Add filename to text_to_relocate only if it needs to be relocated (#31074)

Scan the text files for relocatable prefixes *before* creating a tarball,
to reduce the amount of work to be done during install from binary
cache. 

Co-authored-by: Harmen Stoppels <harmenstoppels@gmail.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/var/spack/repos/builtin.mock/packages/needs-text-relocation/package.py b/var/spack/repos/builtin.mock/packages/needs-text-relocation/package.py
new file mode 100644
index 0000000000..9b2654dd83
--- /dev/null
+++ b/var/spack/repos/builtin.mock/packages/needs-text-relocation/package.py
@@ -0,0 +1,27 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+from spack.package import *
+
+
+class NeedsTextRelocation(Package):
+    """A dumy package that encodes its prefix."""
+
+    homepage = "https://www.cmake.org"
+    url = "https://cmake.org/files/v3.4/cmake-3.4.3.tar.gz"
+
+    version("0.0.0", "12345678qwertyuiasdfghjkzxcvbnm0")
+
+    def install(self, spec, prefix):
+        mkdirp(prefix.bin)
+
+        exe = join_path(prefix.bin, "exe")
+        with open(exe, "w") as f:
+            f.write(prefix)
+        set_executable(exe)
+
+        otherexe = join_path(prefix.bin, "otherexe")
+        with open(otherexe, "w") as f:
+            f.write("Lorem Ipsum")
+        set_executable(otherexe)