4 files changed, 172 insertions, 0 deletions
diff --git a/debian/patches/hurd/D54677-hurd-path_max.diff b/debian/patches/hurd/D54677-hurd-path_max.diff
new file mode 100644
index 0000000..f0cafd1
--- /dev/null
+++ b/debian/patches/hurd/D54677-hurd-path_max.diff
@@ -0,0 +1,64 @@
+[hurd] Fix unconditional use of PATH_MAX
+
+The GNU/Hurd system does not define an arbitrary PATH_MAX limitation, the POSIX 2001 realpath extension can be used instead, and the size of symlinks can be determined.
+
+https://reviews.llvm.org/D54677
+
+Index: llvm-toolchain-7_7.0.1~svn347285/libcxx/src/filesystem/operations.cpp
+===================================================================
+--- llvm-toolchain-7_7.0.1~svn347285.orig/libcxx/src/filesystem/operations.cpp
++++ llvm-toolchain-7_7.0.1~svn347285/libcxx/src/filesystem/operations.cpp
+@@ -531,11 +531,20 @@ path __canonical(path const& orig_p, err
+   ErrorHandler<path> err("canonical", ec, &orig_p, &cwd);
+ 
+   path p = __do_absolute(orig_p, &cwd, ec);
++#if _POSIX_VERSION >= 200112 || defined(__GLIBC__)
++  char *buff;
++  if ((buff = ::realpath(p.c_str(), NULL)) == nullptr)
++    return err.report(capture_errno());
++  path ret = {buff};
++  free(buff);
++  return ret;
++#else
+   char buff[PATH_MAX + 1];
+   char* ret;
+   if ((ret = ::realpath(p.c_str(), buff)) == nullptr)
+     return err.report(capture_errno());
+   return {ret};
++#endif
+ }
+ 
+ void __copy(const path& from, const path& to, copy_options options,
+@@ -1077,16 +1086,27 @@ void __permissions(const path& p, perms
+ path __read_symlink(const path& p, error_code* ec) {
+   ErrorHandler<path> err("read_symlink", ec, &p);
+ 
+-  char buff[PATH_MAX + 1];
+-  error_code m_ec;
++  struct stat sb;
++  if (lstat(p.c_str(), &sb) == -1) {
++    return err.report(capture_errno());
++  }
++  size_t size = sb.st_size + 1;
++  char *buff = (char*) malloc(size);
++  if (buff == NULL) {
++    return err.report(capture_errno());
++  }
++
+   ::ssize_t ret;
+-  if ((ret = ::readlink(p.c_str(), buff, PATH_MAX)) == -1) {
++  if ((ret = ::readlink(p.c_str(), buff, size)) == -1) {
++    free(buff);
+     return err.report(capture_errno());
+   }
+-  _LIBCPP_ASSERT(ret <= PATH_MAX, "TODO");
++  _LIBCPP_ASSERT(ret < size, "TODO");
+   _LIBCPP_ASSERT(ret > 0, "TODO");
+   buff[ret] = 0;
+-  return {buff};
++  path res = {buff};
++  free(buff);
++  return res;
+ }
+ 
+ bool __remove(const path& p, error_code* ec) {
diff --git a/debian/patches/hurd/hurd-EIEIO-undef.diff b/debian/patches/hurd/hurd-EIEIO-undef.diff
new file mode 100644
index 0000000..3b98ad9
--- /dev/null
+++ b/debian/patches/hurd/hurd-EIEIO-undef.diff
@@ -0,0 +1,14 @@
+Index: llvm-toolchain-snapshot_3.9~svn268880/utils/TableGen/CodeEmitterGen.cpp
+===================================================================
+--- llvm-toolchain-snapshot_3.9~svn268880.orig/utils/TableGen/CodeEmitterGen.cpp
++++ llvm-toolchain-snapshot_3.9~svn268880/utils/TableGen/CodeEmitterGen.cpp
+@@ -229,6 +229,9 @@ void CodeEmitterGen::run(raw_ostream &o)
+   ArrayRef<const CodeGenInstruction*> NumberedInstructions =
+     Target.getInstructionsByEnumValue();
+ 
++  o << "// Undef for HURD\n";
++  o << "#ifdef EIEIO\n#undef EIEIO\n#endif\n";
++
+   // Emit function declaration
+   o << "uint64_t " << Target.getName();
+   o << "MCCodeEmitter::getBinaryCodeForInstr(const MCInst &MI,\n"
diff --git a/debian/patches/hurd/hurd-pathmax.diff b/debian/patches/hurd/hurd-pathmax.diff
new file mode 100644
index 0000000..d9ba159
--- /dev/null
+++ b/debian/patches/hurd/hurd-pathmax.diff
@@ -0,0 +1,81 @@
+Index: llvm-toolchain-8_8~svn353935/clang/lib/Basic/FileManager.cpp
+===================================================================
+--- llvm-toolchain-8_8~svn353935.orig/clang/lib/Basic/FileManager.cpp
++++ llvm-toolchain-8_8~svn353935/clang/lib/Basic/FileManager.cpp
+@@ -483,6 +483,12 @@ void FileManager::invalidateCache(const
+   UniqueRealFiles.erase(Entry->getUniqueID());
+ }
+ 
++// For GNU Hurd
++#if defined(__GNU__) && !defined(PATH_MAX)
++# define PATH_MAX 4096
++#endif
++
++
+ void FileManager::GetUniqueIDMapping(
+                    SmallVectorImpl<const FileEntry *> &UIDToFiles) const {
+   UIDToFiles.clear();
+Index: llvm-toolchain-8_8~svn353935/lldb/include/lldb/lldb-defines.h
+===================================================================
+--- llvm-toolchain-8_8~svn353935.orig/lldb/include/lldb/lldb-defines.h
++++ llvm-toolchain-8_8~svn353935/lldb/include/lldb/lldb-defines.h
+@@ -28,6 +28,11 @@
+ #define INT32_MAX 2147483647
+ #endif
+ 
++// For GNU Hurd
++#if defined(__GNU__) && !defined(PATH_MAX)
++# define PATH_MAX 4096
++#endif
++
+ #if !defined(UINT32_MAX)
+ #define UINT32_MAX 4294967295U
+ #endif
+Index: llvm-toolchain-8_8~svn353935/tools/dsymutil/DwarfLinker.cpp
+===================================================================
+--- llvm-toolchain-8_8~svn353935.orig/tools/dsymutil/DwarfLinker.cpp
++++ llvm-toolchain-8_8~svn353935/tools/dsymutil/DwarfLinker.cpp
+@@ -101,6 +101,11 @@
+ #include <utility>
+ #include <vector>
+ 
++// For GNU Hurd
++#if defined(__GNU__) && !defined(PATH_MAX)
++# define PATH_MAX 4096
++#endif
++
+ namespace llvm {
+ namespace dsymutil {
+ 
+Index: llvm-toolchain-8_8~svn353935/polly/lib/External/ppcg/cuda_common.c
+===================================================================
+--- llvm-toolchain-8_8~svn353935.orig/polly/lib/External/ppcg/cuda_common.c
++++ llvm-toolchain-8_8~svn353935/polly/lib/External/ppcg/cuda_common.c
+@@ -15,6 +15,11 @@
+ #include "cuda_common.h"
+ #include "ppcg.h"
+ 
++// For GNU Hurd
++#if defined(__GNU__) && !defined(PATH_MAX)
++# define PATH_MAX 4096
++#endif
++
+ /* Open the host .cu file and the kernel .hu and .cu files for writing.
+  * Add the necessary includes.
+  */
+Index: llvm-toolchain-8_8~svn353935/clang/lib/Frontend/ModuleDependencyCollector.cpp
+===================================================================
+--- llvm-toolchain-8_8~svn353935.orig/clang/lib/Frontend/ModuleDependencyCollector.cpp
++++ llvm-toolchain-8_8~svn353935/clang/lib/Frontend/ModuleDependencyCollector.cpp
+@@ -99,6 +99,11 @@ struct ModuleDependencyMMCallbacks : pub
+ 
+ }
+ 
++// For GNU Hurd
++#if defined(__GNU__) && !defined(PATH_MAX)
++# define PATH_MAX 4096
++#endif
++
+ // TODO: move this to Support/Path.h and check for HAVE_REALPATH?
+ static bool real_path(StringRef SrcPath, SmallVectorImpl<char> &RealPath) {
+ #ifdef LLVM_ON_UNIX
diff --git a/debian/patches/hurd/impl-path-hurd.diff b/debian/patches/hurd/impl-path-hurd.diff
new file mode 100644
index 0000000..4d7b7a6
--- /dev/null
+++ b/debian/patches/hurd/impl-path-hurd.diff
@@ -0,0 +1,13 @@
+Index: llvm-toolchain-snapshot_7~svn334230/lib/Support/Unix/Path.inc
+===================================================================
+--- llvm-toolchain-snapshot_7~svn334230.orig/lib/Support/Unix/Path.inc
++++ llvm-toolchain-snapshot_7~svn334230/lib/Support/Unix/Path.inc
+@@ -175,7 +175,7 @@ std::string getMainExecutable(const char
+ 
+   if (getprogpath(exe_path, argv0) != NULL)
+     return exe_path;
+-#elif defined(__linux__) || defined(__CYGWIN__)
++#elif defined(__linux__) || defined(__CYGWIN__) || defined(__GNU__)
+   char exe_path[MAXPATHLEN];
+   StringRef aPath("/proc/self/exe");
+   if (sys::fs::exists(aPath)) {