Only prefer clang over gcc on BSD systems.
This commit is contained in:
Todd C. Miller
545
configure
vendored
545
configure
vendored
@@ -3182,7 +3182,9 @@ RTLD_PRELOAD_DEFAULT=
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ac_ext=c
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case "$host" in
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*-*-*bsd*|*-*-darwin*)
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ac_ext=c
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ac_cpp='$CPP $CPPFLAGS'
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ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
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ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
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@@ -3778,7 +3780,548 @@ ac_cpp='$CPP $CPPFLAGS'
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ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
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ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
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ac_compiler_gnu=$ac_cv_c_compiler_gnu
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;;
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*)
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ac_ext=c
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ac_cpp='$CPP $CPPFLAGS'
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ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
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ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
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ac_compiler_gnu=$ac_cv_c_compiler_gnu
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if test -n "$ac_tool_prefix"; then
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# Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
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set dummy ${ac_tool_prefix}gcc; ac_word=$2
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
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$as_echo_n "checking for $ac_word... " >&6; }
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if ${ac_cv_prog_CC+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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if test -n "$CC"; then
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ac_cv_prog_CC="$CC" # Let the user override the test.
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else
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as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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for as_dir in $PATH
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do
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IFS=$as_save_IFS
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test -z "$as_dir" && as_dir=.
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for ac_exec_ext in '' $ac_executable_extensions; do
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if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
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ac_cv_prog_CC="${ac_tool_prefix}gcc"
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$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
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break 2
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fi
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done
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done
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IFS=$as_save_IFS
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fi
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fi
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CC=$ac_cv_prog_CC
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if test -n "$CC"; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
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$as_echo "$CC" >&6; }
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else
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
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$as_echo "no" >&6; }
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fi
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fi
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if test -z "$ac_cv_prog_CC"; then
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ac_ct_CC=$CC
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# Extract the first word of "gcc", so it can be a program name with args.
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set dummy gcc; ac_word=$2
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
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$as_echo_n "checking for $ac_word... " >&6; }
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if ${ac_cv_prog_ac_ct_CC+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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if test -n "$ac_ct_CC"; then
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ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
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else
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as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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for as_dir in $PATH
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do
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IFS=$as_save_IFS
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test -z "$as_dir" && as_dir=.
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for ac_exec_ext in '' $ac_executable_extensions; do
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if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
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ac_cv_prog_ac_ct_CC="gcc"
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$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
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break 2
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fi
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done
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done
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IFS=$as_save_IFS
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fi
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fi
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ac_ct_CC=$ac_cv_prog_ac_ct_CC
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if test -n "$ac_ct_CC"; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
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$as_echo "$ac_ct_CC" >&6; }
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else
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
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$as_echo "no" >&6; }
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fi
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if test "x$ac_ct_CC" = x; then
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CC=""
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else
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case $cross_compiling:$ac_tool_warned in
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yes:)
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{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
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$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
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ac_tool_warned=yes ;;
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esac
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CC=$ac_ct_CC
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fi
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else
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CC="$ac_cv_prog_CC"
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fi
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if test -z "$CC"; then
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if test -n "$ac_tool_prefix"; then
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# Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
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set dummy ${ac_tool_prefix}cc; ac_word=$2
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
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$as_echo_n "checking for $ac_word... " >&6; }
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if ${ac_cv_prog_CC+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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if test -n "$CC"; then
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ac_cv_prog_CC="$CC" # Let the user override the test.
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else
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as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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for as_dir in $PATH
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do
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IFS=$as_save_IFS
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test -z "$as_dir" && as_dir=.
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for ac_exec_ext in '' $ac_executable_extensions; do
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if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
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ac_cv_prog_CC="${ac_tool_prefix}cc"
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$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
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break 2
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fi
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done
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done
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IFS=$as_save_IFS
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fi
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fi
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CC=$ac_cv_prog_CC
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if test -n "$CC"; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
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$as_echo "$CC" >&6; }
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else
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
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$as_echo "no" >&6; }
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fi
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fi
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fi
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if test -z "$CC"; then
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# Extract the first word of "cc", so it can be a program name with args.
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set dummy cc; ac_word=$2
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
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$as_echo_n "checking for $ac_word... " >&6; }
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if ${ac_cv_prog_CC+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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if test -n "$CC"; then
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ac_cv_prog_CC="$CC" # Let the user override the test.
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else
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ac_prog_rejected=no
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as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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for as_dir in $PATH
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do
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IFS=$as_save_IFS
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test -z "$as_dir" && as_dir=.
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for ac_exec_ext in '' $ac_executable_extensions; do
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if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
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if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
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ac_prog_rejected=yes
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continue
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fi
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ac_cv_prog_CC="cc"
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$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
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break 2
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fi
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done
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done
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IFS=$as_save_IFS
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if test $ac_prog_rejected = yes; then
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# We found a bogon in the path, so make sure we never use it.
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set dummy $ac_cv_prog_CC
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shift
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if test $# != 0; then
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# We chose a different compiler from the bogus one.
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# However, it has the same basename, so the bogon will be chosen
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# first if we set CC to just the basename; use the full file name.
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shift
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ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
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fi
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fi
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fi
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fi
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CC=$ac_cv_prog_CC
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if test -n "$CC"; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
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$as_echo "$CC" >&6; }
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else
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
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$as_echo "no" >&6; }
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fi
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fi
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if test -z "$CC"; then
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if test -n "$ac_tool_prefix"; then
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for ac_prog in cl.exe
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do
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# Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
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set dummy $ac_tool_prefix$ac_prog; ac_word=$2
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
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$as_echo_n "checking for $ac_word... " >&6; }
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if ${ac_cv_prog_CC+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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if test -n "$CC"; then
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ac_cv_prog_CC="$CC" # Let the user override the test.
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else
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as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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for as_dir in $PATH
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do
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IFS=$as_save_IFS
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test -z "$as_dir" && as_dir=.
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for ac_exec_ext in '' $ac_executable_extensions; do
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if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
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ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
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$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
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break 2
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fi
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done
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done
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IFS=$as_save_IFS
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fi
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fi
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CC=$ac_cv_prog_CC
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if test -n "$CC"; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
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$as_echo "$CC" >&6; }
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else
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
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$as_echo "no" >&6; }
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fi
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test -n "$CC" && break
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done
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fi
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if test -z "$CC"; then
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ac_ct_CC=$CC
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for ac_prog in cl.exe
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do
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# Extract the first word of "$ac_prog", so it can be a program name with args.
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set dummy $ac_prog; ac_word=$2
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
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$as_echo_n "checking for $ac_word... " >&6; }
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if ${ac_cv_prog_ac_ct_CC+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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if test -n "$ac_ct_CC"; then
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ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
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else
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as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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for as_dir in $PATH
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do
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IFS=$as_save_IFS
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test -z "$as_dir" && as_dir=.
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for ac_exec_ext in '' $ac_executable_extensions; do
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if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
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ac_cv_prog_ac_ct_CC="$ac_prog"
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$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
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break 2
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fi
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done
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done
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IFS=$as_save_IFS
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fi
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fi
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ac_ct_CC=$ac_cv_prog_ac_ct_CC
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if test -n "$ac_ct_CC"; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
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$as_echo "$ac_ct_CC" >&6; }
|
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else
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
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$as_echo "no" >&6; }
|
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fi
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test -n "$ac_ct_CC" && break
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done
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if test "x$ac_ct_CC" = x; then
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CC=""
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else
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case $cross_compiling:$ac_tool_warned in
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yes:)
|
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{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
|
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$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
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ac_tool_warned=yes ;;
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esac
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CC=$ac_ct_CC
|
||||
fi
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fi
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||||
|
||||
fi
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||||
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test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
|
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$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
|
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as_fn_error $? "no acceptable C compiler found in \$PATH
|
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See \`config.log' for more details" "$LINENO" 5; }
|
||||
|
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# Provide some information about the compiler.
|
||||
$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
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set X $ac_compile
|
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ac_compiler=$2
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for ac_option in --version -v -V -qversion; do
|
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{ { ac_try="$ac_compiler $ac_option >&5"
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||||
case "(($ac_try" in
|
||||
*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
|
||||
*) ac_try_echo=$ac_try;;
|
||||
esac
|
||||
eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
|
||||
$as_echo "$ac_try_echo"; } >&5
|
||||
(eval "$ac_compiler $ac_option >&5") 2>conftest.err
|
||||
ac_status=$?
|
||||
if test -s conftest.err; then
|
||||
sed '10a\
|
||||
... rest of stderr output deleted ...
|
||||
10q' conftest.err >conftest.er1
|
||||
cat conftest.er1 >&5
|
||||
fi
|
||||
rm -f conftest.er1 conftest.err
|
||||
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
|
||||
test $ac_status = 0; }
|
||||
done
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
|
||||
$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
|
||||
if ${ac_cv_c_compiler_gnu+:} false; then :
|
||||
$as_echo_n "(cached) " >&6
|
||||
else
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
|
||||
int
|
||||
main ()
|
||||
{
|
||||
#ifndef __GNUC__
|
||||
choke me
|
||||
#endif
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
ac_compiler_gnu=yes
|
||||
else
|
||||
ac_compiler_gnu=no
|
||||
fi
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
ac_cv_c_compiler_gnu=$ac_compiler_gnu
|
||||
|
||||
fi
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
|
||||
$as_echo "$ac_cv_c_compiler_gnu" >&6; }
|
||||
if test $ac_compiler_gnu = yes; then
|
||||
GCC=yes
|
||||
else
|
||||
GCC=
|
||||
fi
|
||||
ac_test_CFLAGS=${CFLAGS+set}
|
||||
ac_save_CFLAGS=$CFLAGS
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
|
||||
$as_echo_n "checking whether $CC accepts -g... " >&6; }
|
||||
if ${ac_cv_prog_cc_g+:} false; then :
|
||||
$as_echo_n "(cached) " >&6
|
||||
else
|
||||
ac_save_c_werror_flag=$ac_c_werror_flag
|
||||
ac_c_werror_flag=yes
|
||||
ac_cv_prog_cc_g=no
|
||||
CFLAGS="-g"
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
|
||||
int
|
||||
main ()
|
||||
{
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
ac_cv_prog_cc_g=yes
|
||||
else
|
||||
CFLAGS=""
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
|
||||
int
|
||||
main ()
|
||||
{
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
|
||||
else
|
||||
ac_c_werror_flag=$ac_save_c_werror_flag
|
||||
CFLAGS="-g"
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
|
||||
int
|
||||
main ()
|
||||
{
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
ac_cv_prog_cc_g=yes
|
||||
fi
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
fi
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
fi
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
ac_c_werror_flag=$ac_save_c_werror_flag
|
||||
fi
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
|
||||
$as_echo "$ac_cv_prog_cc_g" >&6; }
|
||||
if test "$ac_test_CFLAGS" = set; then
|
||||
CFLAGS=$ac_save_CFLAGS
|
||||
elif test $ac_cv_prog_cc_g = yes; then
|
||||
if test "$GCC" = yes; then
|
||||
CFLAGS="-g -O2"
|
||||
else
|
||||
CFLAGS="-g"
|
||||
fi
|
||||
else
|
||||
if test "$GCC" = yes; then
|
||||
CFLAGS="-O2"
|
||||
else
|
||||
CFLAGS=
|
||||
fi
|
||||
fi
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
|
||||
$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
|
||||
if ${ac_cv_prog_cc_c89+:} false; then :
|
||||
$as_echo_n "(cached) " >&6
|
||||
else
|
||||
ac_cv_prog_cc_c89=no
|
||||
ac_save_CC=$CC
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
#include <stdarg.h>
|
||||
#include <stdio.h>
|
||||
struct stat;
|
||||
/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */
|
||||
struct buf { int x; };
|
||||
FILE * (*rcsopen) (struct buf *, struct stat *, int);
|
||||
static char *e (p, i)
|
||||
char **p;
|
||||
int i;
|
||||
{
|
||||
return p[i];
|
||||
}
|
||||
static char *f (char * (*g) (char **, int), char **p, ...)
|
||||
{
|
||||
char *s;
|
||||
va_list v;
|
||||
va_start (v,p);
|
||||
s = g (p, va_arg (v,int));
|
||||
va_end (v);
|
||||
return s;
|
||||
}
|
||||
|
||||
/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has
|
||||
function prototypes and stuff, but not '\xHH' hex character constants.
|
||||
These don't provoke an error unfortunately, instead are silently treated
|
||||
as 'x'. The following induces an error, until -std is added to get
|
||||
proper ANSI mode. Curiously '\x00'!='x' always comes out true, for an
|
||||
array size at least. It's necessary to write '\x00'==0 to get something
|
||||
that's true only with -std. */
|
||||
int osf4_cc_array ['\x00' == 0 ? 1 : -1];
|
||||
|
||||
/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
|
||||
inside strings and character constants. */
|
||||
#define FOO(x) 'x'
|
||||
int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
|
||||
|
||||
int test (int i, double x);
|
||||
struct s1 {int (*f) (int a);};
|
||||
struct s2 {int (*f) (double a);};
|
||||
int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
|
||||
int argc;
|
||||
char **argv;
|
||||
int
|
||||
main ()
|
||||
{
|
||||
return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1];
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
|
||||
-Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
|
||||
do
|
||||
CC="$ac_save_CC $ac_arg"
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
ac_cv_prog_cc_c89=$ac_arg
|
||||
fi
|
||||
rm -f core conftest.err conftest.$ac_objext
|
||||
test "x$ac_cv_prog_cc_c89" != "xno" && break
|
||||
done
|
||||
rm -f conftest.$ac_ext
|
||||
CC=$ac_save_CC
|
||||
|
||||
fi
|
||||
# AC_CACHE_VAL
|
||||
case "x$ac_cv_prog_cc_c89" in
|
||||
x)
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
|
||||
$as_echo "none needed" >&6; } ;;
|
||||
xno)
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
|
||||
$as_echo "unsupported" >&6; } ;;
|
||||
*)
|
||||
CC="$CC $ac_cv_prog_cc_c89"
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
|
||||
$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
|
||||
esac
|
||||
if test "x$ac_cv_prog_cc_c89" != xno; then :
|
||||
|
||||
fi
|
||||
|
||||
ac_ext=c
|
||||
ac_cpp='$CPP $CPPFLAGS'
|
||||
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
|
||||
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
|
||||
ac_compiler_gnu=$ac_cv_c_compiler_gnu
|
||||
;;
|
||||
esac
|
||||
|
||||
ac_ext=c
|
||||
ac_cpp='$CPP $CPPFLAGS'
|
||||
|
||||
Reference in New Issue
Block a user