scons: Expose convienience libraries to the host environment.

This fixes MinGW cross compilation build, recently broken due to the use
of convenience libraries in the GLSL preprocessor.

4 files changed, 203 insertions, 218 deletions

diff --git a/SConstruct b/SConstruct
index 8e063e2807..0a545d5c92 100644
--- a/SConstruct
+++ b/SConstruct
@@ -166,11 +166,14 @@ if env['platform'] != common.default_platform:
     host_env = Environment(
         # options are ignored
         # default tool is used
+        tools = ['default', 'custom'],
         toolpath = ['#scons'],	
         ENV = os.environ,
     )
 
     host_env['platform'] = common.default_platform
+    host_env['machine'] = common.default_machine
+    host_env['debug'] = env['debug']
 
     SConscript(
         'src/glsl/SConscript',
diff --git a/scons/custom.py b/scons/custom.py
new file mode 100644
index 0000000000..e9c90d0999
--- /dev/null
+++ b/scons/custom.py
@@ -0,0 +1,198 @@
+"""custom
+
+Custom builders and methods.
+
+"""
+
+#
+# Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+# All Rights Reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sub license, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice (including the
+# next paragraph) shall be included in all copies or substantial portions
+# of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+# IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+# ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+
+import os
+import os.path
+import re
+
+import SCons.Action
+import SCons.Builder
+import SCons.Scanner
+
+import fixes
+
+
+def quietCommandLines(env):
+    # Quiet command lines
+    # See also http://www.scons.org/wiki/HidingCommandLinesInOutput
+    env['ASCOMSTR'] = "  Assembling $SOURCE ..."
+    env['ASPPCOMSTR'] = "  Assembling $SOURCE ..."
+    env['CCCOMSTR'] = "  Compiling $SOURCE ..."
+    env['SHCCCOMSTR'] = "  Compiling $SOURCE ..."
+    env['CXXCOMSTR'] = "  Compiling $SOURCE ..."
+    env['SHCXXCOMSTR'] = "  Compiling $SOURCE ..."
+    env['ARCOMSTR'] = "  Archiving $TARGET ..."
+    env['RANLIBCOMSTR'] = "  Indexing $TARGET ..."
+    env['LINKCOMSTR'] = "  Linking $TARGET ..."
+    env['SHLINKCOMSTR'] = "  Linking $TARGET ..."
+    env['LDMODULECOMSTR'] = "  Linking $TARGET ..."
+    env['SWIGCOMSTR'] = "  Generating $TARGET ..."
+
+
+def createConvenienceLibBuilder(env):
+    """This is a utility function that creates the ConvenienceLibrary
+    Builder in an Environment if it is not there already.
+
+    If it is already there, we return the existing one.
+
+    Based on the stock StaticLibrary and SharedLibrary builders.
+    """
+
+    try:
+        convenience_lib = env['BUILDERS']['ConvenienceLibrary']
+    except KeyError:
+        action_list = [ SCons.Action.Action("$ARCOM", "$ARCOMSTR") ]
+        if env.Detect('ranlib'):
+            ranlib_action = SCons.Action.Action("$RANLIBCOM", "$RANLIBCOMSTR")
+            action_list.append(ranlib_action)
+
+        convenience_lib = SCons.Builder.Builder(action = action_list,
+                                  emitter = '$LIBEMITTER',
+                                  prefix = '$LIBPREFIX',
+                                  suffix = '$LIBSUFFIX',
+                                  src_suffix = '$SHOBJSUFFIX',
+                                  src_builder = 'SharedObject')
+        env['BUILDERS']['ConvenienceLibrary'] = convenience_lib
+
+    return convenience_lib
+
+
+# TODO: handle import statements with multiple modules
+# TODO: handle from import statements
+import_re = re.compile(r'^import\s+(\S+)$', re.M)
+
+def python_scan(node, env, path):
+    # http://www.scons.org/doc/0.98.5/HTML/scons-user/c2781.html#AEN2789
+    contents = node.get_contents()
+    source_dir = node.get_dir()
+    imports = import_re.findall(contents)
+    results = []
+    for imp in imports:
+        for dir in path:
+            file = os.path.join(str(dir), imp.replace('.', os.sep) + '.py')
+            if os.path.exists(file):
+                results.append(env.File(file))
+                break
+            file = os.path.join(str(dir), imp.replace('.', os.sep), '__init__.py')
+            if os.path.exists(file):
+                results.append(env.File(file))
+                break
+    return results
+
+python_scanner = SCons.Scanner.Scanner(function = python_scan, skeys = ['.py'])
+
+
+def code_generate(env, script, target, source, command):
+    """Method to simplify code generation via python scripts.
+
+    http://www.scons.org/wiki/UsingCodeGenerators
+    http://www.scons.org/doc/0.98.5/HTML/scons-user/c2768.html
+    """
+
+    # We're generating code using Python scripts, so we have to be
+    # careful with our scons elements.  This entry represents
+    # the generator file *in the source directory*.
+    script_src = env.File(script).srcnode()
+
+    # This command creates generated code *in the build directory*.
+    command = command.replace('$SCRIPT', script_src.path)
+    code = env.Command(target, source, command)
+
+    # Explicitly mark that the generated code depends on the generator,
+    # and on implicitly imported python modules
+    path = (script_src.get_dir(),)
+    deps = [script_src]
+    deps += script_src.get_implicit_deps(env, python_scanner, path)
+    env.Depends(code, deps)
+
+    # Running the Python script causes .pyc files to be generated in the
+    # source directory.  When we clean up, they should go too. So add side
+    # effects for .pyc files
+    for dep in deps:
+        pyc = env.File(str(dep) + 'c')
+        env.SideEffect(pyc, code)
+
+    return code
+
+
+def createCodeGenerateMethod(env):
+    env.Append(SCANNERS = python_scanner)
+    env.AddMethod(code_generate, 'CodeGenerate')
+
+
+def symlink(target, source, env):
+    target = str(target[0])
+    source = str(source[0])
+    if os.path.islink(target) or os.path.exists(target):
+        os.remove(target)
+    os.symlink(os.path.basename(source), target)
+
+def install_program(env, source):
+    source = str(source[0])
+    target_dir =  os.path.join(env.Dir('#.').srcnode().abspath, env['build'], 'bin')
+    target_name = str(source)
+    env.InstallAs(os.path.join(target_dir, target_name), source)
+
+def install_shared_library(env, source, version = ()):
+    source = str(source[0])
+    version = tuple(map(str, version))
+    target_dir =  os.path.join(env.Dir('#.').srcnode().abspath, env['build'], 'lib')
+    target_name = '.'.join((str(source),) + version)
+    last = env.InstallAs(os.path.join(target_dir, target_name), source)
+    while len(version):
+        version = version[:-1]
+        target_name = '.'.join((str(source),) + version)
+        action = SCons.Action.Action(symlink, "$TARGET -> $SOURCE")
+        last = env.Command(os.path.join(target_dir, target_name), last, action) 
+
+def createInstallMethods(env):
+    env.AddMethod(install_program, 'InstallProgram')
+    env.AddMethod(install_shared_library, 'InstallSharedLibrary')
+
+
+def generate(env):
+    """Common environment generation code"""
+
+    if env.get('quiet', True):
+        quietCommandLines(env)
+
+    # Custom builders and methods
+    createConvenienceLibBuilder(env)
+    createCodeGenerateMethod(env)
+    createInstallMethods(env)
+
+    # for debugging
+    #print env.Dump()
+
+
+def exists(env):
+    return 1
diff --git a/scons/gallium.py b/scons/gallium.py
index 1f9cd3d920..61334f71c7 100644
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -38,116 +38,6 @@ import SCons.Action
 import SCons.Builder
 import SCons.Scanner
 
-import fixes
-
-
-def quietCommandLines(env):
-    # Quiet command lines
-    # See also http://www.scons.org/wiki/HidingCommandLinesInOutput
-    env['ASCOMSTR'] = "  Assembling $SOURCE ..."
-    env['ASPPCOMSTR'] = "  Assembling $SOURCE ..."
-    env['CCCOMSTR'] = "  Compiling $SOURCE ..."
-    env['SHCCCOMSTR'] = "  Compiling $SOURCE ..."
-    env['CXXCOMSTR'] = "  Compiling $SOURCE ..."
-    env['SHCXXCOMSTR'] = "  Compiling $SOURCE ..."
-    env['ARCOMSTR'] = "  Archiving $TARGET ..."
-    env['RANLIBCOMSTR'] = "  Indexing $TARGET ..."
-    env['LINKCOMSTR'] = "  Linking $TARGET ..."
-    env['SHLINKCOMSTR'] = "  Linking $TARGET ..."
-    env['LDMODULECOMSTR'] = "  Linking $TARGET ..."
-    env['SWIGCOMSTR'] = "  Generating $TARGET ..."
-
-
-def createConvenienceLibBuilder(env):
-    """This is a utility function that creates the ConvenienceLibrary
-    Builder in an Environment if it is not there already.
-
-    If it is already there, we return the existing one.
-
-    Based on the stock StaticLibrary and SharedLibrary builders.
-    """
-
-    try:
-        convenience_lib = env['BUILDERS']['ConvenienceLibrary']
-    except KeyError:
-        action_list = [ SCons.Action.Action("$ARCOM", "$ARCOMSTR") ]
-        if env.Detect('ranlib'):
-            ranlib_action = SCons.Action.Action("$RANLIBCOM", "$RANLIBCOMSTR")
-            action_list.append(ranlib_action)
-
-        convenience_lib = SCons.Builder.Builder(action = action_list,
-                                  emitter = '$LIBEMITTER',
-                                  prefix = '$LIBPREFIX',
-                                  suffix = '$LIBSUFFIX',
-                                  src_suffix = '$SHOBJSUFFIX',
-                                  src_builder = 'SharedObject')
-        env['BUILDERS']['ConvenienceLibrary'] = convenience_lib
-
-    return convenience_lib
-
-
-# TODO: handle import statements with multiple modules
-# TODO: handle from import statements
-import_re = re.compile(r'^import\s+(\S+)$', re.M)
-
-def python_scan(node, env, path):
-    # http://www.scons.org/doc/0.98.5/HTML/scons-user/c2781.html#AEN2789
-    contents = node.get_contents()
-    source_dir = node.get_dir()
-    imports = import_re.findall(contents)
-    results = []
-    for imp in imports:
-        for dir in path:
-            file = os.path.join(str(dir), imp.replace('.', os.sep) + '.py')
-            if os.path.exists(file):
-                results.append(env.File(file))
-                break
-            file = os.path.join(str(dir), imp.replace('.', os.sep), '__init__.py')
-            if os.path.exists(file):
-                results.append(env.File(file))
-                break
-    return results
-
-python_scanner = SCons.Scanner.Scanner(function = python_scan, skeys = ['.py'])
-
-
-def code_generate(env, script, target, source, command):
-    """Method to simplify code generation via python scripts.
-
-    http://www.scons.org/wiki/UsingCodeGenerators
-    http://www.scons.org/doc/0.98.5/HTML/scons-user/c2768.html
-    """
-
-    # We're generating code using Python scripts, so we have to be
-    # careful with our scons elements.  This entry represents
-    # the generator file *in the source directory*.
-    script_src = env.File(script).srcnode()
-
-    # This command creates generated code *in the build directory*.
-    command = command.replace('$SCRIPT', script_src.path)
-    code = env.Command(target, source, command)
-
-    # Explicitly mark that the generated code depends on the generator,
-    # and on implicitly imported python modules
-    path = (script_src.get_dir(),)
-    deps = [script_src]
-    deps += script_src.get_implicit_deps(env, python_scanner, path)
-    env.Depends(code, deps)
-
-    # Running the Python script causes .pyc files to be generated in the
-    # source directory.  When we clean up, they should go too. So add side
-    # effects for .pyc files
-    for dep in deps:
-        pyc = env.File(str(dep) + 'c')
-        env.SideEffect(pyc, code)
-
-    return code
-
-
-def createCodeGenerateMethod(env):
-    env.Append(SCANNERS = python_scanner)
-    env.AddMethod(code_generate, 'CodeGenerate')
-
 
 def symlink(target, source, env):
     target = str(target[0])
@@ -201,9 +91,6 @@ def num_jobs():
 def generate(env):
     """Common environment generation code"""
 
-    if env.get('quiet', True):
-        quietCommandLines(env)
-
     # Toolchain
     platform = env['platform']
     if env['toolchain'] == 'default':
@@ -543,8 +430,7 @@ def generate(env):
     env.Append(LIBS = [])
 
     # Custom builders and methods
-    createConvenienceLibBuilder(env)
-    createCodeGenerateMethod(env)
+    env.Tool('custom')
     createInstallMethods(env)
 
     # for debugging
diff --git a/scons/generic.py b/scons/generic.py
index 859bf2ae64..208e3b6526 100644
--- a/scons/generic.py
+++ b/scons/generic.py
@@ -41,107 +41,6 @@ import SCons.Builder
 import SCons.Scanner
 
 
-def quietCommandLines(env):
-    # Quiet command lines
-    # See also http://www.scons.org/wiki/HidingCommandLinesInOutput
-    env['CCCOMSTR'] = "Compiling $SOURCE ..."
-    env['CXXCOMSTR'] = "Compiling $SOURCE ..."
-    env['ARCOMSTR'] = "Archiving $TARGET ..."
-    env['RANLIBCOMSTR'] = ""
-    env['LINKCOMSTR'] = "Linking $TARGET ..."
-
-
-def createConvenienceLibBuilder(env):
-    """This is a utility function that creates the ConvenienceLibrary
-    Builder in an Environment if it is not there already.
-
-    If it is already there, we return the existing one.
-
-    Based on the stock StaticLibrary and SharedLibrary builders.
-    """
-
-    try:
-        convenience_lib = env['BUILDERS']['ConvenienceLibrary']
-    except KeyError:
-        action_list = [ SCons.Action.Action("$ARCOM", "$ARCOMSTR") ]
-        if env.Detect('ranlib'):
-            ranlib_action = SCons.Action.Action("$RANLIBCOM", "$RANLIBCOMSTR")
-            action_list.append(ranlib_action)
-
-        convenience_lib = SCons.Builder.Builder(action = action_list,
-                                  emitter = '$LIBEMITTER',
-                                  prefix = '$LIBPREFIX',
-                                  suffix = '$LIBSUFFIX',
-                                  src_suffix = '$SHOBJSUFFIX',
-                                  src_builder = 'SharedObject')
-        env['BUILDERS']['ConvenienceLibrary'] = convenience_lib
-
-    return convenience_lib
-
-
-# TODO: handle import statements with multiple modules
-# TODO: handle from import statements
-import_re = re.compile(r'^import\s+(\S+)$', re.M)
-
-def python_scan(node, env, path):
-    # http://www.scons.org/doc/0.98.5/HTML/scons-user/c2781.html#AEN2789
-    contents = node.get_contents()
-    source_dir = node.get_dir()
-    imports = import_re.findall(contents)
-    results = []
-    for imp in imports:
-        for dir in path:
-            file = os.path.join(str(dir), imp.replace('.', os.sep) + '.py')
-            if os.path.exists(file):
-                results.append(env.File(file))
-                break
-            file = os.path.join(str(dir), imp.replace('.', os.sep), '__init__.py')
-            if os.path.exists(file):
-                results.append(env.File(file))
-                break
-    return results
-
-python_scanner = SCons.Scanner.Scanner(function = python_scan, skeys = ['.py'])
-
-
-def code_generate(env, script, target, source, command):
-    """Method to simplify code generation via python scripts.
-
-    http://www.scons.org/wiki/UsingCodeGenerators
-    http://www.scons.org/doc/0.98.5/HTML/scons-user/c2768.html
-    """
-
-    # We're generating code using Python scripts, so we have to be
-    # careful with our scons elements.  This entry represents
-    # the generator file *in the source directory*.
-    script_src = env.File(script).srcnode()
-
-    # This command creates generated code *in the build directory*.
-    command = command.replace('$SCRIPT', script_src.path)
-    code = env.Command(target, source, command)
-
-    # Explicitly mark that the generated code depends on the generator,
-    # and on implicitly imported python modules
-    path = (script_src.get_dir(),)
-    deps = [script_src]
-    deps += script_src.get_implicit_deps(env, python_scanner, path)
-    env.Depends(code, deps)
-
-    # Running the Python script causes .pyc files to be generated in the
-    # source directory.  When we clean up, they should go too. So add side
-    # effects for .pyc files
-    for dep in deps:
-        pyc = env.File(str(dep) + 'c')
-        env.SideEffect(pyc, code)
-
-    return code
-
-
-def createCodeGenerateMethod(env):
-    env.Append(SCANNERS = python_scanner)
-    env.AddMethod(code_generate, 'CodeGenerate')
-
-
 def symlink(target, source, env):
     target = str(target[0])
     source = str(source[0])
@@ -578,8 +477,7 @@ def generate(env):
     env.Append(LIBS = [])
 
     # Custom builders and methods
-    createConvenienceLibBuilder(env)
-    createCodeGenerateMethod(env)
+    env.Tool('custom')
     createInstallMethods(env)
 
     # for debugging