From: Ed Schouten <ed@nuxi.nl>
Date: Tue, 9 Jan 2018 09:18:14 +0000 (+0000)
Subject: ananas: Add shared library support
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=fbd4ae912b1cbb4b6a1f12d5583c2d4ecaf14b9e;p=clang

ananas: Add shared library support

The Ananas Operating System (https://github.com/zhmu/ananas) has shared
library support as of commit 57739c0b6ece56dd4872aedf30264ed4b9412c77.

This change adds the necessary settings to clang so that shared
executables and libraries can be build correctly.

Submitted by:	Rink Springer
Differential Revision:	https://reviews.llvm.org/D41500


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@322064 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Driver/ToolChains/Ananas.cpp b/lib/Driver/ToolChains/Ananas.cpp
index ee072cc03e..8b70aea103 100644
--- a/lib/Driver/ToolChains/Ananas.cpp
+++ b/lib/Driver/ToolChains/Ananas.cpp
@@ -64,8 +64,19 @@ void ananas::Linker::ConstructJob(Compilation &C, const JobAction &JA,
   if (!D.SysRoot.empty())
     CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
 
-  // Ananas only supports static linkage for now.
-  CmdArgs.push_back("-Bstatic");
+  if (Args.hasArg(options::OPT_static)) {
+    CmdArgs.push_back("-Bstatic");
+  } else {
+    if (Args.hasArg(options::OPT_rdynamic))
+      CmdArgs.push_back("-export-dynamic");
+    if (Args.hasArg(options::OPT_shared)) {
+      CmdArgs.push_back("-Bshareable");
+    } else {
+      Args.AddAllArgs(CmdArgs, options::OPT_pie);
+      CmdArgs.push_back("-dynamic-linker");
+      CmdArgs.push_back("/lib/ld-ananas.so");
+    }
+  }
 
   if (Output.isFilename()) {
     CmdArgs.push_back("-o");
@@ -75,9 +86,15 @@ void ananas::Linker::ConstructJob(Compilation &C, const JobAction &JA,
   }
 
   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
-    CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
+    if (!Args.hasArg(options::OPT_shared)) {
+      CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
+    }
     CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
-    CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtbegin.o")));
+    if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie)) {
+      CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtbeginS.o")));
+    } else {
+      CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtbegin.o")));
+    }
   }
 
   Args.AddAllArgs(CmdArgs, options::OPT_L);
@@ -97,7 +114,10 @@ void ananas::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back("-lc");
 
   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
-    CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
+    if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie))
+      CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o")));
+    else
+      CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
     CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
   }
 
diff --git a/test/Driver/ananas.c b/test/Driver/ananas.c
index 2a5b35ed6c..4edc2a1094 100644
--- a/test/Driver/ananas.c
+++ b/test/Driver/ananas.c
@@ -7,3 +7,11 @@
 // CHECK-STATIC: crtbegin.o
 // CHECK-STATIC: crtend.o
 // CHECK-STATIC: crtn.o
+
+// RUN: %clang -no-canonical-prefixes -target x86_64-unknown-ananas -shared %s \
+// RUN:   --sysroot=%S/Inputs/ananas-tree -### 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-SHARED %s
+// CHECK-SHARED: crti.o
+// CHECK-SHARED: crtbeginS.o
+// CHECK-SHARED: crtendS.o
+// CHECK-SHARED: crtn.o