fix entry
[gcc.git] / configure.ac
index 267c8e61297f2864ba6e195466807991ed60ebf5..431cb170e163329f82a3c8e55a9752396d149e67 100644 (file)
@@ -162,6 +162,7 @@ target_libraries="target-libgcc \
                target-libstdc++-v3 \
                target-libsanitizer \
                target-libvtv \
+               target-libmpx \
                target-libssp \
                target-libquadmath \
                target-libgfortran \
@@ -640,6 +641,27 @@ if test -d ${srcdir}/libvtv; then
     fi
 fi
 
+
+# Enable libmpx on supported systems by request.
+if test -d ${srcdir}/libmpx; then
+    if test x$enable_libmpx = xyes; then
+       AC_MSG_CHECKING([for libmpx support])
+       if (srcdir=${srcdir}/libmpx; \
+               . ${srcdir}/configure.tgt; \
+               test "$LIBMPX_SUPPORTED" != "yes")
+       then
+           AC_MSG_RESULT([no])
+           noconfigdirs="$noconfigdirs target-libmpx"
+       else
+           AC_MSG_RESULT([yes])
+       fi
+    else
+       noconfigdirs="$noconfigdirs target-libmpx"
+    fi
+fi
+
+
+
 # Disable libquadmath for some systems.
 case "${target}" in
   avr-*-*)
@@ -688,6 +710,9 @@ if test "${ENABLE_LIBSTDCXX}" = "default" ; then
     avr-*-*)
       noconfigdirs="$noconfigdirs target-libstdc++-v3"
       ;;
+    ft32-*-*)
+      noconfigdirs="$noconfigdirs target-libstdc++-v3"
+      ;;
   esac
 fi
 
@@ -1275,7 +1300,7 @@ case "${host}" in
   *-mingw*)
     host_makefile_frag="config/mh-mingw"
     ;;
-  alpha*-*-linux*)
+  alpha*-linux*)
     host_makefile_frag="config/mh-alpha-linux"
     ;;
   hppa*-hp-hpux10*)
@@ -1417,6 +1442,12 @@ case "$have_compiler:$host:$target:$enable_bootstrap" in
     ;;
 esac
 
+# When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
+# C++98 compiler can still start the bootstrap.
+if test "$enable_bootstrap:$GXX" = "yes:yes"; then
+  CXX="$CXX -std=c++98"
+fi
+
 # Used for setting $lt_cv_objdir
 _LT_CHECK_OBJDIR
 
@@ -1918,6 +1949,14 @@ if test -d ${srcdir}/gcc; then
     fi
   fi
 
+  # If we're building an offloading compiler, add the LTO front end.
+  if test x"$enable_as_accelerator_for" != x ; then
+    case ,${enable_languages}, in
+      *,lto,*) ;;
+      *) enable_languages="${enable_languages},lto" ;;
+    esac
+  fi
+
   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
   potential_languages=,c,
 
@@ -2314,28 +2353,36 @@ AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
 # gcc) are built with "-O2 -g", so include those options when setting
 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
 if test "x$CFLAGS_FOR_TARGET" = x; then
-  CFLAGS_FOR_TARGET=$CFLAGS
-  case " $CFLAGS " in
-    *" -O2 "*) ;;
-    *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
-  esac
-  case " $CFLAGS " in
-    *" -g "* | *" -g3 "*) ;;
-    *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
-  esac
+  if test "x${is_cross_compiler}" = xyes; then
+    CFLAGS_FOR_TARGET="-g -O2"
+  else
+    CFLAGS_FOR_TARGET=$CFLAGS
+    case " $CFLAGS " in
+      *" -O2 "*) ;;
+      *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
+    esac
+    case " $CFLAGS " in
+      *" -g "* | *" -g3 "*) ;;
+      *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
+    esac
+  fi
 fi
 AC_SUBST(CFLAGS_FOR_TARGET)
 
 if test "x$CXXFLAGS_FOR_TARGET" = x; then
-  CXXFLAGS_FOR_TARGET=$CXXFLAGS
-  case " $CXXFLAGS " in
-    *" -O2 "*) ;;
-    *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
-  esac
-  case " $CXXFLAGS " in
-    *" -g "* | *" -g3 "*) ;;
-    *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
-  esac
+  if test "x${is_cross_compiler}" = xyes; then
+    CXXFLAGS_FOR_TARGET="-g -O2"
+  else
+    CXXFLAGS_FOR_TARGET=$CXXFLAGS
+    case " $CXXFLAGS " in
+      *" -O2 "*) ;;
+      *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
+    esac
+    case " $CXXFLAGS " in
+      *" -g "* | *" -g3 "*) ;;
+      *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
+    esac
+  fi
 fi
 AC_SUBST(CXXFLAGS_FOR_TARGET)
 
@@ -2667,6 +2714,11 @@ if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
 fi
 
+# If we are building libmpx, bootstrap it.
+if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
+  bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
+fi
+
 # Determine whether gdb needs tk/tcl or not.
 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
 # and in that case we want gdb to be built without tk.  Ugh!
@@ -3020,7 +3072,7 @@ fi
 # multilib is not explicitly enabled.
 case "$target:$have_compiler:$host:$target:$enable_multilib" in
   x86_64-*linux*:yes:$build:$build:)
-    # Make sure we have a developement environment that handles 32-bit
+    # Make sure we have a development environment that handles 32-bit
     dev64=no
     echo "int main () { return 0; }" > conftest.c
     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
@@ -3031,7 +3083,7 @@ case "$target:$have_compiler:$host:$target:$enable_multilib" in
     fi 
     rm -f conftest*
     if test x${dev64} != xyes ; then
-      AC_MSG_ERROR([I suspect your system does not have 32-bit developement libraries (libc and headers). If you have them, rerun configure with --enable-multilib. If you do not have them, and want to build a 64-bit-only compiler, rerun configure with --disable-multilib.])
+      AC_MSG_ERROR([I suspect your system does not have 32-bit development libraries (libc and headers). If you have them, rerun configure with --enable-multilib. If you do not have them, and want to build a 64-bit-only compiler, rerun configure with --disable-multilib.])
     fi
     ;;
 esac
@@ -3439,7 +3491,19 @@ AC_ARG_ENABLE(stage1-checking,
                [choose additional checking for stage1 of the compiler])],
 [stage1_checking=--enable-checking=${enable_stage1_checking}],
 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
-  stage1_checking=--enable-checking=yes,types
+  # For --disable-checking or implicit --enable-checking=release, avoid
+  # setting --enable-checking=gc in the default stage1 checking for LTO
+  # bootstraps.  See PR62077.
+  stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types
+  case $BUILD_CONFIG in
+    *lto*)
+      if test "x$enable_checking" = x && \
+        test -d ${srcdir}/gcc && \
+        test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
+       stage1_checking=--enable-checking=yes,types
+      fi;;
+    *) stage1_checking=--enable-checking=yes,types;;
+  esac
 else
   stage1_checking=--enable-checking=$enable_checking,types
 fi])
@@ -3467,6 +3531,30 @@ AC_ARG_ENABLE(host-shared,
 [host_shared=$enableval], [host_shared=no])
 AC_SUBST(host_shared)
 
+# PR jit/64780: Require the user to explicitly specify
+# --enable-host-shared if the jit is enabled, hinting
+# that they might want to do a separate configure/build of
+# the jit, to avoid users from slowing down the rest of the
+# compiler by enabling the jit.
+if test ${host_shared} = "no" ; then
+  case "${enable_languages}" in
+    *jit*)
+      AC_MSG_ERROR([
+Enabling language "jit" requires --enable-host-shared.
+
+--enable-host-shared typically slows the rest of the compiler down by
+a few %, so you must explicitly enable it.
+
+If you want to build both the jit and the regular compiler, it is often
+best to do this via two separate configure/builds, in separate
+directories, to avoid imposing the performance cost of
+--enable-host-shared on the regular compiler.])
+      ;;
+    *)
+      ;;
+  esac
+fi
+
 # Specify what files to not compare during bootstrap.
 
 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"