Re: Issues with cross-compiling

[Jaap Keuter <jaap.keuter () xs4all nl>]

Hi,

Maybe buildroot can give some inspiration:

https://git.buildroot.net/buildroot/tree/package/wireshark

Thanks,
Jaap

> On 17 Jan 2022, at 03:01, Glen Huang <heyhgl () gmail com> wrote:
>
> Hi,
>
> I’m trying to create an OpenWrt package for Wireshark.
>
> I think I’m pretty close. However, I got stuck at lemon, which if I’m not wrong, should be compiled by my build 
> machine’s compiler. From the source code, I found out it supports the LEMON_C_COMPILER variable, which I assigned 
> with the build machine’s compiler, but after compiling, CMAKE used the target platform’s linking flags for linking, 
> which apparently failed. I’m not very familiar with CMAKE, so would appreciate some help.
>
> Cross-compiling has cropped up here a few times in the past decades, but the ones I managed to find are all 
> pertaining to Wireshark’s autotools era, so they’re not particularly helpful, at least for my limited knowledge in 
> this area.
>
> Here is the OpenWrt package’s Makefile I have come up with so far:
>
> include $(TOPDIR)/rules.mk
>
> PKG_NAME:=wireshark
> PKG_VERSION:=3.6.1
> PKG_RELEASE:=1
>
> PKG_SOURCE_URL:=https://www.wireshark.org/download/src/
> PKG_SOURCE:=wireshark-$(PKG_VERSION).tar.xz
> PKG_HASH:=0434eda8fb6bf88e2b42a67eb5d1de254a67d505bec3bb51fee9d7cad7925a38
>
> PKG_BUILD_PARALLEL:=1
> CMAKE_INSTALL:=1
>
> include $(INCLUDE_DIR)/package.mk
> include $(INCLUDE_DIR)/cmake.mk
>
> define Package/wireshark
>  SECTION:=net
>  CATEGORY:=Network
>  TITLE:=Network protocol analyzer
>  URL:=https://www.wireshark.org/
>  DEPENDS:=+libpcap +glib2 +libgcrypt +libcares
> endef
>
> define Package/wireshark/description
>        Network protocol analyzer
> endef
>
> CMAKE_OPTIONS += \
>        -DCMAKE_CROSSCOMPILING=1 \
>        -DHAVE_C99_VSNPRINTF=TRUE \
>        -DLEMON_C_COMPILER=$(CMAKE_HOST_C_COMPILER) \
>        -DBUILD_wireshark=OFF \
>        -DBUILD_androiddump=OFF \
>        -DBUILD_ciscodump=OFF \
>        -DBUILD_idl2wrs=OFF
>
> define Package/wireshark/install
>        # figure out later
> endef
>
> $(eval $(call BuildPackage,wireshark))
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