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260494626b515b4e4af810ace22584ba8574ed0b
nginx-unit/auto/os/conf
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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# Copyright (C) Igor Sysoev
# Copyright (C) NGINX, Inc.
# To support dynamically loaded modules libnxt library must be a shared
# object itself because an application linked with static libnxt library
# may lack code required by the modules. Dynamic linkers allow to specify
# relative path in SONAME library entry or in RPATH executable entry.
#
# Solaris 7, Linux 2.2, and FreeBSD 7.3 support $ORIGIN variable.
# MacOSX supports @executable_path variable.
# NetBSD does not support $ORIGIN variable.
#
# "ar -r" is enough to create a static library, ranlib is surplus.
# "ar -c" disables the "creating archive" warning.
case "$NXT_SYSTEM" in
Linux)
nxt_have=NXT_LINUX . auto/have
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -shared -Wl,-soname,libnxt.so"
NXT_SHARED_LOCAL_LINK="\$(CC) -shared \
-Wl,-soname,\\\$\$ORIGIN/libnxt.so"
NXT_MODULE_LINK="\$(CC) -shared"
# "-Wl,-E" exports symbols of executable file.
NXT_EXEC_LINK="\$(CC) -Wl,-E"
NXT_SHARED_LOCAL_EXEC_LINK=
NXT_LIB_STATIC="libnxt.a"
NXT_LIB_SHARED="libnxt.so"
NXT_LIB_SHARED_LOCAL="$NXT_BUILD_DIR/lib/libnxt.so"
NXT_LIB_UNIT_STATIC="libunit.a"
NXT_LIBM="-lm"
NXT_LIBS="$NXT_LIBRT $NXT_LIBDL $NXT_PTHREAD"
;;
FreeBSD)
nxt_have=NXT_FREEBSD . auto/have
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -shared -Wl,-soname,libnxt.so"
NXT_SHARED_LOCAL_LINK="\$(CC) -shared \
-Wl,-soname,\\\$\$ORIGIN/libnxt.so"
NXT_MODULE_LINK="\$(CC) -shared"
# "-Wl,-E" exports symbols of executable file.
NXT_EXEC_LINK="\$(CC) -Wl,-E"
# "-Wl,-z,origin" enables $ORIGIN processing.
NXT_SHARED_LOCAL_EXEC_LINK="-Wl,-z,origin"
NXT_LIB_STATIC="libnxt.a"
NXT_LIB_SHARED="libnxt.so"
NXT_LIB_SHARED_LOCAL="$NXT_BUILD_DIR/lib/libnxt.so"
NXT_LIB_UNIT_STATIC="libunit.a"
NXT_LIBM="-lm"
NXT_LIBS="$NXT_LIBRT $NXT_PTHREAD"
;;
SunOS)
nxt_have=NXT_SOLARIS . auto/have
case "$NXT_CC_NAME" in
SunC):
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -G -h libnxt.so"
NXT_SHARED_LOCAL_LINK="\$(CC) -G -h \\\$\$ORIGIN/libnxt.so"
NXT_MODULE_LINK="\$(CC) -G"
;;
*)
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -shared -Wl,-soname,libnxt.so"
NXT_SHARED_LOCAL_LINK="\$(CC) -shared \
-Wl,-soname,\\\$\$ORIGIN/libnxt.so"
NXT_MODULE_LINK="\$(CC) -shared"
;;
esac
NXT_LIB_STATIC="libnxt.a"
NXT_LIB_SHARED="libnxt.so"
NXT_LIB_SHARED_LOCAL="$NXT_BUILD_DIR/lib/libnxt.so"
NXT_LIB_UNIT_STATIC="libunit.a"
NXT_EXEC_LINK="\$(CC)"
NXT_SHARED_LOCAL_EXEC_LINK=
NXT_LIBM="-lm"
NXT_LIBS="-lsocket $NXT_LIBSENDFILE"
NXT_LIBS="$NXT_LIBS $NXT_LIBRT $NXT_LIBDL $NXT_PTHREAD"
;;
Darwin)
nxt_have=NXT_MACOSX . auto/have
# HFS+ volumes are caseless by default.
nxt_have=NXT_HAVE_CASELESS_FILESYSTEM . auto/have
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -dynamiclib"
NXT_SHARED_LOCAL_LINK="\$(CC) -dynamiclib \
-install_name @executable_path/libnxt.dylib"
NXT_MODULE_LINK="\$(CC) -dynamiclib -undefined dynamic_lookup"
NXT_EXEC_LINK="\$(CC)"
NXT_SHARED_LOCAL_EXEC_LINK=
NXT_LIB_STATIC="libnxt.a"
NXT_LIB_SHARED="libnxt.dylib"
NXT_LIB_SHARED_LOCAL="$NXT_BUILD_DIR/lib/libnxt.dylib"
NXT_LIB_UNIT_STATIC="libunit.a"
# MacOSX libm.dylib is a symlink to libSystem.dylib.
NXT_LIBM=
NXT_LIBS=
;;
NetBSD)
nxt_have=NXT_NETBSD . auto/have
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -shared"
NXT_SHARED_LOCAL_LINK="\$(CC) -shared"
NXT_MODULE_LINK="\$(CC) -shared"
# "-Wl,-E" exports symbols of executable file.
NXT_EXEC_LINK="\$(CC) -Wl,-E"
NXT_SHARED_LOCAL_EXEC_LINK=
NXT_LIB_STATIC="libnxt.a"
NXT_LIB_SHARED="libnxt.so"
NXT_LIB_SHARED_LOCAL="$NXT_BUILD_DIR/lib/libnxt.so"
NXT_LIB_UNIT_STATIC="libunit.a"
NXT_LIBM="-lm"
NXT_LIBS="$NXT_LIBRT $NXT_PTHREAD"
;;
OpenBSD)
nxt_have=NXT_OPENBSD . auto/have
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -shared"
NXT_SHARED_LOCAL_LINK="\$(CC) -shared"
NXT_MODULE_LINK="\$(CC) -shared"
# "-Wl,-E" exports symbols of executable file.
NXT_EXEC_LINK="\$(CC) -Wl,-E"
NXT_SHARED_LOCAL_EXEC_LINK=
NXT_LIB_STATIC="libnxt.a"
NXT_LIB_SHARED="libnxt.so"
NXT_LIB_SHARED_LOCAL="$NXT_BUILD_DIR/lib/libnxt.so"
NXT_LIB_UNIT_STATIC="libunit.a"
NXT_LIBM="-lm"
NXT_LIBS="$NXT_PTHREAD"
;;
DragonFly)
nxt_have=NXT_DRAGONFLY . auto/have
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -shared"
NXT_SHARED_LOCAL_LINK="\$(CC) -shared"
NXT_MODULE_LINK="\$(CC) -shared"
# "-Wl,-E" exports symbols of executable file.
NXT_EXEC_LINK="\$(CC) -Wl,-E"
NXT_SHARED_LOCAL_EXEC_LINK=
NXT_LIB_STATIC="libnxt.a"
NXT_LIB_SHARED="libnxt.so"
NXT_LIB_SHARED_LOCAL="$NXT_BUILD_DIR/lib/libnxt.so"
NXT_LIB_UNIT_STATIC="libunit.a"
NXT_LIBM="-lm"
NXT_LIBS="$NXT_LIBRT $NXT_PTHREAD"
;;
AIX)
nxt_have=NXT_AIX . auto/have
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -G"
NXT_SHARED_LOCAL_LINK="\$(CC) -G"
NXT_MODULE_LINK="\$(CC) -G"
NXT_EXEC_LINK="\$(CC)"
NXT_SHARED_LOCAL_EXEC_LINK=
NXT_LIB_STATIC="libnxt.a"
NXT_LIB_SHARED="libnxt.so"
NXT_LIB_SHARED_LOCAL="$NXT_BUILD_DIR/lib/libnxt.so"
NXT_LIB_UNIT_STATIC="libunit.a"
NXT_LIBM="-lm"
NXT_LIBS="$NXT_PTHREAD"
;;
HP-UX)
nxt_have=NXT_HPUX . auto/have
NXT_EXEC_LINK="\$(CC)"
NXT_SHARED_LOCAL_EXEC_LINK=
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -shared"
NXT_SHARED_LOCAL_LINK="\$(CC) -shared"
NXT_MODULE_LINK="\$(CC) -shared"
NXT_LIB_STATIC="libnxt.a"
NXT_LIB_SHARED="libnxt.so"
NXT_LIB_SHARED_LOCAL="$NXT_BUILD_DIR/lib/libnxt.so"
NXT_LIB_UNIT_STATIC="libunit.a"
NXT_LIBM="-lm"
NXT_LIBS="$NXT_PTHREAD $NXT_LIBHG"
;;
QNX)
nxt_have=NXT_QNX . auto/have
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -shared"
NXT_SHARED_LOCAL_LINK="\$(CC) -shared"
NXT_MODULE_LINK="\$(CC) -shared"
NXT_EXEC_LINK="\$(CC)"
NXT_SHARED_LOCAL_EXEC_LINK=
NXT_LIB_STATIC="libnxt.a"
NXT_LIB_SHARED="libnxt.so"
NXT_LIB_SHARED_LOCAL="$NXT_BUILD_DIR/lib/libnxt.so"
NXT_LIB_UNIT_STATIC="libunit.a"
NXT_LIBM="-lm"
NXT_LIBS="$NXT_PTHREAD"
;;
*)
NXT_STATIC_LINK="\$(AR) -r -c"
NXT_SHARED_LINK="\$(CC) -shared"
NXT_SHARED_LOCAL_LINK="\$(CC) -shared"
NXT_MODULE_LINK="\$(CC) -shared"
# "-Wl,-E" exports symbols of executable file.
NXT_EXEC_LINK="\$(CC) -Wl,-E"
NXT_SHARED_LOCAL_EXEC_LINK=
NXT_LIB_STATIC="libnxt.a"
NXT_LIB_SHARED="libnxt.so"
NXT_LIB_SHARED_LOCAL="$NXT_BUILD_DIR/lib/libnxt.so"
NXT_LIB_UNIT_STATIC="libunit.a"
NXT_LIBM="-lm"
NXT_LIBS="$NXT_LIBRT $NXT_LIBDL $NXT_PTHREAD"
;;
esac
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