[PATCH][Solaris] Clang/Driver, stop hardcoding GCC paths in crt/ld.so lookup
Xan López
xan at igalia.com
Tue Jul 28 09:35:30 PDT 2015
Here it is.
On Tue, Jul 28, 2015 at 01:21:06PM +0200, Xan López wrote:
> On Tue, Jul 28, 2015 at 01:55:23PM +0300, Yaron Keren wrote:
> > +cfe-commits
> >
> > This is a very large Solaris special case in ScanLibDirForGCCTriple which
> > shares almost no code with the function.
> > How about splitting it out to a helper function or
> > making ScanLibDirForGCCTriple virtual and overriding on Solaris?
>
> Yep, at least a helper function makes sense, you are right. I'll send
> another patch with either of those suggestions later today.
>
>
> Xan
> _______________________________________________
> llvm-commits mailing list
> llvm-commits at cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
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>From 64415fe8a5818b968f61742e46365ae03716771c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Xan=20L=C3=B3pez?= <xan at igalia.com>
Date: Fri, 24 Jul 2015 19:17:51 +0200
Subject: [PATCH] [Solaris] Stop hardcoding the location of the c runtime files
This refactors the GCC installation detection to work properly on
Solaris (which is a bit of a special case compared to Linux
distributions), and adds the proper /usr/lib/... logic in the
Driver. That way we can just use ToolChain::GetFilePath to locate all
crt*.o files instead of hardcoding their location.
---
lib/Driver/ToolChains.cpp | 92 ++++++++++++++++++++++++++++++++++++++++++++++-
lib/Driver/ToolChains.h | 6 ++++
lib/Driver/Tools.cpp | 48 ++++++++-----------------
3 files changed, 111 insertions(+), 35 deletions(-)
diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 3158e13..8e4cbd9 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -1340,9 +1340,21 @@ bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
"s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
"s390x-suse-linux", "s390x-redhat-linux"};
+ // Solaris.
+ static const char *const SolarisSPARCLibDirs[] = {"/gcc"};
+ static const char *const SolarisSPARCTriples[] = {"sparc-sun-solaris2.11",
+ "i386-pc-solaris2.11"};
+
using std::begin;
using std::end;
+ if (TargetTriple.getOS() == llvm::Triple::Solaris) {
+ LibDirs.append(begin(SolarisSPARCLibDirs), end(SolarisSPARCLibDirs));
+ TripleAliases.append(begin(SolarisSPARCTriples), end(SolarisSPARCTriples));
+
+ return;
+ }
+
switch (TargetTriple.getArch()) {
case llvm::Triple::aarch64:
LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
@@ -1907,6 +1919,57 @@ static bool findBiarchMultilibs(const llvm::Triple &TargetTriple,
return true;
}
+void Generic_GCC::GCCInstallationDetector::SolarisScanLibDirForGCCTriple(const llvm::Triple &TargetArch,
+ const llvm::opt::ArgList &Args,
+ const std::string &LibDir,
+ StringRef CandidateTriple,
+ bool NeedsBiarchSuffix)
+{
+ // Solaris is a special case. The GCC installation is under
+ // /usr/gcc/<major>.<minor>/lib/gcc/<major>.<minor>.<patch>/, so we need to
+ // iterate twice.
+ std::error_code EC;
+ for (llvm::sys::fs::directory_iterator LI(LibDir, EC), LE;
+ !EC && LI != LE; LI = LI.increment(EC)) {
+ StringRef VersionText = llvm::sys::path::filename(LI->path());
+ GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
+
+ if (CandidateVersion.Major != -1) // Filter obviously bad entries.
+ if (!CandidateGCCInstallPaths.insert(LI->path()).second)
+ continue; // Saw this path before; no need to look at it again.
+ if (CandidateVersion.isOlderThan(4, 1, 1))
+ continue;
+ if (CandidateVersion <= Version)
+ continue;
+
+ GCCInstallPath = LibDir + "/" + VersionText.str() + "/lib/gcc/" + CandidateTriple.str();
+ if (!llvm::sys::fs::exists(GCCInstallPath))
+ continue;
+
+ // If we make it here there has to be at least one GCC version, let's just
+ // use the latest one.
+ std::error_code EEC;
+ GCCVersion CandidateSubVersion;
+ for (llvm::sys::fs::directory_iterator LLI(GCCInstallPath, EEC), LLE;
+ !EEC && LLI != LLE; LLI = LLI.increment(EEC)) {
+
+ StringRef SubVersionText = llvm::sys::path::filename(LLI->path());
+ CandidateSubVersion = GCCVersion::Parse(SubVersionText);
+
+ if (!CandidateGCCInstallPaths.insert(LLI->path()).second)
+ continue; // Saw this path before; no need to look at it again.
+ }
+
+ Version = CandidateSubVersion;
+ GCCTriple.setTriple(CandidateTriple);
+
+ GCCInstallPath += "/" + CandidateSubVersion.Text;
+ GCCParentLibPath = GCCInstallPath + "/../../../../";
+
+ IsValid = true;
+ }
+}
+
void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
const llvm::Triple &TargetTriple, const ArgList &Args,
const std::string &LibDir, StringRef CandidateTriple,
@@ -1937,6 +2000,13 @@ void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
"/../..", // <triple>/
"/../../../.." // i386-linux-gnu/gcc/<triple>/
};
+
+ if (TargetTriple.getOS() == llvm::Triple::Solaris) {
+ SolarisScanLibDirForGCCTriple(TargetTriple, Args, LibDir,
+ CandidateTriple, NeedsBiarchSuffix);
+ return;
+ }
+
// Only look at the final, weird Ubuntu suffix for i386-linux-gnu.
const unsigned NumLibSuffixes =
(llvm::array_lengthof(LibSuffixes) - (TargetArch != llvm::Triple::x86));
@@ -2846,12 +2916,32 @@ Solaris::Solaris(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args)
: Generic_GCC(D, Triple, Args) {
+ GCCInstallation.init(D, Triple, Args);
+ if (GCCInstallation.isValid())
+ getFilePaths().push_back(GCCInstallation.getInstallPath());
+
getProgramPaths().push_back(getDriver().getInstalledDir());
if (getDriver().getInstalledDir() != getDriver().Dir)
getProgramPaths().push_back(getDriver().Dir);
getFilePaths().push_back(getDriver().Dir + "/../lib");
- getFilePaths().push_back("/usr/lib");
+
+ std::string LibPath = "/usr/lib/";
+ switch (Triple.getArch()) {
+ case llvm::Triple::x86:
+ case llvm::Triple::sparc:
+ break;
+ case llvm::Triple::x86_64:
+ LibPath += "amd64/";
+ break;
+ case llvm::Triple::sparcv9:
+ LibPath += "sparcv9/";
+ break;
+ default:
+ llvm_unreachable("Unsupported architecture");
+ }
+
+ getFilePaths().push_back(LibPath);
}
Tool *Solaris::buildAssembler() const {
diff --git a/lib/Driver/ToolChains.h b/lib/Driver/ToolChains.h
index cc2a5bb..91d7651 100644
--- a/lib/Driver/ToolChains.h
+++ b/lib/Driver/ToolChains.h
@@ -145,6 +145,12 @@ public:
const std::string &LibDir,
StringRef CandidateTriple,
bool NeedsBiarchSuffix = false);
+
+ void SolarisScanLibDirForGCCTriple(const llvm::Triple &TargetArch,
+ const llvm::opt::ArgList &Args,
+ const std::string &LibDir,
+ StringRef CandidateTriple,
+ bool NeedsBiarchSuffix = false);
};
protected:
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index dd281ad..aefe0e9 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -6722,25 +6722,6 @@ void solaris::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
- // FIXME: Find a real GCC, don't hard-code versions here
- std::string GCCLibPath = "/usr/gcc/4.5/lib/gcc/";
- const llvm::Triple &T = getToolChain().getTriple();
- std::string LibPath = "/usr/lib/";
- const llvm::Triple::ArchType Arch = T.getArch();
- switch (Arch) {
- case llvm::Triple::x86:
- GCCLibPath +=
- ("i386-" + T.getVendorName() + "-" + T.getOSName()).str() + "/4.5.2/";
- break;
- case llvm::Triple::x86_64:
- GCCLibPath += ("i386-" + T.getVendorName() + "-" + T.getOSName()).str();
- GCCLibPath += "/4.5.2/amd64/";
- LibPath += "amd64/";
- break;
- default:
- llvm_unreachable("Unsupported architecture");
- }
-
ArgStringList CmdArgs;
// Demangle C++ names in errors
@@ -6761,7 +6742,7 @@ void solaris::Linker::ConstructJob(Compilation &C, const JobAction &JA,
CmdArgs.push_back("-shared");
} else {
CmdArgs.push_back("--dynamic-linker");
- CmdArgs.push_back(Args.MakeArgString(LibPath + "ld.so.1"));
+ CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("ld.so.1")));
}
}
@@ -6774,21 +6755,20 @@ void solaris::Linker::ConstructJob(Compilation &C, const JobAction &JA,
if (!Args.hasArg(options::OPT_nostdlib) &&
!Args.hasArg(options::OPT_nostartfiles)) {
- if (!Args.hasArg(options::OPT_shared)) {
- CmdArgs.push_back(Args.MakeArgString(LibPath + "crt1.o"));
- CmdArgs.push_back(Args.MakeArgString(LibPath + "crti.o"));
- CmdArgs.push_back(Args.MakeArgString(LibPath + "values-Xa.o"));
- CmdArgs.push_back(Args.MakeArgString(GCCLibPath + "crtbegin.o"));
- } else {
- CmdArgs.push_back(Args.MakeArgString(LibPath + "crti.o"));
- CmdArgs.push_back(Args.MakeArgString(LibPath + "values-Xa.o"));
- CmdArgs.push_back(Args.MakeArgString(GCCLibPath + "crtbegin.o"));
- }
+ if (!Args.hasArg(options::OPT_shared))
+ CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crt1.o")));
+
+ CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crti.o")));
+ CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("values-Xa.o")));
+ CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
+
if (getToolChain().getDriver().CCCIsCXX())
- CmdArgs.push_back(Args.MakeArgString(LibPath + "cxa_finalize.o"));
+ CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("cxa_finalize.o")));
}
- CmdArgs.push_back(Args.MakeArgString("-L" + GCCLibPath));
+ const ToolChain::path_list &Paths = getToolChain().getFilePaths();
+ for (const auto &Path : Paths)
+ CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + Path));
Args.AddAllArgs(CmdArgs, options::OPT_L);
Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
@@ -6811,9 +6791,9 @@ void solaris::Linker::ConstructJob(Compilation &C, const JobAction &JA,
if (!Args.hasArg(options::OPT_nostdlib) &&
!Args.hasArg(options::OPT_nostartfiles)) {
- CmdArgs.push_back(Args.MakeArgString(GCCLibPath + "crtend.o"));
+ CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
}
- CmdArgs.push_back(Args.MakeArgString(LibPath + "crtn.o"));
+ CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));
addProfileRT(getToolChain(), Args, CmdArgs);
--
2.4.3
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