From 52aaad22bbcb030ed05b9634328052f15022dcdd Mon Sep 17 00:00:00 2001
From: wwieclaw <wiktor.wieclaw@codilime.com>
Date: Mon, 26 Jun 2023 11:11:47 +0200
Subject: [PATCH] change how debug build is determined

---
 CMakeLists.txt          |  4 ++++
 bazel/gflags.bzl        | 12 +++++++++++-
 src/gflags_reporting.cc |  4 ++--
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3952c6b..2c3fc8c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -470,6 +470,10 @@ foreach (TYPE IN ITEMS STATIC SHARED)
           VERSION     "${PACKAGE_VERSION}"
           SOVERSION   "${PACKAGE_SOVERSION}"
         )
+        target_compile_definitions(${target_name}
+          PRIVATE
+          $<$<CONFIG:Debug>:GFLAGS_DEBUG_BUILD>
+        )
         set (include_dirs "$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>")
         if (INSTALL_HEADERS)
           list (APPEND include_dirs "$<INSTALL_INTERFACE:${INCLUDE_INSTALL_DIR}>")
diff --git a/bazel/gflags.bzl b/bazel/gflags.bzl
index 533fd61..ef815ec 100644
--- a/bazel/gflags.bzl
+++ b/bazel/gflags.bzl
@@ -92,12 +92,22 @@ def gflags_library(hdrs=[], srcs=[], threads=1):
     else:
         name += "_nothreads"
         copts += ["-DNO_THREADS"]
+    config_setting(
+        name = "gflags_debug_build",
+        values = {
+            "compilation_mode": "dbg",
+        },
+    )
     native.cc_library(
         name       = name,
         hdrs       = hdrs,
         srcs       = srcs,
         copts      = copts,
         linkopts   = linkopts,
+        defines    = select({
+            ":gflags_debug_build": ["GFLAGS_DEBUG_BUILD"],
+            "//conditions:default": []
+        }),
         visibility = ["//visibility:public"],
-        include_prefix = 'gflags'
+        includes   = ['src']
     )
diff --git a/src/gflags_reporting.cc b/src/gflags_reporting.cc
index 20e0b1a..be529f7 100644
--- a/src/gflags_reporting.cc
+++ b/src/gflags_reporting.cc
@@ -353,8 +353,8 @@ static void ShowVersion() {
   } else {
     fprintf(stdout, "%s\n", ProgramInvocationShortName());
   }
-# if !defined(NDEBUG)
-  fprintf(stdout, "Debug build (NDEBUG not #defined)\n");
+# ifdef GFLAGS_DEBUG_BUILD
+  fprintf(stdout, "Debug build\n");
 # endif
 }