introduce ft_basename(): if libgen.h is available, it is a macro to system basename()

builds/unix/configure.raw

@@ -111,7 +111,7 @@ esac
 # checks for header files
 
 AC_HEADER_STDC
-AC_CHECK_HEADERS([fcntl.h unistd.h])
+AC_CHECK_HEADERS([fcntl.h unistd.h libgen.h])
 
 
 # checks for typedefs, structures, and compiler characteristics

builds/unix/ftconfig.in

@@ -60,6 +60,7 @@ FT_BEGIN_HEADER
 #undef HAVE_UNISTD_H
 #undef HAVE_FCNTL_H
 #undef HAVE_STDINT_H
+#undef HAVE_LIBGEN_H
 
 
   /* There are systems (like the Texas Instruments 'C54x) where a `char' */

include/freetype/internal/ftobjs.h

@@ -108,6 +108,14 @@ FT_BEGIN_HEADER
 #define  ft_isalpha( x )  ( ft_isupper( x ) || ft_islower( x ) )
 #define  ft_isalnum( x )  ( ft_isdigit( x ) || ft_isalpha( x ) )
 
+#ifdef HAVE_LIBGEN_H
+#include <libgen.h>
+#define ft_basename( p )  basename( ( p ) )
+#else
+  FT_BASE( char* )
+  ft_basename( char* path );
+#endif
+
 
   /*************************************************************************/
   /*************************************************************************/

src/base/ftobjs.c

@@ -1226,6 +1226,27 @@
   }
 
 
+#ifndef HAVE_LIBGEN_H
+  FT_BASE_DEF( char* )
+  ft_basename( char*  pathname )
+  {
+    char*  c;
+
+
+    c = pathname + ft_strlen( pathname );
+
+    /* skip trailing separator */
+    while ( pathname < c && *c == PLATFORM_DIR_SEPARATOR[0] )
+      c--;
+
+    while ( pathname < c && *(c-1) != PLATFORM_DIR_SEPARATOR[0] )
+      c--;
+
+    return c;
+  }
+#endif
+
+
 #ifdef FT_CONFIG_OPTION_MAC_FONTS
 
   /* The behavior here is very similar to that in base/ftmac.c, but it     */