Add supportsDynamicLinker to CppConfiguration

Rather than a new protobuf field, this enabling flag is presence of a section with DYNAMIC linking mode in the CROSSTOOL file, whether or not it needs to specify any linker flags.

RELNOTES[NEW]: Better support for toolchains that don't have a dynamic linker.

--
MOS_MIGRATED_REVID=114110200

1 files changed, 8 insertions, 0 deletions

diff --git a/tools/cpp/CROSSTOOL b/tools/cpp/CROSSTOOL
index 1552fd733e..269edea9d8 100644
--- a/tools/cpp/CROSSTOOL
+++ b/tools/cpp/CROSSTOOL
@@ -62,6 +62,7 @@ toolchain {
   tool_path { name: "objcopy" path: "/bin/false" }
   tool_path { name: "objdump" path: "/bin/false" }
   tool_path { name: "strip" path: "/bin/false" }
+  linking_mode_flags { mode: DYNAMIC }
 }
 
 toolchain {
@@ -185,6 +186,7 @@ toolchain {
     compiler_flag: "-fdata-sections"
     linker_flag: "-Wl,--gc-sections"
   }
+  linking_mode_flags { mode: DYNAMIC }
 }
 
 toolchain {
@@ -278,6 +280,7 @@ toolchain {
     compiler_flag: "-ffunction-sections"
     compiler_flag: "-fdata-sections"
   }
+  linking_mode_flags { mode: DYNAMIC }
 }
 
 toolchain {
@@ -399,6 +402,7 @@ toolchain {
     compiler_flag: "-fdata-sections"
     linker_flag: "-Wl,--gc-sections"
   }
+  linking_mode_flags { mode: DYNAMIC }
 }
 
 toolchain {
@@ -433,6 +437,7 @@ toolchain {
   objcopy_embed_flag: "binary"
   tool_path { name: "objdump" path: "C:/mingw/bin/objdump" }
   tool_path { name: "strip" path: "C:/mingw/bin/strip" }
+  linking_mode_flags { mode: DYNAMIC }
 }
 
 toolchain {
@@ -466,6 +471,7 @@ toolchain {
   objcopy_embed_flag: "binary"
   tool_path { name: "objdump" path: "C:/msys64/mingw64/bin/objdump" }
   tool_path { name: "strip" path: "C:/msys64/mingw64/bin/strip" }
+  linking_mode_flags { mode: DYNAMIC }
 }
 
 toolchain {
@@ -501,6 +507,7 @@ toolchain {
   objcopy_embed_flag: "binary"
   tool_path { name: "objdump" path: "C:/Program Files (x86)/LLVM/bin/objdump" }
   tool_path { name: "strip" path: "C:/Program Files (x86)/LLVM/bin/strip" }
+  linking_mode_flags { mode: DYNAMIC }
 }
 
 toolchain {
@@ -537,4 +544,5 @@ toolchain {
    objcopy_embed_flag: "binary"
    tool_path { name: "objdump" path: "C:/msys64/usr/bin/objdump" }
    tool_path { name: "strip" path: "C:/msys64/usr/bin/strip" }
+   linking_mode_flags { mode: DYNAMIC }
 }