glsl/tests/optimization-test: correctly manage srcdir/builddir

At the moment we look for generator script(s) in builddir while they
are in srcdir, and we proceed to generate the tests and expected output
in srcdir, which is not allowed.

To untangle:
 - look for the generator script in the correct place
 - generate the files in builddir, by extending create_test_cases.py to
use --outdir

With this in place the test passes `make check' for OOT builds - would
that be as standalone or part of `make distcheck'

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

src/compiler/glsl/tests/lower_jumps/create_test_cases.py

@@ -21,6 +21,7 @@
 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 # DEALINGS IN THE SOFTWARE.
 
+import argparse
 import os
 import os.path
 import re
@@ -30,6 +31,7 @@ import sys
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..')) # For access to sexps.py, which is in parent dir
 from sexps import *
 
+outdir = "."
 def make_test_case(f_name, ret_type, body):
     """Create a simple optimization test case consisting of a single
     function with the given name, return type, and body.
@@ -289,14 +291,14 @@ def create_test_case(doc_string, input_sexp, expected_sexp, test_name,
             pull_out_jumps, lower_sub_return, lower_main_return,
             lower_continue, lower_break))
     args = ['../../glsl_test', 'optpass', '--quiet', '--input-ir', optimization]
-    test_file = '{0}.opt_test'.format(test_name)
+    test_file = os.path.join(outdir, '{0}.opt_test'.format(test_name))
     with open(test_file, 'w') as f:
         f.write('#!/usr/bin/env bash\n#\n# This file was generated by create_test_cases.py.\n#\n')
         f.write(doc_string)
         f.write('{0} <<EOF\n'.format(bash_quote(*args)))
         f.write('{0}\nEOF\n'.format(input_str))
     os.chmod(test_file, 0774)
-    expected_file = '{0}.opt_test.expected'.format(test_name)
+    expected_file = os.path.join(outdir, '{0}.opt_test.expected'.format(test_name))
     with open(expected_file, 'w') as f:
         f.write('{0}\n'.format(expected_output))
 
@@ -623,6 +625,13 @@ def test_lower_return_non_void_at_end_of_loop():
                      lower_sub_return=True, lower_break=True)
 
 if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--outdir',
+                        help='Directory to put the generated files in',
+                        required=True)
+    args = parser.parse_args()
+    outdir = args.outdir
+
     test_lower_returns_main()
     test_lower_returns_sub()
     test_lower_returns_1()

src/compiler/glsl/tests/optimization-test.sh

@@ -28,13 +28,19 @@ compare_ir=$srcdir/glsl/tests/compare_ir.py
 total=0
 pass=0
 
+# Store our location before we start diving into subdirectories.
+ORIGDIR=`pwd`
 echo "======       Generating tests      ======"
-for dir in tests/*/; do
+for dir in $srcdir/glsl/tests/*/; do
     if [ -e "${dir}create_test_cases.py" ]; then
-        cd $dir; $PYTHON2 create_test_cases.py; cd ..
+        # construct the correct builddir
+        completedir="$abs_builddir/glsl/tests/`echo ${dir} | sed 's|.*/glsl/tests/||g'`"
+        mkdir -p $completedir
+        cd $dir; $PYTHON2 create_test_cases.py --outdir $completedir; cd ..
     fi
     echo "$dir"
 done
+cd "$ORIGDIR"
 
 if [ ! -f "$compare_ir" ]; then
     echo "Could not find compare_ir. Make sure that srcdir variable is correctly set."