build_command: Return a "cmake --build" command-line

Re-implement the build_command() command to use "cmake --build" instead
of generating a native build tool invocation directly.  This command
will internally invoke the proper native build tool.

This avoids requiring cmGlobalGenerator::GenerateBuildCommand to produce
a string so that it can be later refactored to produce a vector with no
quoting or escaping.  It will also allow us to later teach CMake to
delay the decision about which build tool to invoke until after the
project build system is generated to disk.  For example, on Visual
Studio 10 and above the preferred command-line tool is MSBuild, but we
need to fall back to devenv if the .sln has Intel Fortran .vfproj files.

1 files changed, 5 insertions, 5 deletions

diff --git a/Tests/RunCMake/CTest/BeforeProject-stderr.txt b/Tests/RunCMake/CTest/BeforeProject-stderr.txt
index 354896b..2d934a4 100644
--- a/Tests/RunCMake/CTest/BeforeProject-stderr.txt
+++ b/Tests/RunCMake/CTest/BeforeProject-stderr.txt
@@ -1,6 +1,6 @@
-CMake Error at .*/Modules/CTest.cmake:[0-9]+ \(build_command\):
-  build_command\(\) requires CMAKE_MAKE_PROGRAM to be defined.  Call project\(\)
-  or enable_language\(\) first.
+CMake Error at .*/Modules/CTestTargets.cmake:20 \(message\):
+  Do not include\(CTest\) before calling project\(\).
 Call Stack \(most recent call first\):
-  BeforeProject.cmake:[0-9]+ \(include\)
-  CMakeLists.txt:[0-9]+ \(include\)
+  .*/Modules/CTest.cmake:297 \(include\)
+  BeforeProject.cmake:1 \(include\)
+  CMakeLists.txt:5 \(include\)