[lit] Use a %{python} substitution to avoid relying on python being on PATH

llvm-svn: 309434

llvm/utils/lit/tests/Inputs/max-failures/lit.cfg

@@ -1,6 +1,2 @@
-import lit.formats
-config.name = 'shtest-shell'
-config.suffixes = ['.txt']
-config.test_format = lit.formats.ShTest()
+lit_config.load_config(config, os.path.dirname(__file__) + "/../shtest-shell/lit.cfg")
 config.test_source_root = os.path.dirname(__file__) + '/../shtest-shell'
-config.test_exec_root = None

llvm/utils/lit/tests/Inputs/shtest-format/external_shell/fail_with_bad_encoding.txt

@@ -1,5 +1,5 @@
 # Run a command that fails with error on stdout.
 #
-# RUN: python %S/write-bad-encoding.py
+# RUN: "%{python}" %S/write-bad-encoding.py
 # RUN: false
 

llvm/utils/lit/tests/Inputs/shtest-format/lit.cfg

@@ -6,3 +6,4 @@ config.test_source_root = None
 config.test_exec_root = None
 config.target_triple = 'x86_64-unknown-unknown'
 config.available_features.add('a-present-feature')
+config.substitutions.append(('%{python}', sys.executable))

llvm/utils/lit/tests/Inputs/shtest-shell/lit.cfg

@@ -4,3 +4,4 @@ config.suffixes = ['.txt']
 config.test_format = lit.formats.ShTest()
 config.test_source_root = None
 config.test_exec_root = None
+config.substitutions.append(('%{python}', sys.executable))

llvm/utils/lit/tests/Inputs/shtest-shell/redirects.txt

@@ -17,13 +17,13 @@
 # Check stderr redirect (2> and 2>>).
 #
 # RUN: echo "not-present" > %t.stderr-write
-# RUN: python %S/write-to-stderr.py 2> %t.stderr-write
+# RUN: "%{python}" %S/write-to-stderr.py 2> %t.stderr-write
 # RUN: FileCheck --check-prefix=STDERR-WRITE < %t.stderr-write %s
 #
 # STDERR-WRITE-NOT: not-present
 # STDERR-WRITE: a line on stderr
 #
-# RUN: python %S/write-to-stderr.py 2>> %t.stderr-write
+# RUN: "%{python}" %S/write-to-stderr.py 2>> %t.stderr-write
 # RUN: FileCheck --check-prefix=STDERR-APPEND < %t.stderr-write %s
 #
 # STDERR-APPEND: a line on stderr
@@ -33,7 +33,7 @@
 # Check combined redirect (&>).
 #
 # RUN: echo "not-present" > %t.combined
-# RUN: python %S/write-to-stdout-and-stderr.py &> %t.combined
+# RUN: "%{python}" %S/write-to-stdout-and-stderr.py &> %t.combined
 # RUN: FileCheck --check-prefix=COMBINED-WRITE < %t.combined %s
 #
 # COMBINED-WRITE-NOT: not-present