lzbench: Add new package

[gxcreator]

📦 Package Details

Maintainer: @gxcreator

Description:
lzbench is an in-memory benchmark for open-source compression algorithms. It integrates multiple compression libraries into a single executable and allows for easy comparison of compression speed, decompression speed, and compression ratio.

https://github.com/inikep/lzbench.git

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🧪 Run Testing Details

• OpenWrt Version: SNAPSHOT r31193-605543bc7b
• OpenWrt Target/Subtarget: Mediatek ARM/MT7622
• OpenWrt Device: RT3200_UBI (Linksys E8450 UBI)

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✅ Formalities

• I have reviewed the CONTRIBUTING.md file for detailed contributing guidelines.

If your PR contains a patch:

• It can be applied using git am
• It has been refreshed to avoid offsets, fuzzes, etc., using

  make package/<your-package>/refresh V=s

• It is structured in a way that it is potentially upstreamable
  _{(e.g., subject line, commit description, etc.)
  We must try to upstream patches to reduce maintenance burden.}

[GeorgeSapkin]

Please add a commit description with a reason for introducing this package or at least its description.

[gxcreator]

Please add a commit description with a reason for introducing this package or at least its description.

Done

[BKPepe]

I have briefly reviewed this package and have some feedback. However, I will not be using lzbench on the router, and it is uncertain whether others will find it useful. Therefore, I suggest leaving the decision to merge this package into the repository to someone else.

[BKPepe]

I would say this does not make any sense as we are adding cflags below.

Suggested change

TARGET_CFLAGS := $(filter-out -O%,$(TARGET_CFLAGS))

I am thinking that we can drop this.

[BKPepe]

Do we need to have our own Build/Compile section? Can not we use the default one?

Default one is:

define Build/Compile/Default
        +$(MAKE_VARS) \
        $(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR)/$(MAKE_PATH) \
                $(MAKE_FLAGS) \
                $(1);
endef

See:
https://github.com/openwrt/openwrt/blob/915a57ccd9086db88ee74cfa531ff13f8652a447/include/package-defaults.mk#L143

I dropped this and it works.

Suggested change

	define Build/Compile
	$(MAKE) -C $(PKG_BUILD_DIR) \
	$(MAKE_FLAGS)
	endef

[Copilot]

Pull Request Overview

This PR adds a new package called lzbench to the OpenWrt package collection. lzbench is an in-memory benchmark tool for comparing open-source compression algorithms, integrating multiple compression libraries into a single executable for easy performance comparison.

Key changes:

• New package definition with proper metadata and dependencies
• Custom build configuration that disables most optional compression libraries to minimize dependencies
• Standard OpenWrt package structure with install rules

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[Copilot]

The TARGET_CFLAGS optimization level filtering is placed after the Build/Compile definition but before MAKE_FLAGS. This ordering could be confusing. Consider moving this line to be grouped with the MAKE_FLAGS definition or add a comment explaining why optimization flags are being removed.

Suggested change

	# Remove optimization flags from TARGET_CFLAGS to avoid overriding package-specific optimization settings

[hnyman]

I highly doubt that pre-compiling the compression test bench binaries for all our architectures is worthwhile.
So, like BKPepe, I am hesitant to add this. NAK from me.