Add $SysInclude system variable.

src/Makefile.in

@@ -40,7 +40,7 @@ test: remind
 	@sh ../tests/test-rem
 
 .c.o:
-	@CC@ -c @CPPFLAGS@ @CFLAGS@ @DEFS@ $(CEXTRA) $(LANGDEF) -I. -I$(srcdir) $<
+	@CC@ -c @CPPFLAGS@ @CFLAGS@ @DEFS@ $(CEXTRA) $(LANGDEF) -DSYSDIR=$(datarootdir)/remind -I. -I$(srcdir) $<
 
 $(REMINDOBJS): $(REMINDHDRS)
 

src/globals.h

@@ -227,6 +227,15 @@ EXTERN	int	MonthDays[]
 #endif
 ;
 
+#define XSTR(x) #x
+#define STRSYSDIR(x) XSTR(x)
+
+EXTERN char *SysDir
+#ifdef MK_GLOBALS
+= STRSYSDIR(SYSDIR);
+#endif
+;
+
 /* The first day of each month expressed as number of days after Jan 1.
    Second row is for leap years. */
 

src/var.c

@@ -836,6 +836,7 @@ static SysVar SysVarArr[] = {
     {"SortByTime",     0,  INT_TYPE,     &SortByTime,          0,      0,    NULL },
     {"SubsIndent",     1,  INT_TYPE,     &SubsIndent,          0,      132,  NULL },
     {"Sunday",         1,  STR_TYPE,     &DynamicDayName[6],   0,      0,    NULL },
+    {"SysInclude",     0,  STR_TYPE,     &SysDir,              0,      0,    NULL },
     {"T",              0,  SPECIAL_TYPE, trig_date_func,       0,      0,    NULL },
     {"Td",             0,  SPECIAL_TYPE, trig_day_func,        0,      0,    NULL },
     {"Thursday",       1,  STR_TYPE,     &DynamicDayName[3],   0,      0,    NULL },

tests/test-rem

@@ -328,6 +328,8 @@ fi
 ../src/remind -w128 -c ../tests/utf-8.rem 1 Nov 2019 >> ../tests/test.out
 ../src/remind -c ../tests/test-addomit.rem 1 Sep 2021 >> ../tests/test.out
 
+# Remove references to SysInclude, which is build-specific
+fgrep -v '$SysInclude' < ../tests/test.out > ../tests/test.out.1 && mv -f ../tests/test.out.1 ../tests/test.out
 cmp -s ../tests/test.out ../tests/test.cmp
 if [ "$?" = "0" ]; then
    echo "Remind:  Acceptance test PASSED"

tests/test.cmp

@@ -7979,4 +7979,4 @@ February 29
 |          |          |          |          |          |          |          |
 |          |          |          |          |          |          |          |
 +----------+----------+----------+----------+----------+----------+----------+
-
+