use sys.exit() instead of the removed error() function

lib/Install.py

@@ -53,7 +53,7 @@ lib = os.path.basename(cwd)
 # reset EXTRAMAKE if requested
 
 if not os.path.exists("Makefile.%s" % machine):
-  error("lib/%s/Makefile.%s does not exist" % (lib,machine))
+  sys.exit("lib/%s/Makefile.%s does not exist" % (lib,machine))
 
 lines = open("Makefile.%s" % machine,'r').readlines()
 fp = open("Makefile.auto",'w')
@@ -82,7 +82,7 @@ except subprocess.CalledProcessError as e:
   sys.exit(1)
 
 if os.path.exists("lib%s.a" % lib): print("Build was successful")
-else: error("Build of lib/%s/lib%s.a was NOT successful" % (lib,lib))
+else: sys.exit("Build of lib/%s/lib%s.a was NOT successful" % (lib,lib))
 
 if has_extramake and not os.path.exists("Makefile.lammps"):
   print("WARNING: lib/%s/Makefile.lammps was NOT created" % lib)

lib/gpu/Install.py

@@ -89,7 +89,7 @@ if args.output:
 # reset EXTRAMAKE, CUDA_HOME, CUDA_ARCH, CUDA_PRECISION if requested
 
 if not os.path.exists("Makefile.%s" % isuffix):
-  error("lib/gpu/Makefile.%s does not exist" % isuffix)
+  sys.exit("lib/gpu/Makefile.%s does not exist" % isuffix)
 
 lines = open("Makefile.%s" % isuffix,'r').readlines()
 fp = open("Makefile.auto",'w')
@@ -129,9 +129,9 @@ if makeflag:
     sys.exit(1)
 
   if not os.path.exists("libgpu.a"):
-    error("Build of lib/gpu/libgpu.a was NOT successful")
+    sys.exit("Build of lib/gpu/libgpu.a was NOT successful")
   if not os.path.exists("Makefile.lammps"):
-    error("lib/gpu/Makefile.lammps was NOT created")
+    sys.exit("lib/gpu/Makefile.lammps was NOT created")
 
 # copy new Makefile.auto to Makefile.osuffix
 

lib/mscg/Install.py

@@ -73,8 +73,9 @@ homepath = fullpath('.')
 homedir = "%s/%s" % (homepath,tardir)
 
 if (pathflag):
-    if not os.path.isdir(mscgpath): error("MS-CG path does not exist")
+    if not os.path.isdir(mscgpath):
-    homedir = mscgpath
+      sys.exit("MS-CG path %s does not exist" % mscgpath)
+    homedir = fullpath(mscgpath)
 
 # download and unpack MS-CG tarfile
 
@@ -104,7 +105,7 @@ if buildflag:
     cmd = 'cd "%s/src"; cp ../../Makefile.%s .; make -f Makefile.%s' % \
         (homedir,msuffix,msuffix)
   else:
-    error("Cannot find Makefile.%s" % msuffix)
+    sys.exit("Cannot find Makefile.%s" % msuffix)
   try:
     txt = subprocess.check_output(cmd,stderr=subprocess.STDOUT,shell=True)
     print(txt.decode('UTF-8'))

lib/plumed/Install.py

@@ -68,8 +68,9 @@ homepath = fullpath('.')
 homedir = "%s/plumed2" % (homepath)
 
 if (pathflag):
-    if not os.path.isdir(plumedpath): error("Plumed2 path does not exist")
+    if not os.path.isdir(plumedpath):
-    homedir = plumedpath
+      sys.exit("Plumed2 path %s does not exist" % plumedpath)
+    homedir = fullpath(plumedpath)
 
 # download and unpack plumed2 tarball
 
@@ -82,7 +83,7 @@ if buildflag:
   # verify downloaded archive integrity via md5 checksum, if known.
   if version in checksums:
     if not checkmd5sum(checksums[version],filename):
-      error("Checksum for plumed2 library does not match")
+      sys.exit("Checksum for plumed2 library does not match")
 
   print("Unpacking plumed2 source tarball ...")
   if os.path.exists("%s/plumed-%s" % (homepath,version)):

lib/voronoi/Install.py

@@ -59,7 +59,8 @@ homepath = fullpath(".")
 homedir = "%s/%s" % (homepath,version)
 
 if (pathflag):
-    if not os.path.isdir(voropath): error("Voro++ path does not exist")
+    if not os.path.isdir(voropath):
+      sys.exit("Voro++ path %s does not exist" % voropath)
     homedir = voropath
 
 # download and unpack Voro++ tarball