fix subtle flex problems on MacOS

Change-Id: Id3d8313eabcef926b3ab3c121597f7b8cb5e0124

l10ntools/source/cfglex.l

@@ -45,6 +45,7 @@ extern "C" FILE * init(int, char **);
 int bText=0;
 %}
 
+%option yylineno
 %option never-interactive
 
 %p 24000

l10ntools/source/srclex.l

@@ -47,6 +47,7 @@ extern "C" void Close();
 void YYWarning();
 %}
 
+%option yylineno
 %option never-interactive
 
 %p 24000

l10ntools/source/xrmlex.l

@@ -53,6 +53,7 @@ void YYWarning();
 int bText=0;
 %}
 
+%option yylineno
 %option never-interactive
 
 %p 24000

solenv/gbuild/LinkTarget.mk

@@ -268,7 +268,7 @@ define gb_LexTarget__command
 $(call gb_Output_announce,$(2),$(true),LEX,3)
 $(call gb_Helper_abbreviate_dirs,\
 	mkdir -p $(dir $(3)) && \
-	$(FLEX) $(T_LEXFLAGS) -o $(4) $(1) && touch $(3) )
+	$(FLEX) $(T_LEXFLAGS) -o$(4) $(1) && touch $(3) )
 endef