+dnl Copyright (C) 2009 Sun Microsystems
+dnl This file is free software; Sun Microsystems
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl AC_PANDORA_WARNINGS([less-warnings|warnings-always-on])
+dnl less-warnings turn on a limited set of warnings
+dnl warnings-always-on always set warnings=error regardless of tarball/vc
+
+AC_DEFUN([PANDORA_WARNINGS],[
+ m4_define([PW_LESS_WARNINGS],[no])
+ m4_define([PW_WARN_ALWAYS_ON],[no])
+ m4_foreach_w([pw_arg],$@,[
+ m4_case(pw_arg,
+ [less-warnings],[
+ m4_undefine([PW_LESS_WARNINGS])
+ m4_define([PW_LESS_WARNINGS],[yes])
+ ],
+ [warnings-always-on],[
+ m4_undefine([PW_WARN_ALWAYS_ON])
+ m4_define([PW_WARN_ALWAYS_ON],[yes])
+ ])
+ ])
+
+ AC_REQUIRE([PANDORA_BUILDING_FROM_VC])
+ m4_if(PW_WARN_ALWAYS_ON, [yes],
+ [ac_cv_warnings_as_errors=yes],
+ AS_IF([test "$ac_cv_building_from_vc" = "yes"],
+ [ac_cv_warnings_as_errors=yes],
+ [ac_cv_warnings_as_errors=no]))
+
+ AC_ARG_ENABLE([profiling],
+ [AS_HELP_STRING([--enable-profiling],
+ [Toggle profiling @<:@default=off@:>@])],
+ [ac_profiling="$enableval"],
+ [ac_profiling="no"])
+
+ AC_ARG_ENABLE([coverage],
+ [AS_HELP_STRING([--enable-coverage],
+ [Toggle coverage @<:@default=off@:>@])],
+ [ac_coverage="$enableval"],
+ [ac_coverage="no"])
+
+ AS_IF([test "$GCC" = "yes"],[
+
+ AS_IF([test "$ac_profiling" = "yes"],[
+ CC_PROFILING="-pg"
+ save_LIBS="${LIBS}"
+ LIBS=""
+ AC_CHECK_LIB(c_p, read)
+ LIBC_P="${LIBS}"
+ LIBS="${save_LIBS}"
+ AC_SUBST(LIBC_P)
+ ],[
+ CC_PROFILING=" "
+ ])
+
+ AS_IF([test "$ac_coverage" = "yes"],
+ [CC_COVERAGE="-fprofile-arcs -ftest-coverage"])
+
+ AS_IF([test "$ac_cv_warnings_as_errors" = "yes"],
+ [W_FAIL="-Werror"])
+
+ AC_CACHE_CHECK([whether it is safe to use -fdiagnostics-show-option],
+ [ac_cv_safe_to_use_fdiagnostics_show_option_],
+ [save_CFLAGS="$CFLAGS"
+ CFLAGS="-fdiagnostics-show-option ${AM_CFLAGS}"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([],[])],
+ [ac_cv_safe_to_use_fdiagnostics_show_option_=yes],
+ [ac_cv_safe_to_use_fdiagnostics_show_option_=no])
+ CFLAGS="$save_CFLAGS"])
+
+ AS_IF([test "$ac_cv_safe_to_use_fdiagnostics_show_option_" = "yes"],
+ [
+ F_DIAGNOSTICS_SHOW_OPTION="-fdiagnostics-show-option"
+ ])
+
+ AC_CACHE_CHECK([whether it is safe to use -Wconversion],
+ [ac_cv_safe_to_use_wconversion_],
+ [save_CFLAGS="$CFLAGS"
+ CFLAGS="-Wconversion ${W_FAIL} -pedantic ${AM_CFLAGS}"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+#include <stdbool.h>
+void foo(bool a)
+{
+ (void)a;
+}
+ ]],[[
+foo(0);
+ ]])],
+ [ac_cv_safe_to_use_wconversion_=yes],
+ [ac_cv_safe_to_use_wconversion_=no])
+ CFLAGS="$save_CFLAGS"])
+
+ AS_IF([test "$ac_cv_safe_to_use_wconversion_" = "yes"],
+ [W_CONVERSION="-Wconversion"
+ AC_CACHE_CHECK([whether it is safe to use -Wconversion with htons],
+ [ac_cv_safe_to_use_Wconversion_],
+ [save_CFLAGS="$CFLAGS"
+ CFLAGS="-Wconversion ${W_FAIL} -pedantic ${AM_CFLAGS}"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#include <netinet/in.h>
+ ]],[[
+uint16_t x= htons(80);
+ ]])],
+ [ac_cv_safe_to_use_Wconversion_=yes],
+ [ac_cv_safe_to_use_Wconversion_=no])
+ CFLAGS="$save_CFLAGS"])
+
+ AS_IF([test "$ac_cv_safe_to_use_Wconversion_" = "no"],
+ [NO_CONVERSION="-Wno-conversion"])
+ ])
+
+ NO_STRICT_ALIASING="-fno-strict-aliasing -Wno-strict-aliasing"
+ NO_SHADOW="-Wno-shadow"
+
+ m4_if(PW_LESS_WARNINGS,[no],[
+ BASE_WARNINGS_FULL="-Wformat=2 ${W_CONVERSION} -Wstrict-aliasing"
+ CC_WARNINGS_FULL="-Wswitch-default -Wswitch-enum"
+ CXX_WARNINGS_FULL="-Weffc++ -Wold-style-cast"
+ ],[
+ BASE_WARNINGS_FULL="-Wformat ${NO_STRICT_ALIASING}"
+ ])
+
+ BASE_WARNINGS="${W_FAIL} -pedantic -Wall -Wextra -Wundef -Wshadow -Wstrict-aliasing ${F_DIAGNOSTICS_SHOW_OPTION} ${CFLAG_VISIBILITY} ${BASE_WARNINGS_FULL}"
+ CC_WARNINGS="${BASE_WARNINGS} -Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wmissing-declarations -Wcast-align ${CC_WARNINGS_FULL}"
+ CXX_WARNINGS="${BASE_WARNINGS} -Woverloaded-virtual -Wnon-virtual-dtor -Wctor-dtor-privacy -Wno-long-long ${CXX_WARNINGS_FULL}"
+
+ AC_CACHE_CHECK([whether it is safe to use -Wmissing-declarations from C++],
+ [ac_cv_safe_to_use_Wmissing_declarations_],
+ [AC_LANG_PUSH(C++)
+ save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="-Werror -pedantic -Wmissing-declarations ${AM_CXXFLAGS}"
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM(
+ [[
+#include <stdio.h>
+ ]], [[]])
+ ],
+ [ac_cv_safe_to_use_Wmissing_declarations_=yes],
+ [ac_cv_safe_to_use_Wmissing_declarations_=no])
+ CXXFLAGS="$save_CXXFLAGS"
+ AC_LANG_POP()
+ ])
+ AS_IF([test "$ac_cv_safe_to_use_Wmissing_declarations_" = "yes"],
+ [CXX_WARNINGS="${CXX_WARNINGS} -Wmissing-declarations"])
+
+ AC_CACHE_CHECK([whether it is safe to use -Wlogical-op],
+ [ac_cv_safe_to_use_Wlogical_op_],
+ [save_CFLAGS="$CFLAGS"
+ CFLAGS="${W_FAIL} -pedantic -Wlogical-op ${AM_CFLAGS}"
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM(
+ [[
+#include <stdio.h>
+ ]], [[]])
+ ],
+ [ac_cv_safe_to_use_Wlogical_op_=yes],
+ [ac_cv_safe_to_use_Wlogical_op_=no])
+ CFLAGS="$save_CFLAGS"])
+ AS_IF([test "$ac_cv_safe_to_use_Wlogical_op_" = "yes"],
+ [CC_WARNINGS="${CC_WARNINGS} -Wlogical-op"])
+
+ AC_CACHE_CHECK([whether it is safe to use -Wredundant-decls from C++],
+ [ac_cv_safe_to_use_Wredundant_decls_],
+ [AC_LANG_PUSH(C++)
+ save_CXXFLAGS="${CXXFLAGS}"
+ CXXFLAGS="${W_FAIL} -pedantic -Wredundant-decls ${AM_CXXFLAGS}"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([
+template <typename E> struct C { void foo(); };
+template <typename E> void C<E>::foo() { }
+template <> void C<int>::foo();
+ AC_INCLUDES_DEFAULT])],
+ [ac_cv_safe_to_use_Wredundant_decls_=yes],
+ [ac_cv_safe_to_use_Wredundant_decls_=no])
+ CXXFLAGS="${save_CXXFLAGS}"
+ AC_LANG_POP()])
+ AS_IF([test "$ac_cv_safe_to_use_Wredundant_decls_" = "yes"],
+ [CXX_WARNINGS="${CXX_WARNINGS} -Wredundant-decls"],
+ [CXX_WARNINGS="${CXX_WARNINGS} -Wno-redundant-decls"])
+
+ NO_REDUNDANT_DECLS="-Wno-redundant-decls"
+ PROTOSKIP_WARNINGS="-Wno-effc++ -Wno-shadow"
+
+ ])
+
+ AS_IF([test "$SUNCC" = "yes"],[
+
+ AS_IF([test "$ac_profiling" = "yes"],
+ [CC_PROFILING="-xinstrument=datarace"])
+
+ AS_IF([test "$ac_cv_warnings_as_errors" = "yes"],
+ [W_FAIL="-errwarn=%all"])
+
+ AC_CACHE_CHECK([whether E_PASTE_RESULT_NOT_TOKEN is usable],
+ [ac_cv_paste_result],
+ [
+ save_CFLAGS="${CFLAGS}"
+ CFLAGS="-errwarn=%all -erroff=E_PASTE_RESULT_NOT_TOKEN ${CFLAGS}"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([
+ AC_INCLUDES_DEFAULT
+ ],[
+ int x= 0;])],
+ [ac_cv_paste_result=yes],
+ [ac_cv_paste_result=no])
+ CFLAGS="${save_CFLAGS}"
+ ])
+ AS_IF([test $ac_cv_paste_result = yes],
+ [W_PASTE_RESULT=",E_PASTE_RESULT_NOT_TOKEN"])
+
+
+ m4_if(PW_LESS_WARNINGS, [no],[
+ CC_WARNINGS_FULL="-erroff=E_INTEGER_OVERFLOW_DETECTED${W_PASTE_RESULT}"
+ ],[
+ CC_WARNINGS_FULL="-erroff=E_ATTRIBUTE_NOT_VAR"
+ CXX_WARNINGS_FULL="-erroff=attrskipunsup,doubunder,reftotemp,inllargeuse,truncwarn1,signextwarn,inllargeint"
+ ])
+
+ CC_WARNINGS="-v -errtags=yes ${W_FAIL} ${CC_WARNINGS_FULL}"
+ CXX_WARNINGS="+w +w2 -xwe -xport64 -errtags=yes ${CXX_WARNINGS_FULL} ${W_FAIL}"
+ PROTOSKIP_WARNINGS="-erroff=attrskipunsup,doubunder,reftotemp,wbadinitl,identexpected,inllargeuse,truncwarn1,signextwarn"
+ NO_UNREACHED="-erroff=E_STATEMENT_NOT_REACHED"
+
+ ])
+
+ AC_SUBST(NO_CONVERSION)
+ AC_SUBST(NO_REDUNDANT_DECLS)
+ AC_SUBST(NO_UNREACHED)
+ AC_SUBST(NO_SHADOW)
+ AC_SUBST(NO_STRICT_ALIASING)
+ AC_SUBST(PROTOSKIP_WARNINGS)
+
+])