder,reftotemp,wbadinitl,identexpected,inllargeuse,truncwarn1,signextwarn,partinit,notused,badargtype2w,wbadinit"
 405     BOOSTSKIP_WARNINGS="-erroff=attrskipunsup,doubunder,reftotemp,inllargeuse,truncwarn1,signextwarn,inllargeint,hidef,wvarhidenmem"
 406     PERMISSIVE_WARNINGS="-erroff=attrskipunsup,doubunder,reftotemp,inllargeuse,truncwarn1,signextwarn,inllargeint,hidef,wvarhidenmem,notused,badargtype2w,wunreachable"
 407     INNOBASE_SKIP_WARNINGS="-erroff=attrskipunsup,doubunder,reftotemp,wbadinitl,identexpected,inllargeuse,truncwarn1,signextwarn,partinit,notused,badargtype2w,wbadinit,wunreachable"
 408     NO_UNREACHED="-erroff=E_STATEMENT_NOT_REACHED"
 409     NO_WERROR="-errwarn=%none"
 410
 411   ])
 412
 413   AC_SUBST(NO_CONVERSION)
 414   AC_SUBST(NO_REDUNDANT_DECLS)
 415   AC_SUBST(NO_UNREACHED)
 416   AC_SUBST(NO_SHADOW)
 417   AC_SUBST(NO_STRICT_ALIASING)
 418   AC_SUBST(NO_EFF_CXX)
 419   AC_SUBST(NO_OLD_STYLE_CAST)
 420   AC_SUBST(PROTOSKIP_WARNINGS)
 421   AC_SUBST(INNOBASE_SKIP_WARNINGS)
 422   AC_SUBST(BOOSTSKIP_WARNINGS)
 423   AC_SUBST(PERMISSIVE_WARNINGS)
 424   AC_SUBST(PERMISSIVE_C_WARNINGS)
 425   AC_SUBST(NO_WERROR)
 426   AC_SUBST([GCOV_LIBS])
 427   AC_SUBST([SPHINX_WARNINGS])
 428   AC_SUBST([INTLTOOL_WARNINGS])
 429
 430 ])