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Auto: mirroring installation structure in build tree.

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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>
This commit is contained in:
Alejandro Colomar
2023-03-22 16:55:02 +01:00
parent 5ba79b9b52
commit 6e16d7ac5b
17 changed files with 122 additions and 113 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
configure vendored
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@@ -24,8 +24,8 @@ 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=$NXT_BUILD_DIR/nxt_auto_config.h
NXT_VERSION_H=$NXT_BUILD_DIR/nxt_version.h
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}
@@ -55,7 +55,19 @@ esac
. auto/os/test
. auto/options
test -d $NXT_BUILD_DIR || mkdir $NXT_BUILD_DIR
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