From 72f416212f51cfb5ac5d3323718512ccc96928c3 Mon Sep 17 00:00:00 2001
From: Nikolas Garofil <ngarofil@users.sourceforge.net>
Date: Tue, 1 Jul 2008 11:13:40 +0000
Subject: [PATCH] configure option for mathfunctions

git-svn-id: https://conky.svn.sourceforge.net/svnroot/conky/trunk/conky1@1204 7f574dfc-610e-0410-a909-a81674777703
---
 configure.ac.in | 15 +++++++++++++++
 src/conky.c     |  9 +++++++++
 2 files changed, 24 insertions(+)

diff --git a/configure.ac.in b/configure.ac.in
index 3454c3a0..f173300a 100644
--- a/configure.ac.in
+++ b/configure.ac.in
@@ -183,6 +183,20 @@ if test x$want_hddtemp = xyes; then
   fi
 fi
 
+dnl
+dnl Math
+dnl
+
+AC_ARG_ENABLE([math],
+              AC_HELP_STRING([--disable-math], [disable if you do not want math support @<:@default=yes@:>@]),
+              [want_math="$enableval"], [want_math=yes])
+
+AM_CONDITIONAL(BUILD_MATH, test x$want_math = xyes)
+if test x$want_math = xyes; then
+  LIBS="$LIBS -lm"
+  AC_DEFINE(MATH, 1, [Define if you want math support])
+fi
+
 dnl
 dnl MPD
 dnl
@@ -662,6 +676,7 @@ $PACKAGE $VERSION configured successfully:
   XMMS2:            $want_xmms2
 
  * General:
+  math:             $want_math
   hddtemp:          $want_hddtemp
   portmon:          $want_portmon
   RSS:              $want_rss
diff --git a/src/conky.c b/src/conky.c
index eef5f0cd..21fe277f 100644
--- a/src/conky.c
+++ b/src/conky.c
@@ -108,6 +108,9 @@ static void print_version(void)
 		   "  * xmms2\n"
 #endif /* XMMS2 */
 		   "\n General features:\n"
+#ifdef MATH
+		   "  * math\n"
+#endif /* Math */
 #ifdef HDDTEMP
 		   "  * hddtemp\n"
 #endif /* HDDTEMP */
@@ -715,7 +718,9 @@ void graph_append(struct special_t *graph, double f, char showaslog)
 	int i;
 
 	if (showaslog) {
+#ifdef MATH
 		f = log10(f + 1);
+#endif
 	}
 	
 	if (!graph->scaled && f > graph->graph_scale) {
@@ -797,7 +802,9 @@ static void new_graph(char *buf, int w, int h, unsigned int first_colour,
 		s->graph_width = s->width - 2;	// subtract 2 for rectangle around
 	} */
 	if (showaslog) {
+#ifdef MATH
 		s->graph_scale = log10(s->graph_scale + 1);
+#endif
 	}
 	if (append) {
 		graph_append(s, i, showaslog);
@@ -7072,6 +7079,7 @@ static void draw_line(char *s)
 						cur_x = tmp_x;
 						cur_y = tmp_y;
 					}
+#ifdef MATH
 					if (show_graph_scale && (specials[special_index].show_scale == 1)) {
 						int tmp_x = cur_x;
 						int tmp_y = cur_y;
@@ -7086,6 +7094,7 @@ static void draw_line(char *s)
 						cur_x = tmp_x;
 						cur_y = tmp_y;
 					}
+#endif
 					set_foreground_color(last_colour);
 					break;
 				}