#along with GCC; see the file COPYING3. If not see
#<http://www.gnu.org/licenses/>.
-# ACX_PROG_CC_WARNING_OPTS(WARNINGS, [VARIABLE = WARN_CFLAGS)
+# ACX_PROG_CC_WARNING_OPTS(WARNINGS, [VARIABLE = WARN_CFLAGS])
# Sets @VARIABLE@ to the subset of the given options which the
# compiler accepts.
AC_DEFUN([ACX_PROG_CC_WARNING_OPTS],
[AC_REQUIRE([AC_PROG_CC])dnl
+AC_LANG_PUSH(C)
m4_pushdef([acx_Var], [m4_default([$2], [WARN_CFLAGS])])dnl
AC_SUBST(acx_Var)dnl
m4_expand_once([acx_Var=
done
CFLAGS="$save_CFLAGS"
m4_popdef([acx_Var])dnl
+AC_LANG_POP(C)
])# ACX_PROG_CC_WARNING_OPTS
# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(WARNINGS, [VARIABLE = WARN_PEDANTIC])
# and accepts all of those options simultaneously, otherwise to nothing.
AC_DEFUN([ACX_PROG_CC_WARNING_ALMOST_PEDANTIC],
[AC_REQUIRE([AC_PROG_CC])dnl
+AC_LANG_PUSH(C)
m4_pushdef([acx_Var], [m4_default([$2], [WARN_PEDANTIC])])dnl
AC_SUBST(acx_Var)dnl
m4_expand_once([acx_Var=
AS_VAR_POPDEF([acx_Pedantic])dnl
m4_popdef([acx_Woptions])dnl
m4_popdef([acx_Var])dnl
+AC_LANG_POP(C)
])# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC
# ACX_PROG_CC_WARNINGS_ARE_ERRORS([x.y.z], [VARIABLE = WERROR])
# appeared on the configure command line.
AC_DEFUN([ACX_PROG_CC_WARNINGS_ARE_ERRORS],
[AC_REQUIRE([AC_PROG_CC])dnl
+AC_LANG_PUSH(C)
m4_pushdef([acx_Var], [m4_default([$2], [WERROR])])dnl
AC_SUBST(acx_Var)dnl
m4_expand_once([acx_Var=
[acx_Var="$acx_Var${acx_Var:+ }-Werror"])
AS_VAR_POPDEF([acx_GCCvers])])
m4_popdef([acx_Var])dnl
+AC_LANG_POP(C)
])# ACX_PROG_CC_WARNINGS_ARE_ERRORS
+
+# ACX_PROG_CXX_WARNING_OPTS(WARNINGS, [VARIABLE = WARN_CXXFLAGS])
+# Sets @VARIABLE@ to the subset of the given options which the
+# compiler accepts.
+AC_DEFUN([ACX_PROG_CXX_WARNING_OPTS],
+[AC_REQUIRE([AC_PROG_CXX])dnl
+AC_LANG_PUSH(C++)
+m4_pushdef([acx_Var], [m4_default([$2], [WARN_CXXFLAGS])])dnl
+AC_SUBST(acx_Var)dnl
+m4_expand_once([acx_Var=
+],m4_quote(acx_Var=))dnl
+save_CXXFLAGS="$CXXFLAGS"
+for real_option in $1; do
+ # Do the check with the no- prefix removed since gcc silently
+ # accepts any -Wno-* option on purpose
+ case $real_option in
+ -Wno-*) option=-W`expr x$real_option : 'x-Wno-\(.*\)'` ;;
+ *) option=$real_option ;;
+ esac
+ AS_VAR_PUSHDEF([acx_Woption], [acx_cv_prog_cc_warning_$option])
+ AC_CACHE_CHECK([whether $CXX supports $option], acx_Woption,
+ [CXXFLAGS="$option"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
+ [AS_VAR_SET(acx_Woption, yes)],
+ [AS_VAR_SET(acx_Woption, no)])
+ ])
+ AS_IF([test AS_VAR_GET(acx_Woption) = yes],
+ [acx_Var="$acx_Var${acx_Var:+ }$real_option"])
+ AS_VAR_POPDEF([acx_Woption])dnl
+done
+CXXFLAGS="$save_CXXFLAGS"
+m4_popdef([acx_Var])dnl
+AC_LANG_POP(C++)
+])# ACX_PROG_CXX_WARNING_OPTS
+
+# ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(WARNINGS, [VARIABLE = WARN_PEDANTIC])
+# Append to VARIABLE "-pedantic" + the argument, if the compiler is G++
+# and accepts all of those options simultaneously, otherwise to nothing.
+AC_DEFUN([ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC],
+[AC_REQUIRE([AC_PROG_CXX])dnl
+AC_LANG_PUSH(C++)
+m4_pushdef([acx_Var], [m4_default([$2], [WARN_PEDANTIC])])dnl
+AC_SUBST(acx_Var)dnl
+m4_expand_once([acx_Var=
+],m4_quote(acx_Var=))dnl
+# Do the check with the no- prefix removed from the warning options
+# since gcc silently accepts any -Wno-* option on purpose
+m4_pushdef([acx_Woptions], [m4_bpatsubst([$1], [-Wno-], [-W])])dnl
+AS_VAR_PUSHDEF([acx_Pedantic], [acx_cv_prog_cc_pedantic_]acx_Woptions)dnl
+AS_IF([test "$GXX" = yes],
+[AC_CACHE_CHECK([whether $CXX supports -pedantic ]acx_Woptions, acx_Pedantic,
+[save_CXXFLAGS="$CXXFLAGS"
+CXXFLAGS="-pedantic acx_Woptions"
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
+ [AS_VAR_SET(acx_Pedantic, yes)],
+ [AS_VAR_SET(acx_Pedantic, no)])
+CXXFLAGS="$save_CXXFLAGS"])
+AS_IF([test AS_VAR_GET(acx_Pedantic) = yes],
+ [acx_Var="$acx_Var${acx_Var:+ }-pedantic $1"])
+])
+AS_VAR_POPDEF([acx_Pedantic])dnl
+m4_popdef([acx_Woptions])dnl
+m4_popdef([acx_Var])dnl
+AC_LANG_POP(C++)
+])# ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC
+
+# ACX_PROG_CXX_WARNINGS_ARE_ERRORS([x.y.z], [VARIABLE = WERROR])
+# sets @VARIABLE@ to "-Werror" if the compiler is G++ >=x.y.z, or if
+# --enable-werror-always was given on the command line, otherwise
+# to nothing.
+# If the argument is the word "manual" instead of a version number,
+# then @VARIABLE@ will be set to -Werror only if --enable-werror-always
+# appeared on the configure command line.
+AC_DEFUN([ACX_PROG_CXX_WARNINGS_ARE_ERRORS],
+[AC_REQUIRE([AC_PROG_CXX])dnl
+AC_LANG_PUSH(C++)
+m4_pushdef([acx_Var], [m4_default([$2], [WERROR])])dnl
+AC_SUBST(acx_Var)dnl
+m4_expand_once([acx_Var=
+],m4_quote(acx_Var=))dnl
+AC_ARG_ENABLE(werror-always,
+ AS_HELP_STRING([--enable-werror-always],
+ [enable -Werror despite compiler version]),
+[], [enable_werror_always=no])
+AS_IF([test $enable_werror_always = yes],
+ [acx_Var="$acx_Var${acx_Var:+ }-Werror"])
+ m4_if($1, [manual],,
+ [AS_VAR_PUSHDEF([acx_GXXvers], [acx_cv_prog_cxx_gxx_$1_or_newer])dnl
+ AC_CACHE_CHECK([whether $CXX is G++ >=$1], acx_GXXvers,
+ [set fnord `echo $1 | tr '.' ' '`
+ shift
+ AC_PREPROC_IFELSE(
+[#if __GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ \
+ < [$]1 * 10000 + [$]2 * 100 + [$]3
+#error insufficient
+#endif],
+ [AS_VAR_SET(acx_GXXvers, yes)],
+ [AS_VAR_SET(acx_GXXvers, no)])])
+ AS_IF([test AS_VAR_GET(acx_GXXvers) = yes],
+ [acx_Var="$acx_Var${acx_Var:+ }-Werror"])
+ AS_VAR_POPDEF([acx_GXXvers])])
+m4_popdef([acx_Var])dnl
+AC_LANG_POP(C++)
+])# ACX_PROG_CXX_WARNINGS_ARE_ERRORS
projects / deliverable / binutils-gdb.git / blobdiff