From 0da0d5ea10a00676f6b463d7c0a3533d088c7eba Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@redhat.com>
Date: Wed, 20 Jun 2018 15:48:07 +0200
Subject: [PATCH] bpo-30345: Add -g to LDFLAGS for LTO (GH-7709)

Add -g to LDFLAGS when compiling with LTO to get debug symbols.
---
 .../next/Build/2018-06-15-18-18-16.bpo-30345.j-xRE1.rst    | 1 +
 configure                                                  | 7 +++++++
 configure.ac                                               | 7 +++++++
 3 files changed, 15 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Build/2018-06-15-18-18-16.bpo-30345.j-xRE1.rst

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
new file mode 100644
index 000000000000000..f8db09bdbc6684b
--- /dev/null
+++ 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
index 986ab871bd53ec3..8c2a0ca5466614d 100755
--- a/configure
+++ b/configure
@@ -6618,6 +6618,13 @@ 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
 fi
 
 # Enable PGO flags.
diff --git a/configure.ac b/configure.ac
index 338be3b9a6bd445..f2cd11730b69510 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1347,6 +1347,13 @@ 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
 fi
 
 # Enable PGO flags.