qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Cc: Thomas Huth <thuth@redhat.com>
Subject: [PULL 24/26] configure: prepare for auto-generated option parsing
Date: Thu, 14 Oct 2021 18:29:36 +0200	[thread overview]
Message-ID: <20211014162938.430211-25-pbonzini@redhat.com> (raw)
In-Reply-To: <20211014162938.430211-1-pbonzini@redhat.com>

Prepare the configure script and Makefile for automatically generated
help and parsing.

Because we need to run the script to generate the full help, we
cannot rely on the user supplying the path to a Python interpreter
with --python; therefore, the introspection output is parsed into
shell functions and stored in scripts/.  The converter is written
in Python as standard for QEMU, and this commit contains a stub.

Tested-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211007130829.632254-18-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 Makefile                      |  8 ++++-
 configure                     | 31 ++++++++++++-----
 scripts/meson-buildoptions.py | 64 +++++++++++++++++++++++++++++++++++
 scripts/meson-buildoptions.sh | 13 +++++++
 4 files changed, 106 insertions(+), 10 deletions(-)
 create mode 100755 scripts/meson-buildoptions.py
 create mode 100644 scripts/meson-buildoptions.sh

diff --git a/Makefile b/Makefile
index 401c623a65..fe9415ac64 100644
--- a/Makefile
+++ b/Makefile
@@ -87,7 +87,7 @@ x := $(shell rm -rf meson-private meson-info meson-logs)
 endif
 
 # 1. ensure config-host.mak is up-to-date
-config-host.mak: $(SRC_PATH)/configure $(SRC_PATH)/pc-bios $(SRC_PATH)/VERSION
+config-host.mak: $(SRC_PATH)/configure $(SRC_PATH)/scripts/meson-buildoptions.sh $(SRC_PATH)/pc-bios $(SRC_PATH)/VERSION
 	@echo config-host.mak is out-of-date, running configure
 	@if test -f meson-private/coredata.dat; then \
 	  ./config.status --skip-meson; \
@@ -124,6 +124,12 @@ ifneq ($(MESON),)
 Makefile.mtest: build.ninja scripts/mtest2make.py
 	$(MESON) introspect --targets --tests --benchmarks | $(PYTHON) scripts/mtest2make.py > $@
 -include Makefile.mtest
+
+.PHONY: update-buildoptions
+all update-buildoptions: $(SRC_PATH)/scripts/meson-buildoptions.sh
+$(SRC_PATH)/scripts/meson-buildoptions.sh: $(SRC_PATH)/meson_options.txt
+	$(MESON) introspect --buildoptions $(SRC_PATH)/meson.build | $(PYTHON) \
+	  scripts/meson-buildoptions.py > $@.tmp && mv $@.tmp $@
 endif
 
 # 4. Rules to bridge to other makefiles
diff --git a/configure b/configure
index 2ec410378e..8eb0ef160f 100755
--- a/configure
+++ b/configure
@@ -789,6 +789,18 @@ fi
 
 werror=""
 
+. $source_path/scripts/meson-buildoptions.sh
+
+meson_options=
+meson_option_parse() {
+  meson_options="$meson_options $(_meson_option_parse "$@")"
+  if test $? -eq 1; then
+    echo "ERROR: unknown option $1"
+    echo "Try '$0 --help' for more information"
+    exit 1
+  fi
+}
+
 for opt do
   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
   case "$opt" in
@@ -1548,6 +1560,8 @@ for opt do
   ;;
   --disable-slirp-smbd) slirp_smbd=no
   ;;
+  --enable-* | --disable-*) meson_option_parse "$opt" "$optarg"
+  ;;
   *)
       echo "ERROR: unknown option $opt"
       echo "Try '$0 --help' for more information"
@@ -1804,11 +1818,9 @@ Advanced options (experts only):
                            enable plugins via shared library loading
   --disable-containers     don't use containers for cross-building
   --gdb=GDB-path           gdb to use for gdbstub tests [$gdb_bin]
-
-Optional features, enabled with --enable-FEATURE and
-disabled with --disable-FEATURE, default is enabled if available
-(unless built with --without-default-features):
-
+EOF
+  meson_options_help
+cat << EOF
   system          all system emulation targets
   user            supported user emulation targets
   linux-user      all linux usermode emulation targets
@@ -4489,7 +4501,8 @@ if test "$skip_meson" = no; then
   mv $cross config-meson.cross
 
   rm -rf meson-private meson-info meson-logs
-  NINJA=$ninja $meson setup \
+  run_meson() {
+    NINJA=$ninja $meson setup \
         --prefix "$prefix" \
         --libdir "$libdir" \
         --libexecdir "$libexecdir" \
@@ -4534,9 +4547,9 @@ if test "$skip_meson" = no; then
         -Dpa=$pa -Daudio_drv_list=$audio_drv_list -Dtcg_interpreter=$tcg_interpreter \
         -Dtrace_backends=$trace_backends -Dtrace_file=$trace_file -Dlinux_aio=$linux_aio \
         -Dnetmap=$netmap -Dvde=$vde \
-        $cross_arg \
-        "$PWD" "$source_path"
-
+        "$@" $cross_arg "$PWD" "$source_path"
+  }
+  eval run_meson $meson_options
   if test "$?" -ne 0 ; then
       error_exit "meson setup failed"
   fi
diff --git a/scripts/meson-buildoptions.py b/scripts/meson-buildoptions.py
new file mode 100755
index 0000000000..71ee56bd22
--- /dev/null
+++ b/scripts/meson-buildoptions.py
@@ -0,0 +1,64 @@
+#! /usr/bin/env python3
+
+# Generate configure command line options handling code, based on Meson's
+# user build options introspection data
+#
+# Copyright (C) 2021 Red Hat, Inc.
+#
+# Author: Paolo Bonzini <pbonzini@redhat.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+import json
+import textwrap
+import shlex
+import sys
+
+def sh_print(line=""):
+    print('  printf "%s\\n"', shlex.quote(line))
+
+
+def load_options(json):
+    json = [
+        x
+        for x in json
+        if x["section"] == "user"
+        and ":" not in x["name"]
+        and x["name"] not in SKIP_OPTIONS
+    ]
+    return sorted(json, key=lambda x: x["name"])
+
+
+def print_help(options):
+    print("meson_options_help() {")
+    sh_print()
+    sh_print("Optional features, enabled with --enable-FEATURE and")
+    sh_print("disabled with --disable-FEATURE, default is enabled if available")
+    sh_print("(unless built with --without-default-features):")
+    sh_print()
+    print("}")
+
+
+def print_parse(options):
+    print("_meson_option_parse() {")
+    print("  case $1 in")
+    print("    *) return 1 ;;")
+    print("  esac")
+    print("}")
+
+
+options = load_options(json.load(sys.stdin))
+print("# This file is generated by meson-buildoptions.py, do not edit!")
+print_help(options)
+print_parse(options)
diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh
new file mode 100644
index 0000000000..c8ae205601
--- /dev/null
+++ b/scripts/meson-buildoptions.sh
@@ -0,0 +1,13 @@
+# This file is generated by meson-buildoptions.py, do not edit!
+meson_options_help() {
+  printf "%s\n" ''
+  printf "%s\n" 'Optional features, enabled with --enable-FEATURE and'
+  printf "%s\n" 'disabled with --disable-FEATURE, default is enabled if available'
+  printf "%s\n" '(unless built with --without-default-features):'
+  printf "%s\n" ''
+}
+_meson_option_parse() {
+  case $1 in
+    *) return 1 ;;
+  esac
+}
-- 
2.31.1




  parent reply	other threads:[~2021-10-14 16:47 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-14 16:29 [PULL 00/26] Meson changes for 2021-10-14 Paolo Bonzini
2021-10-14 16:29 ` [PULL 01/26] configure: remove --oss-lib Paolo Bonzini
2021-10-14 16:29 ` [PULL 02/26] audio: remove CONFIG_AUDIO_WIN_INT Paolo Bonzini
2021-10-14 16:29 ` [PULL 03/26] configure, meson: move audio driver detection to Meson Paolo Bonzini
2021-11-01 14:32   ` Peter Maydell
2021-10-14 16:29 ` [PULL 04/26] meson: define symbols for all available audio drivers Paolo Bonzini
2021-10-14 16:29 ` [PULL 05/26] configure: add command line options for " Paolo Bonzini
2021-10-14 16:29 ` [PULL 06/26] kconfig: split CONFIG_SPARSE_MEM from fuzzing Paolo Bonzini
2021-10-14 16:29 ` [PULL 07/26] configure, meson: move fuzzing configuration to Meson Paolo Bonzini
2021-10-14 16:29 ` [PULL 08/26] trace: simple: pass trace_file unmodified to config-host.h Paolo Bonzini
2021-10-14 16:29 ` [PULL 09/26] trace: move configuration from configure to Meson Paolo Bonzini
2021-10-14 16:29 ` [PULL 10/26] configure, meson: move CONFIG_HOST_DSOSUF " Paolo Bonzini
2021-10-14 16:29 ` [PULL 11/26] configure, meson: get HOST_WORDS_BIGENDIAN via the machine object Paolo Bonzini
2021-10-14 16:29 ` [PULL 12/26] configure, meson: remove CONFIG_GCOV from config-host.mak Paolo Bonzini
2021-10-14 16:29 ` [PULL 13/26] meson: HAVE_GDB_BIN is not used by C code Paolo Bonzini
2021-10-14 16:29 ` [PULL 14/26] configure, meson: move remaining HAVE_* compiler tests to Meson Paolo Bonzini
2021-10-14 16:29 ` [PULL 15/26] configure, meson: move pthread_setname_np checks " Paolo Bonzini
2021-11-15 17:15   ` Daniel P. Berrangé
2021-11-15 17:25     ` Peter Maydell
2021-10-14 16:29 ` [PULL 16/26] configure, meson: move libaio check to meson.build Paolo Bonzini
2021-10-14 16:29 ` [PULL 17/26] configure, meson: move vde detection to meson Paolo Bonzini
2021-10-14 16:29 ` [PULL 18/26] configure, meson: move netmap " Paolo Bonzini
2021-10-14 16:29 ` [PULL 19/26] configure, meson: move Spice configure handling " Paolo Bonzini
2021-10-14 16:29 ` [PULL 20/26] configure: remove obsolete Solaris ar check Paolo Bonzini
2021-10-14 16:29 ` [PULL 21/26] configure, meson: move more compiler checks to Meson Paolo Bonzini
2021-11-15 16:36   ` Peter Maydell
2021-11-15 16:42     ` Peter Maydell
2021-11-16  9:29       ` Paolo Bonzini
2021-11-16 13:13       ` Peter Maydell
2021-11-15 16:55     ` Peter Maydell
2021-10-14 16:29 ` [PULL 22/26] configure: remove deprecated --{enable, disable}-git-update Paolo Bonzini
2021-10-14 16:29 ` [PULL 23/26] configure: accept "internal" for --enable-capstone/slirp/fdt Paolo Bonzini
2021-10-14 16:29 ` Paolo Bonzini [this message]
2021-10-14 16:29 ` [PULL 25/26] meson-buildoptions: include list of tracing backends Paolo Bonzini
2021-10-14 16:29 ` [PULL 26/26] configure: automatically parse command line for meson -D options Paolo Bonzini
2021-10-14 19:15 ` [PULL 00/26] Meson changes for 2021-10-14 Richard Henderson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20211014162938.430211-25-pbonzini@redhat.com \
    --to=pbonzini@redhat.com \
    --cc=qemu-devel@nongnu.org \
    --cc=thuth@redhat.com \
    --subject='Re: [PULL 24/26] configure: prepare for auto-generated option parsing' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).