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Remove llvm-build's --configure-target-def-file.

Browse Source 
It was added 6.5 years ago in r144345, but was never hooked up and has been
unused since.  If _you_ do use this, feel free to revert, but add a comment
on where it's used.

https://reviews.llvm.org/D45262

llvm-svn: 330455
This commit is contained in:
Nico Weber 2018-04-20 17:21:10 +00:00
parent f5e87f5e16
commit f8d747bd3f
2 changed files with 1 additions and 114 deletions
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66
utils/llvm-build/llvmbuild/configutil.py
View File

@ -1,66 +0,0 @@
"""
Defines utilities useful for performing standard "configuration" style tasks.
"""
import re
import os
def configure_file(input_path, output_path, substitutions):
"""configure_file(input_path, output_path, substitutions) -> bool
Given an input and output path, "configure" the file at the given input path
by replacing variables in the file with those given in the substitutions
list. Returns true if the output file was written.
The substitutions list should be given as a list of tuples (regex string,
replacement), where the regex and replacement will be used as in 're.sub' to
execute the variable replacement.
The output path's parent directory need not exist (it will be created).
If the output path does exist and the configured data is not different than
it's current contents, the output file will not be modified. This is
designed to limit the impact of configured files on build dependencies.
"""
# Read in the input data.
f = open(input_path, "rb")
try:
data = f.read()
finally:
f.close()
# Perform the substitutions.
for regex_string,replacement in substitutions:
regex = re.compile(regex_string)
data = regex.sub(replacement, data)
# Ensure the output parent directory exists.
output_parent_path = os.path.dirname(os.path.abspath(output_path))
if not os.path.exists(output_parent_path):
os.makedirs(output_parent_path)
# If the output path exists, load it and compare to the configured contents.
if os.path.exists(output_path):
current_data = None
try:
f = open(output_path, "rb")
try:
current_data = f.read()
except:
current_data = None
f.close()
except:
current_data = None
if current_data is not None and current_data == data:
return False
# Write the output contents.
f = open(output_path, "wb")
try:
f.write(data)
finally:
f.close()
return True

49
utils/llvm-build/llvmbuild/main.py
View File

@ -4,7 +4,6 @@ import os
import sys
import llvmbuild.componentinfo as componentinfo
import llvmbuild.configutil as configutil
from llvmbuild.util import fatal, note
@ -376,7 +375,7 @@ subdirectories = %s
f.write("""\
//===- llvm-build generated file --------------------------------*- C++ -*-===//
//
// Component Library Depenedency Table
// Component Library Dependency Table
//
// Automatically generated file, do not edit!
//
@ -761,9 +760,6 @@ def main():
help=(
"If given, an alternate path to search for LLVMBuild.txt files"),
action="store", default=None, metavar="PATH")
group.add_option("", "--build-root", dest="build_root", metavar="PATH",
help="Path to the build directory (if needed) [%default]",
action="store", default=None)
parser.add_option_group(group)
group = OptionGroup(parser, "Output Options")
@ -785,14 +781,6 @@ def main():
dest="write_cmake_exports_fragment", metavar="PATH",
help="Write the CMake exports information to PATH",
action="store", default=None)
group.add_option("", "--configure-target-def-file",
dest="configure_target_def_files",
help="""Configure the given file at SUBPATH (relative to
the inferred or given source root, and with a '.in' suffix) by replacing certain
substitution variables with lists of targets that support certain features (for
example, targets with AsmPrinters) and write the result to the build root (as
given by --build-root) at the same SUBPATH""",
metavar="SUBPATH", action="append", default=None)
parser.add_option_group(group)
group = OptionGroup(parser, "Configuration Options")
@ -863,40 +851,5 @@ given by --build-root) at the same SUBPATH""",
project_info.write_cmake_exports_fragment(opts.write_cmake_exports_fragment,
opts.optional_components)
# Configure target definition files, if requested.
if opts.configure_target_def_files:
# Verify we were given a build root.
if not opts.build_root:
parser.error("must specify --build-root when using "
"--configure-target-def-file")
# Create the substitution list.
available_targets = [ci for ci in project_info.component_infos
if ci.type_name == 'TargetGroup']
substitutions = [
("@LLVM_ENUM_TARGETS@",
' '.join('LLVM_TARGET(%s)' % ci.name
for ci in available_targets)),
("@LLVM_ENUM_ASM_PRINTERS@",
' '.join('LLVM_ASM_PRINTER(%s)' % ci.name
for ci in available_targets
if ci.has_asmprinter)),
("@LLVM_ENUM_ASM_PARSERS@",
' '.join('LLVM_ASM_PARSER(%s)' % ci.name
for ci in available_targets
if ci.has_asmparser)),
("@LLVM_ENUM_DISASSEMBLERS@",
' '.join('LLVM_DISASSEMBLER(%s)' % ci.name
for ci in available_targets
if ci.has_disassembler))]
# Configure the given files.
for subpath in opts.configure_target_def_files:
inpath = os.path.join(source_root, subpath + '.in')
outpath = os.path.join(opts.build_root, subpath)
result = configutil.configure_file(inpath, outpath, substitutions)
if not result:
note("configured file %r hasn't changed" % outpath)
if __name__=='__main__':
main()