Change path to CMakeLists.txt to be relative to root, not pwd (#4420)

* Change path to CMakeLists.txt to be relative to root, not pwd

* Changes requested during code review

* Revert back to old naming of root_cmakelists_dir
* Make relative directory more clear in docs

* Revert change causing build_type AttributeError

* Fix forgotten abs_path var

* Update CLHEP with new relative path

* Update more packages with new root_cmakelists_dir syntax

var/spack/repos/builtin/packages/bcl2fastq2/package.py

@@ -59,7 +59,7 @@ class Bcl2fastq2(Package):
     # libexslt bits.
     patch('cxxConfigure-cmake.patch')
 
-    root_cmakelists_dir = '../src'
+    root_cmakelists_dir = 'src'
 
     def url_for_version(self, version):
         url = "https://support.illumina.com/content/dam/illumina-support/documents/downloads/software/bcl2fastq/bcl2fastq2-v{0}-tar.zip"

var/spack/repos/builtin/packages/clfft/package.py

@@ -31,10 +31,6 @@ class Clfft(CMakePackage):
     homepage = "https://github.com/clMathLibraries/clFFT"
     url      = "https://github.com/clMathLibraries/clFFT/archive/v2.12.2.tar.gz"
 
-    @property
-    def root_cmakelists_dir(self):
-        return join_path(self.stage.source_path, 'src')
-
     version('2.12.2', '9104d85f9f2f3c58dd8efc0e4b06496f')
 
     variant('client', default=True,
@@ -43,6 +39,8 @@ def root_cmakelists_dir(self):
     depends_on('opencl@1.2:')
     depends_on('boost@1.33.0:', when='+client')
 
+    root_cmakelists_dir = 'src'
+
     def cmake_args(self):
         spec = self.spec
 

var/spack/repos/builtin/packages/clhep/package.py

@@ -63,7 +63,7 @@ def patch(self):
                     '%s/%s/CLHEP/CMakeLists.txt'
                     % (self.stage.path, self.spec.version))
 
-    root_cmakelists_dir = '../CLHEP'
+    root_cmakelists_dir = 'CLHEP'
 
     def build_type(self):
         spec = self.spec

var/spack/repos/builtin/packages/cpprestsdk/package.py

@@ -38,4 +38,4 @@ class Cpprestsdk(CMakePackage):
 
     depends_on('boost')
 
-    root_cmakelists_dir = '../Release'
+    root_cmakelists_dir = 'Release'

var/spack/repos/builtin/packages/isaac-server/package.py

@@ -31,10 +31,6 @@ class IsaacServer(CMakePackage):
     homepage = "http://computationalradiationphysics.github.io/isaac/"
     url      = "https://github.com/ComputationalRadiationPhysics/isaac/archive/v1.3.0.tar.gz"
 
-    @property
-    def root_cmakelists_dir(self):
-        return join_path(self.stage.source_path, 'server')
-
     version('develop', branch='dev',
             git='https://github.com/ComputationalRadiationPhysics/isaac.git')
     version('master', branch='master',
@@ -51,3 +47,5 @@ def root_cmakelists_dir(self):
     depends_on('boost@1.56:', type='link')
     depends_on('libwebsockets@2.1.1:', type='link')
     # depends_on('gstreamer@1.0', when='+gstreamer')
+
+    root_cmakelists_dir = 'server'

var/spack/repos/builtin/packages/isaac/package.py

@@ -31,10 +31,6 @@ class Isaac(CMakePackage):
     homepage = "http://computationalradiationphysics.github.io/isaac/"
     url      = "https://github.com/ComputationalRadiationPhysics/isaac/archive/v1.3.0.tar.gz"
 
-    @property
-    def root_cmakelists_dir(self):
-        return join_path(self.stage.source_path, 'lib')
-
     version('develop', branch='dev',
             git='https://github.com/ComputationalRadiationPhysics/isaac.git')
     version('master', branch='master',
@@ -55,3 +51,5 @@ def root_cmakelists_dir(self):
     # depends_on('alpaka', when='+alpaka')
     depends_on('icet', type='link')
     depends_on('mpi', type='link')
+
+    root_cmakelists_dir = 'lib'

var/spack/repos/builtin/packages/quinoa/package.py

@@ -55,7 +55,7 @@ class Quinoa(CMakePackage):
     depends_on("pstreams")
     depends_on("pegtl")
 
-    root_cmakelists_dir = '../src'
+    root_cmakelists_dir = 'src'
 
     def build_type(self):
         spec = self.spec

var/spack/repos/builtin/packages/spades/package.py

@@ -40,6 +40,4 @@ class Spades(CMakePackage):
 
     conflicts('%gcc@7.1.0:')
 
-    @property
-    def root_cmakelists_dir(self):
-        return join_path(self.stage.source_path, 'src')
+    root_cmakelists_dir = 'src'