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.
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
10 dnl @TODO: remove less-warnings option as soon as Drizzle is clean enough to
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],$*,[
21 m4_undefine([PW_LESS_WARNINGS])
22 m4_define([PW_LESS_WARNINGS],[yes])
24 [warnings-always-on],[
25 m4_undefine([PW_WARN_ALWAYS_ON])
26 m4_define([PW_WARN_ALWAYS_ON],[yes])
30 AC_REQUIRE([PANDORA_BUILDING_FROM_VC])
31 m4_if(PW_WARN_ALWAYS_ON, [yes],
32 [ac_cv_warnings_as_errors=yes],
33 AS_IF([test "$ac_cv_building_from_vc" = "yes"],
34 [ac_cv_warnings_as_errors=yes],
35 [ac_cv_warnings_as_errors=no]))
37 AC_ARG_ENABLE([profiling],
38 [AS_HELP_STRING([--enable-profiling],
39 [Toggle profiling @<:@default=off@:>@])],
40 [ac_profiling="$enableval"],
43 AC_ARG_ENABLE([coverage],
44 [AS_HELP_STRING([--enable-coverage],
45 [Toggle coverage @<:@default=off@:>@])],
46 [ac_coverage="$enableval"],
49 AS_IF([test "$GCC" = "yes"],[
51 AS_IF([test "$ac_profiling" = "yes"],[
55 AC_CHECK_LIB(c_p, read)
63 AS_IF([test "$ac_coverage" = "yes"],
64 [CC_COVERAGE="-fprofile-arcs -ftest-coverage"])
66 AS_IF([test "$ac_cv_warnings_as_errors" = "yes"],
69 AC_CACHE_CHECK([whether it is safe to use -fdiagnostics-show-option],
70 [ac_cv_safe_to_use_fdiagnostics_show_option_],
71 [save_CFLAGS="$CFLAGS"
72 CFLAGS="-fdiagnostics-show-option ${AM_CFLAGS}"
74 [AC_LANG_PROGRAM([],[])],
75 [ac_cv_safe_to_use_fdiagnostics_show_option_=yes],
76 [ac_cv_safe_to_use_fdiagnostics_show_option_=no])
77 CFLAGS="$save_CFLAGS"])
79 AS_IF([test "$ac_cv_safe_to_use_fdiagnostics_show_option_" = "yes"],
81 F_DIAGNOSTICS_SHOW_OPTION="-fdiagnostics-show-option"
84 AC_CACHE_CHECK([whether it is safe to use -Wconversion],
85 [ac_cv_safe_to_use_wconversion_],
86 [save_CFLAGS="$CFLAGS"
87 dnl Use -Werror here instead of ${W_FAIL} so that we don't spew
88 dnl conversion warnings to all the tarball folks
89 CFLAGS="-Wconversion -Werror -pedantic ${AM_CFLAGS}"
100 [ac_cv_safe_to_use_wconversion_=yes],
101 [ac_cv_safe_to_use_wconversion_=no])
102 CFLAGS="$save_CFLAGS"])
104 AS_IF([test "$ac_cv_safe_to_use_wconversion_" = "yes"],
105 [W_CONVERSION="-Wconversion"
106 AC_CACHE_CHECK([whether it is safe to use -Wconversion with htons],
107 [ac_cv_safe_to_use_Wconversion_],
108 [save_CFLAGS="$CFLAGS"
109 dnl Use -Werror here instead of ${W_FAIL} so that we don't spew
110 dnl conversion warnings to all the tarball folks
111 CFLAGS="-Wconversion -Werror -pedantic ${AM_CFLAGS}"
115 #include <netinet/in.h>
117 uint16_t x= htons(80);
119 [ac_cv_safe_to_use_Wconversion_=yes],
120 [ac_cv_safe_to_use_Wconversion_=no])
121 CFLAGS="$save_CFLAGS"])
123 AS_IF([test "$ac_cv_safe_to_use_Wconversion_" = "no"],
124 [NO_CONVERSION="-Wno-conversion"])
127 NO_STRICT_ALIASING="-fno-strict-aliasing -Wno-strict-aliasing"
128 NO_SHADOW="-Wno-shadow"
130 m4_if(PW_LESS_WARNINGS,[no],[
131 BASE_WARNINGS_FULL="-Wformat=2 ${W_CONVERSION} -Wstrict-aliasing"
132 CC_WARNINGS_FULL="-Wswitch-default -Wswitch-enum"
133 CXX_WARNINGS_FULL="-Weffc++ -Wold-style-cast"
135 BASE_WARNINGS_FULL="-Wformat ${NO_STRICT_ALIASING}"
138 BASE_WARNINGS="${W_FAIL} -pedantic -Wall -Wextra -Wundef -Wshadow -Wstrict-aliasing ${F_DIAGNOSTICS_SHOW_OPTION} ${CFLAG_VISIBILITY} ${BASE_WARNINGS_FULL}"
139 CC_WARNINGS="${BASE_WARNINGS} -Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wmissing-declarations -Wcast-align ${CC_WARNINGS_FULL}"
140 CXX_WARNINGS="${BASE_WARNINGS} -Woverloaded-virtual -Wnon-virtual-dtor -Wctor-dtor-privacy -Wno-long-long ${CXX_WARNINGS_FULL}"
142 AC_CACHE_CHECK([whether it is safe to use -Wmissing-declarations from C++],
143 [ac_cv_safe_to_use_Wmissing_declarations_],
145 save_CXXFLAGS="$CXXFLAGS"
146 CXXFLAGS="-Werror -pedantic -Wmissing-declarations ${AM_CXXFLAGS}"
153 [ac_cv_safe_to_use_Wmissing_declarations_=yes],
154 [ac_cv_safe_to_use_Wmissing_declarations_=no])
155 CXXFLAGS="$save_CXXFLAGS"
158 AS_IF([test "$ac_cv_safe_to_use_Wmissing_declarations_" = "yes"],
159 [CXX_WARNINGS="${CXX_WARNINGS} -Wmissing-declarations"])
161 AC_CACHE_CHECK([whether it is safe to use -Wlogical-op],
162 [ac_cv_safe_to_use_Wlogical_op_],
163 [save_CFLAGS="$CFLAGS"
164 CFLAGS="${W_FAIL} -pedantic -Wlogical-op ${AM_CFLAGS}"
171 [ac_cv_safe_to_use_Wlogical_op_=yes],
172 [ac_cv_safe_to_use_Wlogical_op_=no])
173 CFLAGS="$save_CFLAGS"])
174 AS_IF([test "$ac_cv_safe_to_use_Wlogical_op_" = "yes"],
175 [CC_WARNINGS="${CC_WARNINGS} -Wlogical-op"])
177 AC_CACHE_CHECK([whether it is safe to use -Wredundant-decls from C++],
178 [ac_cv_safe_to_use_Wredundant_decls_],
180 save_CXXFLAGS="${CXXFLAGS}"
181 CXXFLAGS="${W_FAIL} -pedantic -Wredundant-decls ${AM_CXXFLAGS}"
184 template <typename E> struct C { void foo(); };
185 template <typename E> void C<E>::foo() { }
186 template <> void C<int>::foo();
187 AC_INCLUDES_DEFAULT])],
188 [ac_cv_safe_to_use_Wredundant_decls_=yes],
189 [ac_cv_safe_to_use_Wredundant_decls_=no])
190 CXXFLAGS="${save_CXXFLAGS}"
192 AS_IF([test "$ac_cv_safe_to_use_Wredundant_decls_" = "yes"],
193 [CXX_WARNINGS="${CXX_WARNINGS} -Wredundant-decls"],
194 [CXX_WARNINGS="${CXX_WARNINGS} -Wno-redundant-decls"])
196 NO_REDUNDANT_DECLS="-Wno-redundant-decls"
197 PROTOSKIP_WARNINGS="-Wno-effc++ -Wno-shadow"
201 AS_IF([test "$SUNCC" = "yes"],[
203 AS_IF([test "$ac_profiling" = "yes"],
204 [CC_PROFILING="-xinstrument=datarace"])
206 AS_IF([test "$ac_cv_warnings_as_errors" = "yes"],
207 [W_FAIL="-errwarn=%all"])
209 AC_CACHE_CHECK([whether E_PASTE_RESULT_NOT_TOKEN is usable],
210 [ac_cv_paste_result],
212 save_CFLAGS="${CFLAGS}"
213 CFLAGS="-errwarn=%all -erroff=E_PASTE_RESULT_NOT_TOKEN ${CFLAGS}"
219 [ac_cv_paste_result=yes],
220 [ac_cv_paste_result=no])
221 CFLAGS="${save_CFLAGS}"
223 AS_IF([test $ac_cv_paste_result = yes],
224 [W_PASTE_RESULT=",E_PASTE_RESULT_NOT_TOKEN"])
227 m4_if(PW_LESS_WARNINGS, [no],[
228 CC_WARNINGS_FULL="-erroff=E_INTEGER_OVERFLOW_DETECTED${W_PASTE_RESULT}"
230 CC_WARNINGS_FULL="-erroff=E_ATTRIBUTE_NOT_VAR"
231 CXX_WARNINGS_FULL="-erroff=attrskipunsup,doubunder,reftotemp,inllargeuse,truncwarn1,signextwarn,inllargeint"
234 CC_WARNINGS="-v -errtags=yes ${W_FAIL} ${CC_WARNINGS_FULL}"
235 CXX_WARNINGS="+w +w2 -xwe -xport64 -errtags=yes ${CXX_WARNINGS_FULL} ${W_FAIL}"
236 PROTOSKIP_WARNINGS="-erroff=attrskipunsup,doubunder,reftotemp,wbadinitl,identexpected,inllargeuse,truncwarn1,signextwarn"
237 NO_UNREACHED="-erroff=E_STATEMENT_NOT_REACHED"
241 AC_SUBST(NO_CONVERSION)
242 AC_SUBST(NO_REDUNDANT_DECLS)
243 AC_SUBST(NO_UNREACHED)
245 AC_SUBST(NO_STRICT_ALIASING)
246 AC_SUBST(PROTOSKIP_WARNINGS)