Allow spack create to detect packages that need to run autoreconf (#2848)

lib/spack/spack/cmd/create.py

@@ -136,7 +136,8 @@ def write(self, pkg_path):
 
 
 class AutotoolsPackageTemplate(PackageTemplate):
-    """Provides appropriate overrides for Autotools-based packages"""
+    """Provides appropriate overrides for Autotools-based packages
+    that *do* come with a ``configure`` script"""
 
     base_class_name = 'AutotoolsPackage'
 
@@ -152,6 +153,33 @@ def configure_args(self):
         return args"""
 
 
+class AutoreconfPackageTemplate(PackageTemplate):
+    """Provides appropriate overrides for Autotools-based packages
+    that *do not* come with a ``configure`` script"""
+
+    base_class_name = 'AutotoolsPackage'
+
+    dependencies = """\
+    depends_on('autoconf', type='build')
+    depends_on('automake', type='build')
+    depends_on('libtool',  type='build')
+    depends_on('m4',       type='build')
+
+    # FIXME: Add additional dependencies if required.
+    # depends_on('foo')"""
+
+    body = """\
+    def autoreconf(self, spec, prefix):
+        # FIXME: Modify the autoreconf method as necessary
+        autoreconf('--install', '--verbose', '--force')
+
+    def configure_args(self):
+        # FIXME: Add arguments other than --prefix
+        # FIXME: If not needed delete this function
+        args = []
+        return args"""
+
+
 class CMakePackageTemplate(PackageTemplate):
     """Provides appropriate overrides for CMake-based packages"""
 
@@ -270,6 +298,7 @@ def __init__(self, name, *args):
 
 templates = {
     'autotools':  AutotoolsPackageTemplate,
+    'autoreconf': AutoreconfPackageTemplate,
     'cmake':      CMakePackageTemplate,
     'scons':      SconsPackageTemplate,
     'bazel':      BazelPackageTemplate,
@@ -327,6 +356,8 @@ def __call__(self, stage, url):
         # archive, the corresponding build system is assumed.
         clues = [
             (r'/configure$',         'autotools'),
+            (r'/configure.(in|ac)$', 'autoreconf'),
+            (r'/Makefile.am$',       'autoreconf'),
             (r'/CMakeLists.txt$',    'cmake'),
             (r'/SConstruct$',        'scons'),
             (r'/setup.py$',          'python'),
@@ -356,6 +387,7 @@ def __call__(self, stage, url):
         for pattern, bs in clues:
             if any(re.search(pattern, l) for l in lines):
                 build_system = bs
+                break
 
         self.build_system = build_system