move get_library into shared

1 files changed, 60 insertions, 0 deletions

diff --git a/tools/shared.py b/tools/shared.py
index c0cc6f21..9b2dee70 100644
--- a/tools/shared.py
+++ b/tools/shared.py
@@ -214,3 +214,63 @@ Settings = Dummy() # A global singleton. Not pretty, but nicer than passing |, s
 Settings.save_dir = 0
 Settings.save_JS = 0
 
+# Building
+
+COMPILER = CLANG
+LLVM_OPTS = False
+COMPILER_TEST_OPTS = []
+
+GlobalCache = {}
+
+def get_library(name, build_dir, output_dir, generated_libs, configure=['./configure'], configure_args=[], make=['make'], make_args=['-j', '2'], cache=True, build_subdir=None):
+  ''' Build a library into a .bc file. We build the .bc file once and cache it for all our tests. (We cache in
+      memory since the test directory is destroyed and recreated for each test. Note that we cache separately
+      for different compilers) '''
+
+  if type(generated_libs) is not list: generated_libs = [generated_libs]
+  if build_subdir and configure.startswith('./'):
+    configure = '.' + configure
+
+  if GlobalCache is not None:
+    cache_name = name + '|' + COMPILER
+    if cache and GlobalCache.get(cache_name):
+      print >> sys.stderr,  '<load build from cache> ',
+      bc_file = os.path.join(output_dir, 'lib' + name + '.bc')
+      f = open(bc_file, 'wb')
+      f.write(GlobalCache[cache_name])
+      f.close()
+      return bc_file
+
+  temp_dir = build_dir
+  project_dir = os.path.join(temp_dir, name)
+  shutil.copytree(path_from_root('tests', name), project_dir) # Useful in debugging sometimes to comment this out
+  os.chdir(project_dir)
+  if build_subdir:
+    try:
+      os.mkdir('cbuild')
+    except:
+      pass
+    os.chdir(os.path.join(project_dir, 'cbuild'))
+  env = os.environ.copy()
+  env['RANLIB'] = env['AR'] = env['CXX'] = env['CC'] = env['LIBTOOL'] = EMMAKEN
+  env['EMMAKEN_COMPILER'] = COMPILER
+  env['EMSCRIPTEN_TOOLS'] = path_from_root('tools')
+  env['CFLAGS'] = env['EMMAKEN_CFLAGS'] = ' '.join(COMPILER_OPTS + COMPILER_TEST_OPTS) # Normal CFLAGS is ignored by some configure's.
+  if configure: # Useful in debugging sometimes to comment this out (and the lines below up to and including the |make| call)
+    env['EMMAKEN_JUST_CONFIGURE'] = '1'
+    Popen(configure + configure_args, stdout=open(os.path.join(output_dir, 'configure'), 'w'),
+                                      stderr=open(os.path.join(output_dir, 'configure_err'), 'w'), env=env).communicate()[0]
+    del env['EMMAKEN_JUST_CONFIGURE']
+  Popen(make + make_args, stdout=open(os.path.join(output_dir, 'make'), 'w'),
+                          stderr=open(os.path.join(output_dir, 'make_err'), 'w'), env=env).communicate()[0]
+  bc_file = os.path.join(project_dir, 'bc.bc')
+  do_link(map(lambda lib: os.path.join(project_dir, 'cbuild', lib) if build_subdir else os.path.join(project_dir, lib), generated_libs), bc_file)
+  if cache and GlobalCache is not None:
+    print >> sys.stderr, '<save build into cache> ',
+    GlobalCache[cache_name] = open(bc_file, 'rb').read()
+  return bc_file
+
+def do_link(files, target):
+  output = Popen([LLVM_LINK] + files + ['-o', target], stdout=PIPE, stderr=STDOUT).communicate()[0]
+  assert output is None or 'Could not open input file' not in output, 'Linking error: ' + output
+