Don't search installation prefix if binary is not found

It is possible that the binary isn't accessible (e.g. Cray launcher) and it
is not valid to call isEquivalent if the path is invalid.

Change-Id: Idf82a8c951fdc91a2de15d310843d54961ba74eb

diff --git a/src/gromacs/commandline/cmdlineprogramcontext.cpp b/src/gromacs/commandline/cmdlineprogramcontext.cpp
index 9368e3c9251bbd8728ceefc4784a0c64588f5373..084646698075d800cde85b2baf79ac1358f974b0 100644 (file)
--- a/src/gromacs/commandline/cmdlineprogramcontext.cpp
+++ b/src/gromacs/commandline/cmdlineprogramcontext.cpp
@@ -243,9 +243,8 @@ std::string findInstallationPrefixPath(const std::string &binaryPath,
                                        bool              *bSourceLayout)
 {
     *bSourceLayout = false;
-    // If the input path is not absolute, the binary could not be found.
-    // Don't search anything.
-    if (Path::isAbsolute(binaryPath))
+    // Don't search anything if binary cannot be found.
+    if (Path::exists(binaryPath))
     {
         // Remove the executable name.
         std::string searchPath = Path::getParentPath(binaryPath);