r361429 - Add back --sysroot support for darwin header search.
James Y Knight via cfe-commits
cfe-commits at lists.llvm.org
Wed May 22 13:39:52 PDT 2019
Author: jyknight
Date: Wed May 22 13:39:51 2019
New Revision: 361429
URL: http://llvm.org/viewvc/llvm-project?rev=361429&view=rev
Log:
Add back --sysroot support for darwin header search.
Before e97b5f5cf37e ([clang][Darwin] Refactor header search path logic
into the driver), both --sysroot and -isysroot worked to specify where
to look for system and C++ headers on Darwin. However, that change
caused clang to start ignoring --sysroot.
This fixes the regression, and adds tests.
(I also note that on all other platforms, clang seems to almost
completely ignore -isysroot, but that's another issue...)
Differential Revision: https://reviews.llvm.org/D62268
Modified:
cfe/trunk/lib/Driver/ToolChains/Darwin.cpp
cfe/trunk/lib/Driver/ToolChains/Darwin.h
cfe/trunk/test/Driver/darwin-header-search-libcxx.cpp
cfe/trunk/test/Driver/darwin-header-search-system.cpp
Modified: cfe/trunk/lib/Driver/ToolChains/Darwin.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/Darwin.cpp?rev=361429&r1=361428&r2=361429&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains/Darwin.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChains/Darwin.cpp Wed May 22 13:39:51 2019
@@ -1805,13 +1805,21 @@ void Darwin::AddDeploymentTarget(Derived
}
}
+// Returns the effective header sysroot path to use. This comes either from
+// -isysroot or --sysroot.
+llvm::StringRef DarwinClang::GetHeaderSysroot(const llvm::opt::ArgList &DriverArgs) const {
+ if(DriverArgs.hasArg(options::OPT_isysroot))
+ return DriverArgs.getLastArgValue(options::OPT_isysroot);
+ if (!getDriver().SysRoot.empty())
+ return getDriver().SysRoot;
+ return "/";
+}
+
void DarwinClang::AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args) const {
const Driver &D = getDriver();
- llvm::StringRef Sysroot = "/";
- if (const Arg *A = DriverArgs.getLastArg(options::OPT_isysroot))
- Sysroot = A->getValue();
+ llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
bool NoStdInc = DriverArgs.hasArg(options::OPT_nostdinc);
bool NoStdlibInc = DriverArgs.hasArg(options::OPT_nostdlibinc);
@@ -1897,12 +1905,7 @@ void DarwinClang::AddClangCXXStdlibInclu
DriverArgs.hasArg(options::OPT_nostdincxx))
return;
- llvm::SmallString<128> Sysroot;
- if (const Arg *A = DriverArgs.getLastArg(options::OPT_isysroot)) {
- Sysroot = A->getValue();
- } else {
- Sysroot = "/";
- }
+ llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
switch (GetCXXStdlibType(DriverArgs)) {
case ToolChain::CST_Libcxx: {
Modified: cfe/trunk/lib/Driver/ToolChains/Darwin.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/Darwin.h?rev=361429&r1=361428&r2=361429&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains/Darwin.h (original)
+++ cfe/trunk/lib/Driver/ToolChains/Darwin.h Wed May 22 13:39:51 2019
@@ -539,6 +539,8 @@ private:
llvm::StringRef Version,
llvm::StringRef ArchDir,
llvm::StringRef BitDir) const;
+
+ llvm::StringRef GetHeaderSysroot(const llvm::opt::ArgList &DriverArgs) const;
};
} // end namespace toolchains
Modified: cfe/trunk/test/Driver/darwin-header-search-libcxx.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/darwin-header-search-libcxx.cpp?rev=361429&r1=361428&r2=361429&view=diff
==============================================================================
--- cfe/trunk/test/Driver/darwin-header-search-libcxx.cpp (original)
+++ cfe/trunk/test/Driver/darwin-header-search-libcxx.cpp Wed May 22 13:39:51 2019
@@ -36,6 +36,7 @@
// Check with both headers in the sysroot and headers alongside the installation
// (the headers in <sysroot> should be added after the toolchain headers).
+// Ensure that both -isysroot and --sysroot work, and that isysroot has precedence.
//
// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
// RUN: -target x86_64-apple-darwin \
@@ -46,6 +47,28 @@
// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr \
// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
// RUN: --check-prefix=CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1 %s
+//
+// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
+// RUN: -target x86_64-apple-darwin \
+// RUN: -stdlib=libc++ \
+// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
+// RUN: -resource-dir=%S/Inputs/resource_dir \
+// RUN: --sysroot %S/Inputs/basic_darwin_sdk_usr \
+// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr \
+// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
+// RUN: --check-prefix=CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1 %s
+//
+// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
+// RUN: -target x86_64-apple-darwin \
+// RUN: -stdlib=libc++ \
+// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
+// RUN: -resource-dir=%S/Inputs/resource_dir \
+// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr \
+// RUN: --sysroot %S/Inputs/basic_darwin_sdk_no_libcxx \
+// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr \
+// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
+// RUN: --check-prefix=CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1 %s
+//
// CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
// CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
// CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
Modified: cfe/trunk/test/Driver/darwin-header-search-system.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/darwin-header-search-system.cpp?rev=361429&r1=361428&r2=361429&view=diff
==============================================================================
--- cfe/trunk/test/Driver/darwin-header-search-system.cpp (original)
+++ cfe/trunk/test/Driver/darwin-header-search-system.cpp Wed May 22 13:39:51 2019
@@ -3,7 +3,8 @@
// General tests that the system header search paths detected by the driver
// and passed to CC1 are correct on Darwin platforms.
-// Check system headers (everything below <sysroot> and <resource-dir>)
+// Check system headers (everything below <sysroot> and <resource-dir>). Ensure
+// that both sysroot and isysroot are checked, and that isysroot has precedence.
//
// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
// RUN: -target x86_64-apple-darwin \
@@ -13,6 +14,26 @@
// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_and_usr_local \
// RUN: -DRESOURCE=%S/Inputs/resource_dir \
// RUN: --check-prefix=CHECK-SYSTEM %s
+//
+// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
+// RUN: -target x86_64-apple-darwin \
+// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
+// RUN: -resource-dir=%S/Inputs/resource_dir \
+// RUN: --sysroot %S/Inputs/basic_darwin_sdk_usr_and_usr_local \
+// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_and_usr_local \
+// RUN: -DRESOURCE=%S/Inputs/resource_dir \
+// RUN: --check-prefix=CHECK-SYSTEM %s
+//
+// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
+// RUN: -target x86_64-apple-darwin \
+// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
+// RUN: -resource-dir=%S/Inputs/resource_dir \
+// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr_and_usr_local \
+// RUN: --sysroot / \
+// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_and_usr_local \
+// RUN: -DRESOURCE=%S/Inputs/resource_dir \
+// RUN: --check-prefix=CHECK-SYSTEM %s
+//
// CHECK-SYSTEM: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
// CHECK-SYSTEM: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-SYSTEM: "-internal-isystem" "[[RESOURCE]]/include"
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