Added new default tau version: 2.29. Added explicit zlib build requir… (#15010)

* Added new default tau version: 2.29. Added explicit zlib build requirement. Set up environment to use use elf and libz

* Changed zlib to link dependency. Removed elf library path load (wasn't able to reproduce the need for this)

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

@@ -23,6 +23,7 @@ class Tau(Package):
     git      = "https://github.com/UO-OACISS/tau2"
 
     version('develop', branch='master')
+    version('2.29', sha256='146be769a23c869a7935e8fa5ba79f40ba36b9057a96dda3be6730fc9ca86086')
     version('2.28.2', sha256='64e129a482056755012b91dae2fb4f728dbf3adbab53d49187eca952891c5457')
     version('2.28.1', sha256='b262e5c9977471e9f5a8d729b3db743012df9b0ab8244da2842039f8a3b98b34')
     version('2.28', sha256='68c6f13ae748d12c921456e494006796ca2b0efebdeef76ee7c898c81592883e')
@@ -75,6 +76,7 @@ class Tau(Package):
     variant('ppc64le', default=False, description='Build for IBM Power LE nodes')
     variant('x86_64', default=False, description='Force build for x86 Linux instead of auto-detect')
 
+    depends_on('zlib', type='link')
     depends_on('pdt', when='+pdt')  # Required for TAU instrumentation
     depends_on('scorep', when='+scorep')
     depends_on('otf2@2.1:', when='+otf2')
@@ -131,6 +133,9 @@ def set_compiler_options(self, spec):
         compiler_options.append(useropt)
         return compiler_options
 
+    def setup_build_environment(self, env):
+        env.prepend_path('LIBRARY_PATH', self.spec['zlib'].prefix.lib)
+
     def install(self, spec, prefix):
         # TAU isn't happy with directories that have '@' in the path.  Sigh.
         change_sed_delimiter('@', ';', 'configure')