## AC_ARG_WARNINGS()

##

## Provide the --enable-warnings configure argument, set to 'minimum'

## by default.

##

AC_DEFUN([AC_ARG_WARNINGS],

[

  AC_ARG_ENABLE([warnings],

      [  --enable-warnings=[[none|minimum|maximum|hardcore]]

                          Control compiler pickyness.  [[default=maximum]]],

      [gtkmm_enable_warnings="$enableval"],

      gtkmm_enable_warnings="maximum")

  AC_MSG_CHECKING([for compiler warning flags to use])

  gtkmm_warning_flags=''

  # -W is now known as -Wextra, but that's not known by gcc 2 or 3

  case "$gtkmm_enable_warnings" in

    none|no)     gtkmm_warning_flags='';;

    minimum|yes) gtkmm_warning_flags='-Wall -Wno-unused-parameter';;

    maximum)     gtkmm_warning_flags='-W -Wall';;

    hardcore)    gtkmm_warning_flags='-W -Wall -Werror';;

  esac

  gtkmm_use_flags=''

  if test "x$gtkmm_warning_flags" != "x"

  then

    echo 'int foo() { return 0; }' > conftest.cc

    for flag in $gtkmm_warning_flags

    do

      # Test whether the compiler accepts the flag.  GCC doesn't bail

      # out when given an unsupported flag but prints a warning, so

      # check the compiler output instead.

      gtkmm_cxx_out="`$CXX $flag -c conftest.cc 2>&1`"

      rm -f conftest.$OBJEXT

      test "x${gtkmm_cxx_out}" = "x" && \

        gtkmm_use_flags="${gtkmm_use_flags:+$gtkmm_use_flags }$flag"

    done

    rm -f conftest.cc

    gtkmm_cxx_out=''

  fi

  if test "x$gtkmm_use_flags" != "x"

  then

    for flag in $gtkmm_use_flags

    do

      case " $CXXFLAGS " in

        *" $flag "*) ;; # don't add flags twice

        *)           CXXFLAGS="${CXXFLAGS:+$CXXFLAGS }$flag";;

      esac

    done

  else

    gtkmm_use_flags='none'

  fi

  AC_MSG_RESULT([$gtkmm_use_flags])

])

AC_DEFUN([AC_ARG_DEBUG],

[

	AC_MSG_CHECKING([for debug flags])

	AC_ARG_ENABLE(debug,[  --enable-debug           Build in debugging mode],[

		debug=$enableval

	],[

		debug="no"

	])

	debug_flags=''

	case "$debug" in

		yes)

			debug_flags="-D_DEBUG -g -O0"

			BIGOBJ_FLAGS=""

			($CC --version | grep -q mingw) && BIGOBJ_FLAGS="-Wa,-mbig-obj"

			CXXFLAGS="`echo $CXXFLAGS | sed s:-O.::` $debug_flags -fno-inline $BIGOBJ_FLAGS"

			CFLAGS="`echo $CFLAGS | sed s:-O.::` $debug_flags"

		;;

		no|*)

			debug_flags="-DNDEBUG"

			CXXFLAGS="`echo $CXXFLAGS | sed 's:-g[[a-z-]]*\s::g' | sed 's:-g[[a-z-]]*$::'` $debug_flags"

			CFLAGS="`echo $CFLAGS | sed 's:-g[[a-z-]]*\s::g' | sed 's:-g[[a-z-]]*$::'` $debug_flags"

		;;

	esac

	AC_MSG_RESULT([$debug_flags])

])

## Optimisation level 2 in g++ 4.1 or g++ 4.2 breaks composition loading in the vector parsing function in loadcanvas.cpp (1509627)

AC_DEFUN([AC_ARG_OPTIMIZATION],

[

	AC_MSG_CHECKING([for optimization flags])

	AC_ARG_ENABLE(optimization,[  --enable-optimization=[[0,1,2,3,4]] Select optimization level (default=2)],[

		optimization=$enableval

	],[

		optimization="2"

	])

	optimization_flags=''

	case "$optimization" in

		0|no)	optimization_flags="-O0";;

		1) 		optimization_flags="-O1";;

		2|yes)	optimization_flags="-O2";;

		pass1)	optimization_flags="-O2 -fprofile-arcs";;

		pass2)	optimization_flags="-O2 -fbranch-probabilities";;

		3) 		optimization_flags="-O3";;

		*) 		optimization_flags="-O4";;

	esac

	CXXFLAGS="`echo $CXXFLAGS | sed 's:-O.::g'` $optimization_flags"

	CFLAGS="`echo $CFLAGS | sed 's:-O.::g'` $optimization_flags"

	AC_MSG_RESULT([$optimization_flags])	

])

AC_DEFUN([AC_ARG_PROFILE_ARCS],

[

	AC_MSG_CHECKING([for arc profiling])

	AC_ARG_ENABLE(profile-arcs,[  --enable-profile-arcs      Enable arc profiling],[

		profile_arcs=$enableval

	],[

		profile_arcs=no

	])

	if test $profile_arcs = "yes" ; then {

		CXXFLAGS="$CXXFLAGS -fprofile-arcs";

		CFLAGS="$CFLAGS -fprofile-arcs";

	} ; fi

	AC_MSG_RESULT([$profile_arcs])	

])

AC_DEFUN([AC_ARG_BRANCH_PROBABILITIES],

[

	AC_MSG_CHECKING([for branch-probabilities])

	AC_ARG_ENABLE(branch-probabilities,[  --enable-branch-probabilities      Enable branch-probabilities],[

		branch_probabilities=$enableval

	],[

		branch_probabilities=no

	])

	if test $branch_probabilities = "yes" ; then {

		CXXFLAGS="$CXXFLAGS -fbranch-probabilities";

		CFLAGS="$CFLAGS -fbranch-probabilities";

	} ; fi

	AC_MSG_RESULT([$branch_probabilities])	

])

AC_DEFUN([AC_ARG_PROFILING],

[

	AC_MSG_CHECKING([for profiling])

	AC_ARG_ENABLE(profiling,[  --enable-profiling      Enable profiling using gprof],[

		profiling=$enableval

	],[

		profiling=no

	])

	if test $profiling = "yes" ; then {

		CFLAGS="$CFLAGS -pg";

		CXXFLAGS="$CXXFLAGS -pg";

		LDFLAGS="$LDFLAGS -pg";

		LIBS="$LIBS";

	} ; fi

	AC_MSG_RESULT([$profiling])	

])

MINGW_FLAGS="-mno-cygwin"

AC_DEFUN([AC_WIN32_QUIRKS],

[

case "$host" in

  *mingw*)

    AC_MSG_CHECKING([the flavor of the compiler])

    if ( $CC --version | grep -q mingw ) ; then {

        AC_MSG_RESULT([compiler is mingw special])

        LIBTOOL_PATCH_SED="

            s/dir=\"\$absdir\"/dir=\`cygpath -d -m \"\$absdir\"\`/;

            s/absdir=\`cd \"\$dir\" && pwd\`/absdir=\`cygpath -d -m \"\$dir\"\`/;

            s/# We need an absolute path/dir=\`cygpath -d -m \"\$dir\"\` # We need an absolute path/;

            s- /usr/lib- C:/mingw/lib-g;

            s-\"/lib -\"C:/mingw/lib -g;

            s- /lib/ - -g;

        ";

        sys_lib_dlsearch_path_spec="C:/mingw/lib"

        ac_default_prefix=`cygpath -d -m "$ac_default_prefix"`;

    } else {

    AC_MSG_RESULT([compiler is cygwin stock, adding -mno-cygwin])

    CPP="$CPP $MINGW_FLAGS"

    CC="$CC $MINGW_FLAGS"

    CXX="$CXX $MINGW_FLAGS -L/usr/$host/lib -I/usr/include/c++/3.3.3/$host"

    CXXCPP="$CXXCPP $MINGW_FLAGS"

} ; fi

    LTCC="gcc"

    CXXFLAGS="$CXXFLAGS -Wno-cpp -LC:/GTK/lib"

    CFLAGS="$CFLAGS -LC:/GTK/lib"

    LDFLAGS="$LDFLAGS -lole32 -Wl,-no-undefined -Wl,--export-all-symbols -Wl,--subsystem=console -Wl,--enable-runtime-pseudo-reloc" 

dnl    LDFLAGS="$LDFLAGS -lole32 -Wl,-no-undefined -Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--subsystem=console -Wl,--enable-runtime-pseudo-reloc"

    ;;

  *cygwin*)

    LDFLAGS="$LDFLAGS -lole32 -Wl,-no-undefined -Wl,--export-all-symbols"

dnl    LDFLAGS="$LDFLAGS -lole32 -Wl,-no-undefined -Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--subsystem=console"

    CXXFLAGS="$CXXFLAGS -I/target/include"

    CFLAGS="$CFLAGS -I/target/include"

    ;;

  powerpc-apple*)

    echo Adding mac-specific optimization flags. . .

    CXXFLAGS="$CXXFLAGS $G5OPTFLAGS"

    ;;

esac

])