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meson: add sparse support 

Do not use cgcc; instead, extract compilation commands from compile_commands.json
and invoke sparse directly.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-02-03 14:45:33 +01:00
parent bf0e56a3ca
commit 968b4db38a
4 changed files with 35 additions and 6 deletions
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1
Makefile
View File

@ -1261,6 +1261,7 @@ endif
$(call print-help,install,Install QEMU, documentation and tools)
$(call print-help,ctags/TAGS,Generate tags file for editors)
$(call print-help,cscope,Generate cscope index)
$(call print-help,sparse,Run sparse on the QEMU source)
@echo ''
@$(if $(TARGET_DIRS), \
echo 'Architecture specific targets:'; \

8
configure vendored
View File

@ -3058,7 +3058,7 @@ fi
##########################################
# Sparse probe
if test "$sparse" != "no" ; then
if has cgcc; then
if has sparse; then
sparse=yes
else
if test "$sparse" = "yes" ; then
@ -7859,11 +7859,7 @@ echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
echo "QEMU_CXXFLAGS=$QEMU_CXXFLAGS" >> $config_host_mak
echo "QEMU_INCLUDES=$QEMU_INCLUDES" >> $config_host_mak
if test "$sparse" = "yes" ; then
echo "CC := REAL_CC=\"\$(CC)\" cgcc" >> $config_host_mak
echo "CPP := REAL_CC=\"\$(CPP)\" cgcc" >> $config_host_mak
echo "CXX := REAL_CC=\"\$(CXX)\" cgcc" >> $config_host_mak
echo "HOST_CC := REAL_CC=\"\$(HOST_CC)\" cgcc" >> $config_host_mak
echo "QEMU_CFLAGS += -Wbitwise -Wno-transparent-union -Wno-old-initializer -Wno-non-pointer-null" >> $config_host_mak
echo "SPARSE_CFLAGS = -Wbitwise -Wno-transparent-union -Wno-old-initializer -Wno-non-pointer-null" >> $config_host_mak
fi
echo "QEMU_LDFLAGS=$QEMU_LDFLAGS" >> $config_host_mak
echo "LDFLAGS_NOPIE=$LDFLAGS_NOPIE" >> $config_host_mak

7
meson.build
View File

@ -25,6 +25,13 @@ if host_machine.system() == 'darwin'
add_languages('objc', required: false, native: false)
endif
if 'SPARSE_CFLAGS' in config_host
run_target('sparse',
command: [find_program('scripts/check_sparse.py'),
config_host['SPARSE_CFLAGS'].split(),
'compile_commands.json'])
endif
configure_file(input: files('scripts/ninjatool.py'),
output: 'ninjatool',
configuration: config_host)

25
scripts/check_sparse.py Normal file
View File

@ -0,0 +1,25 @@
#! /usr/bin/env python3
# Invoke sparse based on the contents of compile_commands.json
import json
import subprocess
import sys
import shlex
def extract_cflags(shcmd):
cflags = shlex.split(shcmd)
return [x for x in cflags
if x.startswith('-D') or x.startswith('-I') or x.startswith('-W')
or x.startswith('-std=')]
cflags = sys.argv[1:-1]
with open(sys.argv[-1], 'r') as fd:
compile_commands = json.load(fd)
for cmd in compile_commands:
cmd = ['sparse'] + cflags + extract_cflags(cmd['command']) + [cmd['file']]
print(' '.join((shlex.quote(x) for x in cmd)))
r = subprocess.run(cmd)
if r.returncode != 0:
sys.exit(r.returncode)