[Buildroot] systemd 245 build issues with the old codesourcery ARM 2014.05 toolchain

[Yann E. MORIN <yann.morin.1998@free.fr>]

Romain, All,

On 2020-04-04 19:43 +0200, Romain Naour spake thusly:
> Since the last systemd bump to version 245, all our systemd based tests are
> failing to build:
[--SNIP--]
> This is due to the following build issue:
> ../src/shared/gpt.c:7:9: error: initializer element is not constant
>          { GPT_ROOT_X86,              "root-x86"              },
[--SNIP--]
> While searching for "error: initializer element is not constant" message, I
> noticed a note about gcc 5 change about "Initializing statics with compound
> literals":
> 
> https://gcc.gnu.org/gcc-5/porting_to.html
> 
> I'm not sure it's worth the effort to patch and try to upstream a patch to
> systemd for the sake of building systemd with such old compiler (gcc < 5.0).

What about this patch:

    diff --git a/package/systemd/Config.in b/package/systemd/Config.in
    index bd638477a0..1280d82902 100644
    --- a/package/systemd/Config.in
    +++ b/package/systemd/Config.in
    @@ -19,6 +19,7 @@ menuconfig BR2_PACKAGE_SYSTEMD
     	depends on !BR2_STATIC_LIBS # kmod
     	depends on BR2_TOOLCHAIN_HAS_THREADS # dbus
     	depends on BR2_USE_MMU # dbus
    +	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
     	select BR2_PACKAGE_HAS_UDEV
     	select BR2_PACKAGE_DBUS # runtime dependency only
     	select BR2_PACKAGE_LIBCAP
    diff --git a/system/Config.in b/system/Config.in
    index c8c5be40e0..8c1d47f13f 100644
    --- a/system/Config.in
    +++ b/system/Config.in
    @@ -121,6 +121,7 @@ config BR2_INIT_SYSTEMD
     	depends on BR2_USE_MMU
     	depends on !BR2_STATIC_LIBS
     	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
    +	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
     	select BR2_ROOTFS_MERGED_USR
     	select BR2_PACKAGE_SYSTEMD
     

Regards,
Yann E. MORIN.

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