From 036ccd8efa9ca16734b8baf4cc022eacb5d78576 Mon Sep 17 00:00:00 2001
From: Igor Pashev <pashev.igor@gmail.com>
Date: Tue, 24 Mar 2015 21:29:00 +0300
Subject: Support SunOS make target-specific variables

---
 read.c                                |  7 ++++++-
 tests/scripts/features/sun-targetvars | 23 +++++++++++++++++++++++
 variable.c                            |  3 +++
 3 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 tests/scripts/features/sun-targetvars

diff --git a/read.c b/read.c
index e67d386..38cdbdd 100644
--- a/read.c
+++ b/read.c
@@ -1157,6 +1157,10 @@ eval (struct ebuffer *ebuf, int set_default)
         if (two_colon)
           p2++;
 
+        /* In sunmake mode ":=" means target-specific variable, not ":" */
+        if (sun_flag && (*p2 == '='))
+          p2++;
+
         /* Test to see if it's a target-specific variable.  Copy the rest
            of the buffer over, possibly temporarily (we'll expand it later
            if it's not a target-specific variable).  PLEN saves the length
@@ -2668,7 +2672,8 @@ get_next_mword (char *buffer, char *delim, char **startp, unsigned int *length)
 
         case '=':
           ++p;
-          wtype = w_varassign;
+          /* In sunmake mode ":=" acts as ":" in normal mode.  */
+          wtype = sun_flag ? w_colon : w_varassign;
           break;
         }
       break;
diff --git a/tests/scripts/features/sun-targetvars b/tests/scripts/features/sun-targetvars
new file mode 100644
index 0000000..157973b
--- /dev/null
+++ b/tests/scripts/features/sun-targetvars
@@ -0,0 +1,23 @@
+#                                                                    -*-perl-*-
+$description = "Check SunOS make target-specific assignment.";
+
+$details = "In SunOS make mode ':=' is used for target-specific variable, instead of ':'
+Thus, ':=' cannot be used as variable assignment at all.";
+
+# SunOS make mode, $(other) is undefined:
+run_make_test('
+FOO = true
+all: other
+	@echo $(FOO)
+other := FOO = false
+other:
+	@echo $(FOO) $(other)
+',
+'--sun',
+"false\ntrue\n");
+
+# Same file, but in normal mode, $(other) is "FOO = false":
+run_make_test(undef, '', "true FOO = false\ntrue\n");
+
+# This tells the test driver that the perl test script executed properly.
+1;
diff --git a/variable.c b/variable.c
index 0b89d37..207b6d8 100644
--- a/variable.c
+++ b/variable.c
@@ -1492,6 +1492,9 @@ parse_variable_definition (const char *p, struct variable *var)
           switch (c)
             {
               case ':':
+                /* In sunmake mode ":=" is not a variable assignment.  */
+                if (sun_flag)
+                  return NULL;
                 var->flavor = f_simple;
                 break;
               case '+':
-- 
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