history.c: Patch to solve the 'undefined reference to gp_read_history' Signed-off-by: Michael Fischer diff -purN gnuplot-5.4.0.org/src/history.c gnuplot-5.4.0/src/history.c --- gnuplot-5.4.0.org/src/history.c 2019-12-10 07:22:32.000000000 +0100 +++ gnuplot-5.4.0/src/history.c 2020-09-14 10:07:36.525441702 +0200 @@ -91,7 +91,9 @@ write_history(char *filename) void read_history(char *filename) { - gp_read_history(filename); +#ifdef GNUPLOT_HISTORY + gp_read_history(filename); +#endif }