Started working on build process

.gitmodules

@@ -1,3 +1,4 @@
-[submodule "src/dlg"]
-	path = src/dlg
+
+[submodule "submodules/dlg"]
+	path = submodules/dlg
 	url = https://github.com/nyorain/dlg.git

[priyesh]ChangeLog

@@ -1,3 +1,17 @@
+2020-07-20  Priyesh Kumar   <priyeshkkumar@gmail.com>
+
+    * Changed git submodule(dlg) from `src/dlg` to `submodules/dlg`
+
+    * Updated autogen.sh file:
+        For copying the necessary files from `submodules/dlg` to `src\dlg`.
+        If the git submodule(dlg) is not checked-out, first it runs necessary 
+        git commands for checking out the submodule(dlg) ad then it copies
+        the files.
+    * include/freetype/internal/ftdebug.h:
+        Updated the include path for dlg.
+    
+    * Added a new file `src/dlg/rules.mk`
+
 2020-07-15  Priyesh Kumar   <priyeshkkumar@gmail.com>
 
     * builds/compiler/gcc.mk: Added a flag -std=c99 for using dlg on windows

autogen.sh

@@ -162,4 +162,25 @@ cd ../..
 
 chmod +x ./configure
 
+copy_submodule_files()
+{
+  echo "Copying files from \`submodules/dlg' to \`src/dlg'"
+  cp $DLG_INC_DIR/dlg.h src/dlg
+  cp $DLG_INC_DIR/output.h src/dlg
+  cp $DLG_SRC_DIR/* src/dlg
+}
+
+DLG_INC_DIR=submodules/dlg/include/dlg
+DLG_SRC_DIR=submodules/dlg/src/dlg
+
+if ! test -d "$DLG_INC_DIR"; then 
+  echo "Submodule check out:"
+  git submodule init
+  git submodule update
+  
+  copy_submodule_files
+else 
+  copy_submodule_files
+fi
+
 # EOF

include/freetype/internal/ftdebug.h

@@ -37,8 +37,8 @@
    */ 
                                                                       
 #ifdef FT_LOGGING
-#include <../src/dlg/include/dlg/dlg.h>
-#include <../src/dlg/include/dlg/output.h>
+#include <../src/dlg/dlg.h>
+#include <../src/dlg/output.h>
 #include <freetype/ftlogging.h>
 #endif /* FT_LOGGING */
 

src/base/ftdebug.c

@@ -543,12 +543,14 @@ else
   FT_BASE_DEF( void )
   ft_add_tag( const char* tag )
   {
+    (void) tag;
     /* nothing */
   }
 
   FT_BASE_DEF( void )
   ft_remove_tag( const char* tag )
   {
+    (void) tag;
     /* nothing */
   }
  

src/dlg/rules.mk

@@ -0,0 +1,68 @@
+#
+# FreeType 2 dlg logging library configuration rules
+#
+
+
+# Copyright (C) 1996-2020 by
+# David Turner, Robert Wilhelm, and Werner Lemberg.
+#
+# This file is part of the FreeType project, and may only be used, modified,
+# and distributed under the terms of the FreeType project license,
+# LICENSE.TXT.  By continuing to use, modify, or distribute this file you
+# indicate that you have read the license and understand and accept it
+# fully.
+
+
+# dlg logging library directory
+#
+DLG_DIR := $(SRC_DIR)/dlg
+
+
+DLG_COMPILE := $(CC) $(ANSIFLAGS)                            \
+                     $I$(subst /,$(COMPILER_SEP),$(DLG_DIR)) \
+                     $(INCLUDE_FLAGS)                        \
+                     $(FT_CFLAGS)
+
+
+# dlg logging library sources (i.e., C files)
+#
+DLG_SRC := $(DLG_DIR)/dlg.c
+
+# dlg logging library headers
+#
+DLG_H := $(DLG_SRC:%.c=%.h) \
+             $(DLG_DIR)/output.h
+
+
+# dlg logging library object(s)
+#
+#   DLG_OBJ_M is used during `multi' builds
+#   DLG_OBJ_S is used during `single' builds
+#
+DLG_OBJ_M := $(DLG_SRC:$(DLG_DIR)/%.c=$(OBJ_DIR)/%.$O)
+DLG_OBJ_S := $(OBJ_DIR)/dlg.$O
+
+# dlg logging library source file for single build
+#
+DLG_SRC_S := $(DLG_DIR)/dlg.c
+
+
+# dlg logging library - single object
+#
+$(DLG_OBJ_S): $(DLG_SRC_S) $(DLG_SRC) $(FREETYPE_H) $(DLG_H)
+	$(DLG_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $(DLG_SRC_S))
+
+
+# dlg logging library - multiple objects
+#
+$(OBJ_DIR)/%.$O: $(DLG_DIR)/%.c $(FREETYPE_H) $(DLG_H)
+	$(DLG_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $<)
+
+
+# update main object lists
+#
+DLG_OBJS_S += $(DLG_OBJ_S)
+DLG_OBJS_M += $(DLG_OBJ_M)
+
+
+# EOF