unit/configure
Alejandro Colomar 6e16d7ac5b Auto: mirroring installation structure in build tree.
This makes the build tree more organized, which is good for adding new
stuff.  Now, it's useful for example for adding manual pages in man3/,
but it may be useful in the future for example for extending the build
system to run linters (e.g., clang-tidy(1), Clang analyzer, ...) on the
C source code.

Previously, the build tree was quite flat, and looked like this (after
`./configure && make`):

    $ tree -I src build
    build
    ├── Makefile
    ├── autoconf.data
    ├── autoconf.err
    ├── echo
    ├── libnxt.a
    ├── nxt_auto_config.h
    ├── nxt_version.h
    ├── unitd
    └── unitd.8

    1 directory, 9 files

And after this patch, it looks like this:

    $ tree -I src build
    build
    ├── Makefile
    ├── autoconf.data
    ├── autoconf.err
    ├── bin
    │   └── echo
    ├── include
    │   ├── nxt_auto_config.h
    │   └── nxt_version.h
    ├── lib
    │   ├── libnxt.a
    │   └── unit
    │       └── modules
    ├── sbin
    │   └── unitd
    ├── share
    │   └── man
    │       └── man8
    │           └── unitd.8
    └── var
        ├── lib
        │   └── unit
        ├── log
        │   └── unit
        └── run
            └── unit

    17 directories, 9 files

It also solves one issue introduced in
5a37171f73 ("Added default values for pathnames.").  Before that
commit, it was possible to run unitd from the build system
(`./build/unitd`).  Now, since it expects files in a very specific
location, that has been broken.  By having a directory structure that
mirrors the installation, it's possible to trick it to believe it's
installed, and run it from there:

    $ ./configure --prefix=./build
    $ make
    $ ./build/sbin/unitd

Fixes: 5a37171f73 ("Added default values for pathnames.")
Reported-by: Liam Crilly <liam@nginx.com>
Reviewed-by: Konstantin Pavlov <thresh@nginx.com>
Reviewed-by: Andrew Clayton <a.clayton@nginx.com>
Cc: Andrei Zeliankou <zelenkov@nginx.com>
Cc: Zhidao Hong <z.hong@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
2023-03-29 00:41:08 +02:00

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#!/bin/sh
# Copyright (C) Igor Sysoev
# Copyright (C) NGINX, Inc.
# Disable localized program messages.
LC_ALL=C
export LC_ALL
# Stop on error exit status.
set -e
# Stop on uninitialized variable.
set -u
# Initialize variables with null values if they are not defined.
CFLAGS=${CFLAGS=}
NXT_TEST_CFLAGS=${NXT_TEST_CFLAGS=}
NXT_TEST_LIBS=${NXT_TEST_LIBS=}
NXT_BUILD_DIR=${NXT_BUILD_DIR:-build}
NXT_AUTOTEST=$NXT_BUILD_DIR/autotest
NXT_AUTOCONF_ERR=$NXT_BUILD_DIR/autoconf.err
NXT_AUTOCONF_DATA=$NXT_BUILD_DIR/autoconf.data
NXT_AUTO_CONFIG_H=$NXT_BUILD_DIR/include/nxt_auto_config.h
NXT_VERSION_H=$NXT_BUILD_DIR/include/nxt_version.h
NXT_MAKEFILE=$NXT_BUILD_DIR/Makefile
CC=${CC:-cc}
NXT_DAEMON=unitd
NXT_USER="nobody"
NXT_GROUP=
nxt_module=${1:-""}
case $nxt_module in
""|--*)
;;
unit)
shift
;;
*)
. auto/modules/conf
exit 0
;;
esac
. ./version
. auto/os/test
. auto/options
mkdir -p $NXT_BUILD_DIR
mkdir -p $NXT_BUILD_DIR/bin
mkdir -p $NXT_BUILD_DIR/include
mkdir -p $NXT_BUILD_DIR/lib
mkdir -p $NXT_BUILD_DIR/lib/unit/modules
mkdir -p $NXT_BUILD_DIR/sbin
mkdir -p $NXT_BUILD_DIR/share/man/man8
mkdir -p $NXT_BUILD_DIR/src
mkdir -p $NXT_BUILD_DIR/src/test
mkdir -p $NXT_BUILD_DIR/var/lib/unit
mkdir -p $NXT_BUILD_DIR/var/log/unit
mkdir -p $NXT_BUILD_DIR/var/run/unit
> $NXT_AUTOCONF_ERR
> $NXT_AUTO_CONFIG_H
. auto/cc/test
cat << END >> $NXT_AUTO_CONFIG_H
#define NXT_CONFIGURE_OPTIONS "$NXT_CONFIGURE_OPTIONS"
#define NXT_SYSTEM_VERSION "$NXT_SYSTEM $NXT_SYSTEM_VERSION $NXT_SYSTEM_PLATFORM"
#define NXT_COMPILER_VERSION "$NXT_CC_VERSION"
#define NXT_PID "$NXT_PID"
#define NXT_LOG "$NXT_LOG"
#define NXT_MODULESDIR "$NXT_MODULESDIR"
#define NXT_STATEDIR "$NXT_STATEDIR"
#define NXT_TMPDIR "$NXT_TMPDIR"
#define NXT_CONTROL_SOCK "$NXT_CONTROL"
#define NXT_USER "$NXT_USER"
#define NXT_GROUP "$NXT_GROUP"
END
if [ $echo = echo ]; then
# Build a portable "echo" program that supports only "-n" option.
# This also tests C compiler ability to create executables.
. auto/echo/build
fi
nxt_have=NXT_UNIX . auto/have
if [ $NXT_UNIX_DOMAIN = YES ]; then
nxt_have=NXT_HAVE_UNIX_DOMAIN . auto/have
fi
NXT_LIBRT=
. auto/endian
. auto/types
. auto/clang
. auto/atomic
. auto/malloc
. auto/mmap
. auto/shmem
. auto/time
. auto/threads
. auto/events
. auto/sockets
. auto/sendfile
. auto/files
. auto/unix
. auto/os/conf
. auto/ssltls
if [ $NXT_REGEX = YES ]; then
. auto/pcre
fi
. auto/cgroup
. auto/isolation
. auto/capability
case "$NXT_SYSTEM_PLATFORM" in
i386 | amd64 | x86_64)
nxt_have=NXT_HAVE_NONALIGNED . auto/have
;;
esac
if [ $NXT_DEBUG = YES ]; then
nxt_debug=1
else
nxt_debug=0
fi
cat << END >> $NXT_AUTO_CONFIG_H
#ifndef NXT_DEBUG
#define NXT_DEBUG $nxt_debug
#endif
#define NXT_SHM_PREFIX "$NXT_SHM_PREFIX"
END
. auto/test_build
. auto/sources
. auto/save
# LOOK
NXT_LIB_AUX_CFLAGS="$NXT_OPENSSL_CFLAGS $NXT_GNUTLS_CFLAGS \\
$NXT_CYASSL_CFLAGS $NXT_POLARSSL_CFLAGS \\
$NXT_PCRE_CFLAGS"
NXT_LIB_AUX_LIBS="$NXT_OPENSSL_LIBS $NXT_GNUTLS_LIBS \\
$NXT_CYASSL_LIBS $NXT_POLARSSL_LIBS \\
$NXT_PCRE_LIB"
if [ $NXT_NJS != NO ]; then
. auto/njs
fi
. auto/make
. auto/summary