From 06a2380e679e71306b5664e294e850df115f1131 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C4=90o=C3=A0n=20Tr=E1=BA=A7n=20C=C3=B4ng=20Danh?=
 <congdanhqx@gmail.com>
Date: Mon, 15 Nov 2021 08:43:49 +0700
Subject: [PATCH] djview: don't mess with CFLAGS on --enable-debug

---
 .../djview/patches/keep-debug-symbol.patch    | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 srcpkgs/djview/patches/keep-debug-symbol.patch

diff --git a/srcpkgs/djview/patches/keep-debug-symbol.patch b/srcpkgs/djview/patches/keep-debug-symbol.patch
new file mode 100644
index 00000000000..54f7f39d0fd
--- /dev/null
+++ b/srcpkgs/djview/patches/keep-debug-symbol.patch
@@ -0,0 +1,28 @@
+Index: djview4-4.12/config/acinclude.m4
+===================================================================
+--- djview4-4.12.orig/config/acinclude.m4
++++ djview4-4.12/config/acinclude.m4
+@@ -73,23 +73,6 @@ AC_DEFUN([AC_CXX_OPTIMIZE],[
+         [ac_debug=$enableval],[ac_debug=no])
+    OPTS=
+    AC_SUBST(OPTS)
+-   saved_CXXFLAGS="$CXXFLAGS"
+-   saved_CFLAGS="$CFLAGS"
+-   CXXFLAGS=
+-   CFLAGS=
+-   for opt in $saved_CXXFLAGS ; do
+-     case $opt in
+-       -g*) test $ac_debug != no && OPTS="$OPTS $opt" ;;
+-       -O*) ;;
+-       *) CXXFLAGS="$CXXFLAGS $opt" ;;
+-     esac
+-   done
+-   for opt in $saved_CFLAGS ; do
+-     case $opt in
+-       -O*|-g*) ;;
+-       *) CFLAGS="$CFLAGS $opt" ;;
+-     esac
+-   done
+    if test x$ac_debug = xno ; then
+      OPTS=-DNDEBUG
+      AC_CHECK_CXX_OPT([-Wall],[OPTS="$OPTS -Wall"])