Add options for separate compile and link sysroots

Add `CMAKE_SYSROOT_COMPILE` and `CMAKE_SYSROOT_LINK` variables to as
operation-specific alternatives to `CMAKE_SYSROOT`.  This will be useful
for Android NDKs that compile and link with different sysroot values
(e.g. `r14` with unified headers).

Co-Author: Florent Castelli <florent.castelli@gmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/Source/cmRulePlaceholderExpander.h b/Source/cmRulePlaceholderExpander.h
index 90b4119..7b19210 100644
--- a/Source/cmRulePlaceholderExpander.h
+++ b/Source/cmRulePlaceholderExpander.h
@@ -17,7 +17,7 @@ public:
   cmRulePlaceholderExpander(
     std::map<std::string, std::string> const& compilers,
     std::map<std::string, std::string> const& variableMappings,
-    std::string const& compilerSysroot);
+    std::string const& compilerSysroot, std::string const& linkerSysroot);
 
   void SetTargetImpLib(std::string const& targetImpLib)
   {
@@ -76,6 +76,7 @@ private:
   std::map<std::string, std::string> Compilers;
   std::map<std::string, std::string> VariableMappings;
   std::string CompilerSysroot;
+  std::string LinkerSysroot;
 };
 
 #endif