Boostrap with changes in auto conf scripts

Author: GiudGiud

configure

@@ -2634,6 +2634,53 @@ fi
 
 } # ac_fn_cxx_try_run
 
+# ac_fn_cxx_try_link LINENO
+# -------------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_cxx_try_link ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest.beam conftest$ac_exeext
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext && {
+	 test "$cross_compiling" = yes ||
+	 test -x conftest$ac_exeext
+       }
+then :
+  ac_retval=0
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+  # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+  # interfere with the next link command; also delete a directory that is
+  # left behind by Apple's compiler.  We do this before executing the actions.
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_cxx_try_link
+
 # ac_fn_c_try_link LINENO
 # -----------------------
 # Try to link conftest.$ac_ext, and return whether this succeeded.
@@ -2814,53 +2861,6 @@ fi
 
 } # ac_fn_cxx_try_cpp
 
-# ac_fn_cxx_try_link LINENO
-# -------------------------
-# Try to link conftest.$ac_ext, and return whether this succeeded.
-ac_fn_cxx_try_link ()
-{
-  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  rm -f conftest.$ac_objext conftest.beam conftest$ac_exeext
-  if { { ac_try="$ac_link"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-printf "%s\n" "$ac_try_echo"; } >&5
-  (eval "$ac_link") 2>conftest.err
-  ac_status=$?
-  if test -s conftest.err; then
-    grep -v '^ *+' conftest.err >conftest.er1
-    cat conftest.er1 >&5
-    mv -f conftest.er1 conftest.err
-  fi
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; } && {
-	 test -z "$ac_cxx_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest$ac_exeext && {
-	 test "$cross_compiling" = yes ||
-	 test -x conftest$ac_exeext
-       }
-then :
-  ac_retval=0
-else $as_nop
-  printf "%s\n" "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_retval=1
-fi
-  # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
-  # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
-  # interfere with the next link command; also delete a directory that is
-  # left behind by Apple's compiler.  We do this before executing the actions.
-  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
-  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
-  as_fn_set_status $ac_retval
-
-} # ac_fn_cxx_try_link
-
 # ac_fn_f77_try_link LINENO
 # -------------------------
 # Try to link conftest.$ac_ext, and return whether this succeeded.
@@ -26608,6 +26608,32 @@ fi
                         ;; #(
   clang) :
 
+                                                                     OLD_ACSM_LDFLAGS="$ACSM_LDFLAGS"
+                       ACSM_LDFLAGS+=" -Wl,-femit-dwarf-unwind=always -Wl,-no_compact_unwind"
+                       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+                           void main(int argc, char **argv)
+                           {
+                             std::cout << "Hello World!" << std::endl;
+                           }
+
+_ACEOF
+if ac_fn_cxx_try_link "$LINENO"
+then :
+
+                          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: <<<Disabling compact unwinding" >&5
+printf "%s\n" "<<<Disabling compact unwinding" >&6; }
+
+else $as_nop
+
+                                                    ACSM_LDFLAGS="$OLD_ACSM_LDFLAGS"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+
                        ACSM_CXXFLAGS_OPT="$ACSM_CXXFLAGS_OPT -O2 -felide-constructors -Qunused-arguments -Wunused-parameter -Wunused"
                                               ACSM_CXXFLAGS_DEVEL="$ACSM_CXXFLAGS_DEVEL -O2 -felide-constructors -g -pedantic -W -Wall -Wextra -Wno-long-long"
                        ACSM_CXXFLAGS_DEVEL="$ACSM_CXXFLAGS_DEVEL -Wunused-parameter -Wunused -Wpointer-arith -Wformat -Wparentheses -Wuninitialized -Qunused-arguments -Woverloaded-virtual -fno-limit-debug-info"
@@ -26865,6 +26891,8 @@ fi
   CFLAGS_DEVEL="$ACSM_CFLAGS_DEVEL"
   CFLAGS_DBG="$ACSM_CFLAGS_DBG"
 
+  LDFLAGS+=" $ACSM_LDFLAGS"
+
   ASSEMBLY_FLAGS="$ACSM_ASSEMBLY_FLAGS"
   NODEPRECATEDFLAG="$ACSM_NODEPRECATEDFLAG"
   OPROFILE_FLAGS="$ACSM_OPROFILE_FLAGS"
@@ -64421,6 +64449,7 @@ esac
 
           printf "%s\n"
 done
+printf "%s\n" "LDFLAGS............................ : $LDFLAGS"
 printf "%s\n" "Any warnings-to-errors flags....... : $ACSM_ANY_WERROR_FLAG"
 printf "%s\n" "Any extra paranoid warning flags... : $ACSM_ANY_PARANOID_FLAGS"
 printf "%s\n" "Install dir........................ : $prefix"