Merge topic 'deb-on-windows'

52991413 CPackDeb: Enable the DEB generator on Windows

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !979

8 files changed, 92 insertions, 28 deletions

diff --git a/Help/release/dev/deb-on-windows.rst b/Help/release/dev/deb-on-windows.rst
new file mode 100644
index 0000000..b307720
--- /dev/null
+++ b/Help/release/dev/deb-on-windows.rst
@@ -0,0 +1,7 @@
+deb-on-windows
+--------------
+
+* The CPack ``DEB`` generator, configured by the :module:`CPackDeb` module,
+  was enabled on Windows.  While not fully featured (due to the lack of
+  external UNIX tools) this will allow building basic cross-platform Debian
+  packages.
diff --git a/Modules/CPackDeb.cmake b/Modules/CPackDeb.cmake
index ddf8b23..daba7d5 100644
--- a/Modules/CPackDeb.cmake
+++ b/Modules/CPackDeb.cmake
@@ -497,6 +497,16 @@
 #
 #    This value is not interpreted. It is possible to pass an optional
 #    revision number of the referenced source package as well.
+#
+# Building Debian packages on Windows
+# ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+#
+# To communicate UNIX file permissions from the install stage
+# to the CPack DEB generator the "cmake_mode_t" NTFS
+# alternate data stream (ADT) is used.
+#
+# When a filesystem without ADT support is used only owner read/write
+# permissions can be preserved.
 
 # CPack script for creating Debian package
 # Author: Mathieu Malaterre
@@ -507,10 +517,6 @@ if(CMAKE_BINARY_DIR)
   message(FATAL_ERROR "CPackDeb.cmake may only be used by CPack internally.")
 endif()
 
-if(NOT UNIX)
-  message(FATAL_ERROR "CPackDeb.cmake may only be used under UNIX.")
-endif()
-
 function(cpack_deb_variable_fallback OUTPUT_VAR_NAME)
   set(FALLBACK_VAR_NAMES ${ARGN})
 
diff --git a/Source/CMakeLists.txt b/Source/CMakeLists.txt
index 660d632..e556ca6 100644
--- a/Source/CMakeLists.txt
+++ b/Source/CMakeLists.txt
@@ -876,6 +876,7 @@ set(CPACK_SRCS
   CPack/cmCPackTarCompressGenerator.cxx
   CPack/cmCPackZIPGenerator.cxx
   CPack/cmCPack7zGenerator.cxx
+  CPack/cmCPackDebGenerator.cxx
   )
 # CPack IFW generator
 set(CPACK_SRCS ${CPACK_SRCS}
@@ -902,7 +903,6 @@ option(CPACK_ENABLE_FREEBSD_PKG "Add FreeBSD pkg(8) generator to CPack." OFF)
 
 if(UNIX)
   set(CPACK_SRCS ${CPACK_SRCS}
-    CPack/cmCPackDebGenerator.cxx
     CPack/cmCPackRPMGenerator.cxx
     )
 
diff --git a/Source/CPack/cmCPackDebGenerator.cxx b/Source/CPack/cmCPackDebGenerator.cxx
index af54fce..00d017e 100644
--- a/Source/CPack/cmCPackDebGenerator.cxx
+++ b/Source/CPack/cmCPackDebGenerator.cxx
@@ -479,6 +479,25 @@ int cmCPackDebGenerator::createDeb()
       cmCPackLogger(cmCPackLog::LOG_DEBUG, "RELATIVEDIR: \""
                       << relativeDir << "\"" << std::endl);
 
+#ifdef WIN32
+      std::string mode_t_adt_filename = *fileIt + ":cmake_mode_t";
+      cmsys::ifstream permissionStream(mode_t_adt_filename.c_str());
+
+      mode_t permissions = 0;
+
+      if (permissionStream) {
+        permissionStream >> std::oct >> permissions;
+      }
+
+      if (permissions != 0) {
+        data_tar.SetPermissions(permissions);
+      } else if (cmSystemTools::FileIsDirectory(*fileIt)) {
+        data_tar.SetPermissions(0755);
+      } else {
+        data_tar.ClearPermissions();
+      }
+#endif
+
       // do not recurse because the loop will do it
       if (!data_tar.Add(*fileIt, topLevelLength, ".", false)) {
         cmCPackLogger(cmCPackLog::LOG_ERROR, "Problem adding file to tar:"
@@ -553,8 +572,8 @@ int cmCPackDebGenerator::createDeb()
     and
     https://lintian.debian.org/tags/control-file-has-bad-permissions.html
     */
-    const mode_t permission644 = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
-    const mode_t permissionExecute = S_IXUSR | S_IXGRP | S_IXOTH;
+    const mode_t permission644 = 0644;
+    const mode_t permissionExecute = 0111;
     const mode_t permission755 = permission644 | permissionExecute;
 
     // for md5sum and control (that we have generated here), we use 644
@@ -831,7 +850,7 @@ static int copy_ar(CF* cfp, off_t size)
                        ? static_cast<size_t>(sz)
                        : sizeof(buf),
                      from)) > 0) {
-    sz -= nr;
+    sz -= static_cast<off_t>(nr);
     for (size_t off = 0; off < nr; nr -= off, off += nw) {
       if ((nw = fwrite(buf + off, 1, nr, to)) < nr) {
         return -1;
@@ -854,7 +873,6 @@ static int copy_ar(CF* cfp, off_t size)
 static int put_arobj(CF* cfp, struct stat* sb)
 {
   int result = 0;
-  struct ar_hdr* hdr;
 
   /* If passed an sb structure, reading a file from disk.  Get stat(2)
    * information, build a name and construct a header.  (Files are named
@@ -873,7 +891,7 @@ static int put_arobj(CF* cfp, struct stat* sb)
   if (gid > USHRT_MAX) {
     gid = USHRT_MAX;
   }
-  if (lname > sizeof(hdr->ar_name) || strchr(name, ' ')) {
+  if (lname > sizeof(ar_hdr().ar_name) || strchr(name, ' ')) {
     (void)sprintf(ar_hb, HDR1, AR_EFMT1, (int)lname, (long int)sb->st_mtime,
                   (unsigned)uid, (unsigned)gid, (unsigned)sb->st_mode,
                   (long long)sb->st_size + lname, ARFMAG);
diff --git a/Source/CPack/cmCPackGeneratorFactory.cxx b/Source/CPack/cmCPackGeneratorFactory.cxx
index f135059..834913d 100644
--- a/Source/CPack/cmCPackGeneratorFactory.cxx
+++ b/Source/CPack/cmCPackGeneratorFactory.cxx
@@ -12,6 +12,7 @@
 #ifdef HAVE_FREEBSD_PKG
 #include "cmCPackFreeBSDGenerator.h"
 #endif
+#include "cmCPackDebGenerator.h"
 #include "cmCPackGenerator.h"
 #include "cmCPackLog.h"
 #include "cmCPackNSISGenerator.h"
@@ -37,7 +38,6 @@
 
 #if !defined(_WIN32) && !defined(__QNXNTO__) && !defined(__BEOS__) &&         \
   !defined(__HAIKU__)
-#include "cmCPackDebGenerator.h"
 #include "cmCPackRPMGenerator.h"
 #endif
 
@@ -102,6 +102,10 @@ cmCPackGeneratorFactory::cmCPackGeneratorFactory()
     this->RegisterGenerator("TZ", "Tar Compress compression",
                             cmCPackTarCompressGenerator::CreateGenerator);
   }
+  if (cmCPackDebGenerator::CanGenerate()) {
+    this->RegisterGenerator("DEB", "Debian packages",
+                            cmCPackDebGenerator::CreateGenerator);
+  }
 #ifdef __APPLE__
   if (cmCPackDragNDropGenerator::CanGenerate()) {
     this->RegisterGenerator("DragNDrop", "Mac OSX Drag And Drop",
@@ -126,10 +130,6 @@ cmCPackGeneratorFactory::cmCPackGeneratorFactory()
 #endif
 #if !defined(_WIN32) && !defined(__QNXNTO__) && !defined(__BEOS__) &&         \
   !defined(__HAIKU__)
-  if (cmCPackDebGenerator::CanGenerate()) {
-    this->RegisterGenerator("DEB", "Debian packages",
-                            cmCPackDebGenerator::CreateGenerator);
-  }
   if (cmCPackRPMGenerator::CanGenerate()) {
     this->RegisterGenerator("RPM", "RPM packages",
                             cmCPackRPMGenerator::CreateGenerator);
diff --git a/Source/cmFileCommand.cxx b/Source/cmFileCommand.cxx
index 5777fb2..b769a56 100644
--- a/Source/cmFileCommand.cxx
+++ b/Source/cmFileCommand.cxx
@@ -55,14 +55,14 @@ class cmSystemToolsFileTime;
 static mode_t mode_owner_read = S_IREAD;
 static mode_t mode_owner_write = S_IWRITE;
 static mode_t mode_owner_execute = S_IEXEC;
-static mode_t mode_group_read = 0;
-static mode_t mode_group_write = 0;
-static mode_t mode_group_execute = 0;
-static mode_t mode_world_read = 0;
-static mode_t mode_world_write = 0;
-static mode_t mode_world_execute = 0;
-static mode_t mode_setuid = 0;
-static mode_t mode_setgid = 0;
+static mode_t mode_group_read = 040;
+static mode_t mode_group_write = 020;
+static mode_t mode_group_execute = 010;
+static mode_t mode_world_read = 04;
+static mode_t mode_world_write = 02;
+static mode_t mode_world_execute = 01;
+static mode_t mode_setuid = 04000;
+static mode_t mode_setgid = 02000;
 #else
 static mode_t mode_owner_read = S_IRUSR;
 static mode_t mode_owner_write = S_IWUSR;
@@ -1076,11 +1076,26 @@ protected:
 
   bool SetPermissions(const char* toFile, mode_t permissions)
   {
-    if (permissions && !cmSystemTools::SetPermissions(toFile, permissions)) {
-      std::ostringstream e;
-      e << this->Name << " cannot set permissions on \"" << toFile << "\"";
-      this->FileCommand->SetError(e.str());
-      return false;
+    if (permissions) {
+#ifdef WIN32
+      if (Makefile->IsOn("CMAKE_CROSSCOMPILING")) {
+        std::string mode_t_adt_filename =
+          std::string(toFile) + ":cmake_mode_t";
+
+        cmsys::ofstream permissionStream(mode_t_adt_filename.c_str());
+
+        if (permissionStream) {
+          permissionStream << std::oct << permissions << std::endl;
+        }
+      }
+#endif
+
+      if (!cmSystemTools::SetPermissions(toFile, permissions)) {
+        std::ostringstream e;
+        e << this->Name << " cannot set permissions on \"" << toFile << "\"";
+        this->FileCommand->SetError(e.str());
+        return false;
+      }
     }
     return true;
   }
diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index 8e00303..9049a42 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -451,6 +451,19 @@ void cmLocalGenerator::GenerateInstallRules()
     /* clang-format on */
   }
 
+  // Copy cmake cross compile state to install code.
+  if (const char* crosscompiling =
+        this->Makefile->GetDefinition("CMAKE_CROSSCOMPILING")) {
+    /* clang-format off */
+    fout <<
+      "# Is this installation the result of a crosscompile?\n"
+      "if(NOT DEFINED CMAKE_CROSSCOMPILING)\n"
+      "  set(CMAKE_CROSSCOMPILING \"" << crosscompiling << "\")\n"
+      "endif()\n"
+      "\n";
+    /* clang-format on */
+  }
+
   // Ask each install generator to write its code.
   std::vector<cmInstallGenerator*> const& installers =
     this->Makefile->GetInstallGenerators();
diff --git a/Source/cm_sys_stat.h b/Source/cm_sys_stat.h
index 26e4baa..796f027 100644
--- a/Source/cm_sys_stat.h
+++ b/Source/cm_sys_stat.h
@@ -7,6 +7,11 @@
 typedef unsigned short mode_t;
 #endif
 
+#if defined(WIN32)
+typedef unsigned short uid_t;
+typedef unsigned short gid_t;
+#endif
+
 #include <sys/types.h>
 // include sys/stat.h after sys/types.h
 #include <sys/stat.h>