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-rwxr-xr-xconfigure16
1 files changed, 14 insertions, 2 deletions
diff --git a/configure b/configure
index b272a0336b..6d8c996c62 100755
--- a/configure
+++ b/configure
@@ -3464,6 +3464,7 @@ else
       done
       if test "$found" = "no"; then
         LIBS="$pthread_lib $LIBS"
+        libs_qga="$pthread_lib $libs_qga"
       fi
       PTHREAD_LIB="$pthread_lib"
       break
@@ -5193,8 +5194,19 @@ if test "$gcov" = "yes" ; then
   LDFLAGS="-fprofile-arcs -ftest-coverage $LDFLAGS"
 elif test "$fortify_source" = "yes" ; then
   CFLAGS="-O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $CFLAGS"
-elif test "$debug" = "no"; then
-  CFLAGS="-O2 $CFLAGS"
+elif test "$debug" = "yes"; then
+  if compile_prog "-Og" ""; then
+      CFLAGS="-Og $CFLAGS"
+  elif compile_prog "-O1" ""; then
+      CFLAGS="-O1 $CFLAGS"
+  fi
+  # Workaround GCC false-positive Wuninitialized bugs with Og or O1:
+  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639
+  if cc_has_warning_flag "-Wno-maybe-uninitialized"; then
+      CFLAGS="-Wno-maybe-uninitialized $CFLAGS"
+  fi
+else
+    CFLAGS="-O2 $CFLAGS"
 fi
 
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