[PATCH] GDB: fix python config command line arguments based on python version

[Karel Gardas]

Fixes #4631
---
 source-builder/config/gdb-common-1.cfg | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/source-builder/config/gdb-common-1.cfg b/source-builder/config/gdb-common-1.cfg
index c7f39552..dba6f212 100644
--- a/source-builder/config/gdb-common-1.cfg
+++ b/source-builder/config/gdb-common-1.cfg
@@ -109,7 +109,13 @@
   %endif
   %if %{gdb-python-config} != %{nil}
     %define gdb-python-lib-filter awk 'BEGIN{FS=" "}/python/{for(i=1;i<NF;++i)if(match($i,".*lpython.*")) print "lib"substr($i,3)"*";}'
-    %if %{gdb-python-ver-mm} < 3.8
+    %define gdb-python-ver-mm-major %(echo "%{gdb-python-ver-mm}" | sed -e 's/\..*//')
+    %define gdb-python-ver-mm-minor %(echo "%{gdb-python-ver-mm}" | sed -e 's/.*\.//')
+    # following comparion works correctly even for python 2 as it ends with version 2.7.x
+    # so we do not get possibly problematic 2.8 and others here.
+    # Note: int(...) usage is necessary in order to enforce numerical comparison instead of lexicographical
+    # if we do not use that then 10 < 8 would be true
+    %if int(%{gdb-python-ver-mm-major}) <= 3 && int(%{gdb-python-ver-mm-major}) < 8
         %define gdb-python-config-lib-check-flags --ldflags
     %else
         %define gdb-python-config-lib-check-flags --ldflags --embed
-- 
2.25.1