Add CMake build system for valkey

.cmake-format.yaml

@@ -0,0 +1,76 @@
+format:
+  _help_line_width:
+    - How wide to allow formatted cmake files
+  line_width: 120
+  _help_tab_size:
+    - How many spaces to tab for indent
+  tab_size: 4
+  _help_use_tabchars:
+    - If true, lines are indented using tab characters (utf-8
+    - 0x09) instead of <tab_size> space characters (utf-8 0x20).
+    - In cases where the layout would require a fractional tab
+    - character, the behavior of the  fractional indentation is
+    - governed by <fractional_tab_policy>
+  use_tabchars: false
+  _help_separate_ctrl_name_with_space:
+    - If true, separate flow control names from their parentheses
+    - with a space
+  separate_ctrl_name_with_space: true
+  _help_min_prefix_chars:
+    - If the statement spelling length (including space and
+    - parenthesis) is smaller than this amount, then force reject
+    - nested layouts.
+  min_prefix_chars: 4
+  _help_max_prefix_chars:
+    - If the statement spelling length (including space and
+    - parenthesis) is larger than the tab width by more than this
+    - amount, then force reject un-nested layouts.
+  max_prefix_chars: 10
+  _help_max_lines_hwrap:
+    - If a candidate layout is wrapped horizontally but it exceeds
+    - this many lines, then reject the layout.
+  max_lines_hwrap: 2
+  _help_line_ending:
+    - What style line endings to use in the output.
+  line_ending: unix
+  _help_command_case:
+    - Format command names consistently as 'lower' or 'upper' case
+  command_case: lower
+  _help_keyword_case:
+    - Format keywords consistently as 'lower' or 'upper' case
+  keyword_case: unchanged
+  _help_always_wrap:
+    - A list of command names which should always be wrapped
+  always_wrap: []
+  _help_enable_sort:
+    - If true, the argument lists which are known to be sortable
+    - will be sorted lexicographicall
+  enable_sort: true
+  _help_autosort:
+    - If true, the parsers may infer whether or not an argument
+    - list is sortable (without annotation).
+  autosort: false
+  _help_require_valid_layout:
+    - By default, if cmake-format cannot successfully fit
+    - everything into the desired linewidth it will apply the
+    - last, most agressive attempt that it made. If this flag is
+    - True, however, cmake-format will print error, exit with non-
+    - zero status code, and write-out nothing
+  require_valid_layout: false
+  _help_layout_passes:
+    - A dictionary mapping layout nodes to a list of wrap
+    - decisions. See the documentation for more information.
+  layout_passes: {}
+encode:
+  _help_emit_byteorder_mark:
+    - If true, emit the unicode byte-order mark (BOM) at the start
+    - of the file
+  emit_byteorder_mark: false
+  _help_input_encoding:
+    - Specify the encoding of the input file. Defaults to utf-8
+  input_encoding: utf-8
+  _help_output_encoding:
+    - Specify the encoding of the output file. Defaults to utf-8.
+    - Note that cmake only claims to support utf-8 so be careful
+    - when using anything else
+  output_encoding: utf-8

CMakeLists.txt

@@ -0,0 +1,42 @@
+cmake_minimum_required(VERSION 3.20)
+
+# Must be done first
+if (APPLE)
+    # Force clang compiler on macOS
+    find_program(CLANGPP "clang++")
+    find_program(CLANG "clang")
+    if (CLANG AND CLANGPP)
+        message(STATUS "Found ${CLANGPP}, ${CLANG}")
+        set(CMAKE_CXX_COMPILER ${CLANGPP})
+        set(CMAKE_C_COMPILER ${CLANG})
+    endif ()
+endif ()
+
+# Options
+option(BUILD_UNIT_TESTS "Build valkey-unit-tests" OFF)
+option(BUILD_TEST_MODULES "Build all test modules" OFF)
+option(BUILD_EXAMPLE_MODULES "Build example modules" OFF)
+
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/")
+project("valkey")
+
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_STANDARD_REQUIRED ON)
+set(CMAKE_C_EXTENSIONS OFF)
+
+include(ValkeySetup)
+add_subdirectory(src)
+add_subdirectory(tests)
+
+# Include the packaging module
+include(Packaging)
+
+# Clear cached variables from the cache
+unset(BUILD_TESTS CACHE)
+unset(CLANGPP CACHE)
+unset(CLANG CACHE)
+unset(BUILD_RDMA_MODULE CACHE)
+unset(BUILD_TLS_MODULE CACHE)
+unset(BUILD_UNIT_TESTS CACHE)
+unset(BUILD_TEST_MODULES CACHE)
+unset(BUILD_EXAMPLE_MODULES CACHE)

README.md

@@ -4,13 +4,12 @@ This project was forked from the open source Redis project right before the tran
 
 This README is just a fast *quick start* document. More details can be found under [valkey.io](https://valkey.io/)
 
-What is Valkey?
---------------
+# What is Valkey?
+
 Valkey is a high-performance data structure server that primarily serves key/value workloads.
 It supports a wide range of native structures and an extensible plugin system for adding new data structures and access patterns.
 
-Building Valkey
---------------
+# Building Valkey using `Makefile`
 
 Valkey can be compiled and used on Linux, OSX, OpenBSD, NetBSD, FreeBSD.
 We support big endian and little endian architectures, and both 32 bit
@@ -43,7 +42,7 @@ supports RDMA as connection module mode. Run:
 
     % make BUILD_RDMA=module
 
-To build with systemd support, you'll need systemd development libraries (such 
+To build with systemd support, you'll need systemd development libraries (such
 as libsystemd-dev on Debian/Ubuntu or systemd-devel on CentOS) and run:
 
     % make USE_SYSTEMD=yes
@@ -71,8 +70,7 @@ More about running the integration tests can be found in
 [tests/README.md](tests/README.md) and for unit tests, see
 [src/unit/README.md](src/unit/README.md).
 
-Fixing build problems with dependencies or cached build options
----------
+## Fixing build problems with dependencies or cached build options
 
 Valkey has some dependencies which are included in the `deps` directory.
 `make` does not automatically rebuild dependencies even if something in
@@ -91,8 +89,7 @@ optimizations (for debugging purposes), and other similar build time options,
 those options are cached indefinitely until you issue a `make distclean`
 command.
 
-Fixing problems building 32 bit binaries
----------
+## Fixing problems building 32 bit binaries
 
 If after building Valkey with a 32 bit target you need to rebuild it
 with a 64 bit target, or the other way around, you need to perform a
@@ -105,8 +102,7 @@ the following steps:
 * Try using the following command line instead of `make 32bit`:
   `make CFLAGS="-m32 -march=native" LDFLAGS="-m32"`
 
-Allocator
----------
+## Allocator
 
 Selecting a non-default memory allocator when building Valkey is done by setting
 the `MALLOC` environment variable. Valkey is compiled and linked against libc
@@ -122,28 +118,25 @@ To compile against jemalloc on Mac OS X systems, use:
 
     % make MALLOC=jemalloc
 
-Monotonic clock
----------------
+## Monotonic clock
 
 By default, Valkey will build using the POSIX clock_gettime function as the
 monotonic clock source.  On most modern systems, the internal processor clock
-can be used to improve performance.  Cautions can be found here: 
+can be used to improve performance.  Cautions can be found here:
     http://oliveryang.net/2015/09/pitfalls-of-TSC-usage/
 
 To build with support for the processor's internal instruction clock, use:
 
     % make CFLAGS="-DUSE_PROCESSOR_CLOCK"
 
-Verbose build
--------------
+## Verbose build
 
 Valkey will build with a user-friendly colorized output by default.
 If you want to see a more verbose output, use the following:
 
     % make V=1
 
-Running Valkey
--------------
+# Running Valkey
 
 To run Valkey with the default configuration, just type:
 
@@ -165,10 +158,10 @@ as options using the command line. Examples:
 All the options in valkey.conf are also supported as options using the command
 line, with exactly the same name.
 
-Running Valkey with TLS:
-------------------
+# Running Valkey with TLS:
+
+## Running manually
 
-### Running manually
 To manually run a Valkey server with TLS mode (assuming `./gen-test-certs.sh` was invoked so sample certificates/keys are available):
 
 * TLS built-in mode:
@@ -204,8 +197,7 @@ Specifying `--tls-replication yes` makes a replica connect to the primary.
 
 Using `--tls-cluster yes` makes Valkey Cluster use TLS across nodes.
 
-Running Valkey with RDMA:
-------------------
+# Running Valkey with RDMA:
 
 Note that Valkey Over RDMA is an experimental feature.
 It may be changed or removed in any minor or major version.
@@ -236,8 +228,7 @@ Or:
     % ibv_devices
 
 
-Playing with Valkey
-------------------
+# Playing with Valkey
 
 You can use valkey-cli to play with Valkey. Start a valkey-server instance,
 then in another terminal try the following:
@@ -256,8 +247,7 @@ then in another terminal try the following:
     (integer) 2
     valkey>
 
-Installing Valkey
------------------
+# Installing Valkey
 
 In order to install Valkey binaries into /usr/local/bin, just use:
 
@@ -289,16 +279,82 @@ system reboots.
 You'll be able to stop and start Valkey using the script named
 `/etc/init.d/valkey_<portnumber>`, for instance `/etc/init.d/valkey_6379`.
 
-Code contributions
------------------
+# Building using `CMake`
+
+In addition to the traditional `Makefile` build, Valkey supports an alternative, **experimental**, build system using `CMake`.
+
+To build and install `Valkey`, in `Release` mode (an optimized build), type this into your terminal:
+
+```bash
+mkdir build-release
+cd $_
+cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/opt/valkey
+sudo make install
+# Valkey is now installed under /opt/valkey
+```
+
+Other options supported by Valkey's `CMake` build system:
+
+## Special build flags
+
+- `-DWITH_TLS=<on|off|module>` enable TLS build for Valkey
+- `-DWITH_RDMA=<off|module>` enable RDMA module build (only module mode supported)
+- `-DWITH_MALLOC=<libc|jemalloc|tcmalloc|tcmalloc_minimal>` choose the allocator to use. Default on Linux: `jemalloc`, for other OS: `libc`
+- `-DWITH_SANITIZER=<address|thread|undefined>` build with address sanitizer enabled
+- `-DBUILD_UNIT_TESTS=[1|0]`  when set, the build will produce the executable `valkey-unit-tests`
+- `-DBUILD_TEST_MODULES=[1|0]`  when set, the build will include the modules located under the `tests/modules` folder
+- `-DBUILD_EXAMPLE_MODULES=[1|0]`  when set, the build will include the example modules located under the `src/modules` folder
+
+## Common flags
+
+- `-DCMAKE_BUILD_TYPE=<Debug|Release...>` define the build type, see cmake manual for more details
+- `-DCMAKE_INSTALL_PREFIX=/installation/path` override this value to define a custom install prefix. Default: `/usr/local`
+- `-G<Generator Name>` generate build files for "Generator Name". By default, CMake will generate `Makefile`s.
+
+## Verbose build
+
+`CMake` generates a user-friendly colorized output by default.
+If you want to see a more verbose output, use the following:
+
+```bash
+make VERBOSE=1
+```
+
+## Troubleshooting
+
+During the `CMake` stage, `CMake` caches variables in a local file named `CMakeCache.txt`. All variables generated by Valkey
+are removed from the cache once consumed (this is done by calling to `unset(VAR-NAME CACHE)`). However, some variables,
+like the compiler path, are kept in cache. To start a fresh build either remove the cache file `CMakeCache.txt` from the
+build folder, or delete the build folder completely.
+
+**It is important to re-run `CMake` when adding new source files.**
+
+## Integration with IDE
+
+During the `CMake` stage of the build, `CMake` generates a JSON file named `compile_commands.json` and places it under the
+build folder. This file is used by many IDEs and text editors for providing code completion (via `clangd`).
+
+A small caveat is that these tools will look for `compile_commands.json` under the Valkey's top folder.
+A common workaround is to create a symbolic link to it:
+
+```bash
+cd /path/to/valkey/
+# We assume here that your build folder is `build-release`
+ln -sf $(pwd)/build-release/compile_commands.json $(pwd)/compile_commands.json
+```
+
+Restart your IDE and voila
+
+# Code contributions
+
 Please see the [CONTRIBUTING.md][2]. For security bugs and vulnerabilities, please see [SECURITY.md][3].
 
-[1]: https://github.com/valkey-io/valkey/blob/unstable/COPYING
-[2]: https://github.com/valkey-io/valkey/blob/unstable/CONTRIBUTING.md
-[3]: https://github.com/valkey-io/valkey/blob/unstable/SECURITY.md
+# Valkey is an open community project under LF Projects
 
-Valkey is an open community project under LF Projects
------------------
 Valkey a Series of LF Projects, LLC
 2810 N Church St, PMB 57274
 Wilmington, Delaware 19802-4447
+
+[1]: https://github.com/valkey-io/valkey/blob/unstable/COPYING
+[2]: https://github.com/valkey-io/valkey/blob/unstable/CONTRIBUTING.md
+[3]: https://github.com/valkey-io/valkey/blob/unstable/SECURITY.md

cmake/Modules/Packaging.cmake

@@ -0,0 +1,44 @@
+set(CPACK_PACKAGE_NAME "valkey")
+
+valkey_parse_version(CPACK_PACKAGE_VERSION_MAJOR CPACK_PACKAGE_VERSION_MINOR CPACK_PACKAGE_VERSION_PATCH)
+
+set(CPACK_PACKAGE_CONTACT "maintainers@lists.valkey.io")
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Valkey is an open source (BSD) high-performance key/value datastore")
+set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_SOURCE_DIR}/COPYING")
+set(CPACK_RESOURCE_FILE_README "${CMAKE_SOURCE_DIR}/README.md")
+set(CPACK_STRIP_FILES TRUE)
+
+valkey_get_distro_name(DISTRO_NAME)
+message(STATUS "Current host distro: ${DISTRO_NAME}")
+
+if (DISTRO_NAME MATCHES ubuntu
+    OR DISTRO_NAME MATCHES debian
+    OR DISTRO_NAME MATCHES mint)
+    message(STATUS "Adding target package for ${DISTRO_NAME}")
+    set(CPACK_PACKAGING_INSTALL_PREFIX "/opt/valkey")
+    # Debian related parameters
+    set(CPACK_DEBIAN_PACKAGE_MAINTAINER "Valkey contributors")
+    set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
+    set(CPACK_DEBIAN_FILE_NAME DEB-DEFAULT)
+    set(CPACK_GENERATOR "DEB")
+endif ()
+
+include(CPack)
+unset(DISTRO_NAME CACHE)
+
+# ---------------------------------------------------
+# Create a helper script for creating symbolic links
+# ---------------------------------------------------
+write_file(
+    ${CMAKE_BINARY_DIR}/CreateSymlink.sh
+    "\
+#!/bin/bash                                                 \n\
+if [ -z \${DESTDIR} ]; then                                 \n\
+    # Script is called during 'make install'                \n\
+    PREFIX=${CMAKE_INSTALL_PREFIX}/bin                      \n\
+else                                                        \n\
+    # Script is called during 'make package'                \n\
+    PREFIX=\${DESTDIR}${CPACK_PACKAGING_INSTALL_PREFIX}/bin \n\
+fi                                                          \n\
+cd \$PREFIX                                                 \n\
+ln -sf \$1 \$2")