bpo-30345: Add -g to LDFLAGS for LTO (GH-7709) (GH-7824)

miss-islington · vstinner · vstinner · commit 1bb9dd337ed5 · 2018-06-22T09:10:20.000+02:00
Add -g to LDFLAGS when compiling with LTO to get debug symbols. (cherry picked from commit 06fe77a) Co-authored-by: Victor Stinner <vstinner@redhat.com>
diff --git a/Misc/NEWS.d/next/Build/2018-06-15-18-18-16.bpo-30345.j-xRE1.rst b/Misc/NEWS.d/next/Build/2018-06-15-18-18-16.bpo-30345.j-xRE1.rst
@@ -0,0 +1 @@
+Add -g to LDFLAGS when compiling with LTO to get debug symbols.
diff --git a/configure b/configure
@@ -6482,6 +6482,14 @@ if test "$Py_LTO" = 'true' ; then
       esac
       ;;
   esac
+
+  if test "$ac_cv_prog_cc_g" = "yes"
+  then
+      # bpo-30345: Add -g to LDFLAGS when compiling with LTO
+      # to get debug symbols.
+      LTOFLAGS="$LTOFLAGS -g"
+  fi
+
   CFLAGS="$CFLAGS $LTOFLAGS"
   LDFLAGS="$LDFLAGS $LTOFLAGS"
 fi
diff --git a/configure.ac b/configure.ac
@@ -1339,6 +1339,14 @@ if test "$Py_LTO" = 'true' ; then
       esac
       ;;
   esac
+
+  if test "$ac_cv_prog_cc_g" = "yes"
+  then
+      # bpo-30345: Add -g to LDFLAGS when compiling with LTO
+      # to get debug symbols.
+      LTOFLAGS="$LTOFLAGS -g"
+  fi
+
   CFLAGS="$CFLAGS $LTOFLAGS"
   LDFLAGS="$LDFLAGS $LTOFLAGS"
 fi

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Add -g to LDFLAGS when compiling with LTO to get debug symbols.`