From 0d6f835ffb582296d24a8d1dd479e2703e075ee3 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 18 Oct 2019 14:05:03 +0200
Subject: Add ability to specify "compiler mode" options as part of
 config.{c,cxx}

Such options are (normally) not overridden by buildfiles and are passed
last (after cc.coptions and {c,cxx}.coptions) in the resulting command
lines. They are also cross-hinted between config.c and config.cxx. For
example:

$ b config.cxx="g++ -m64"
---
 libbuild2/utility.cxx | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

(limited to 'libbuild2/utility.cxx')

diff --git a/libbuild2/utility.cxx b/libbuild2/utility.cxx
index af4768c..78d2df2 100644
--- a/libbuild2/utility.cxx
+++ b/libbuild2/utility.cxx
@@ -386,13 +386,17 @@ namespace build2
   }
 
   bool
-  find_options (initializer_list<const char*> os, const lookup& l, bool ic)
+  find_options (const initializer_list<const char*>& os,
+                const lookup& l,
+                bool ic)
   {
     return l && find_options (os, cast<strings> (l), ic);
   }
 
   bool
-  find_options (initializer_list<const char*> os, const strings& strs, bool ic)
+  find_options (const initializer_list<const char*>& os,
+                const strings& strs,
+                bool ic)
   {
     for (const string& s: strs)
       for (const char* o: os)
@@ -403,7 +407,7 @@ namespace build2
   }
 
   bool
-  find_options (initializer_list<const char*> os,
+  find_options (const initializer_list<const char*>& os,
                 const cstrings& cstrs,
                 bool ic)
   {
@@ -447,7 +451,7 @@ namespace build2
   }
 
   const string*
-  find_option_prefixes (initializer_list<const char*> ps,
+  find_option_prefixes (const initializer_list<const char*>& ps,
                         const lookup& l,
                         bool ic)
   {
@@ -455,7 +459,7 @@ namespace build2
   }
 
   const string*
-  find_option_prefixes (initializer_list<const char*> ps,
+  find_option_prefixes (const initializer_list<const char*>& ps,
                         const strings& strs,
                         bool ic)
   {
@@ -470,7 +474,7 @@ namespace build2
   }
 
   const char*
-  find_option_prefixes (initializer_list<const char*> ps,
+  find_option_prefixes (const initializer_list<const char*>& ps,
                         const cstrings& cstrs,
                         bool ic)
   {
-- 
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