change source URL for boost

The old URL does not work, so this changes it to a yoctoproject url.

Tested: Clean build after deleting subprojects/boost_1_75_0/

Signed-off-by: John Edward Broadbent <

change source URL for boost

The old URL does not work, so this changes it to a yoctoproject url.

Tested: Clean build after deleting subprojects/boost_1_75_0/

Signed-off-by: John Edward Broadbent <jebr@google.com>
Change-Id: I58e71035af018e9efc7e08f83e61716f561ea455

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Add back rtti

The bug mentioned in the comment has been resolved in boost 1.75.
Reenable this to drop our binary size again. As a consequence of this,
this commit also upgrades the subproject depen

Add back rtti

The bug mentioned in the comment has been resolved in boost 1.75.
Reenable this to drop our binary size again. As a consequence of this,
this commit also upgrades the subproject dependencies to 1.75 from 1.73.
They technically weren't updated to 1.74, so I'm not sure if anyone
really uses these anymore.

Tested:
Code builds with this enabled.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: Id86a6358dc5a73a8b5e386661f9317f24cdbe21c

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Enable Meson Build System & remove cmake support

- This commit enables the support for meson build system for
bmcweb and also remove the cmake support

- The inital thought of migrating to meson b

Enable Meson Build System & remove cmake support

- This commit enables the support for meson build system for
bmcweb and also remove the cmake support

- The inital thought of migrating to meson build system was based
on [link](https://mesonbuild.com/Simple-comparison.html)

- Other things to praise about meson are its simplicity and userfriendly ness.
It also have native support for modern tools such as precompiled headers,
coverage, Valgrind , unity builds e.t.c

- This commit also support the automatic download and setup of dependencies
if they are not found in usual places using meson wraps that are already
available in [wrap db](https://wrapdb.mesonbuild.com/)

- For few dependencies like boost, boost-url which does not have meson
wrap support yet, i have misused the meson subproject command to download
boost & boot-url and build against them if they are not found in usual
places.

- For boost & boost-url the subproject command will always fail as meson
supports other meson projects as subprojects but it will always download
the source, and since we dont actually build boost/boost-url but just use
the the source headers this should not be a problem.

- Cmake options removed:

- BUILD_STATIC_LIBS has been removed as it is not being used any where as per the
review comments.

- By default the meson wraps are enabled and it downloads the dependencies if they
are not found, and via bitbake this behaviour is disabled by default as download
fallback feature is disabled.

- This commit also adds the README, changes for bmcweb as well.

- The meta-* layer changes are also pushed and marked as WIP under bmcweb_meson_port
topic.

Tested By :
===========
1. Compilation is passed without error or warning in both arm & x86 sdks that
are populated by yocto.
2. The unittests are also passed on both x86 & arm machines.
3. Compilation passed with various build types supported by meson (debug,debugoptimized,
relase)
4. modified the meta-phosphor & meta-ibm to leverage meson build for bmcweb, and loaded
the resulted image on qemu & real machine, checked the bmcweb status and was also able
to pull the web-gui on both.
5. Tested few common commands related to session service & network service manually on a
real machine and also also had run a CT regression bucket, and it looked clean.

The binary sizes when bmcweb is compiled via bitbake(using meta-ibm) are :
cmake: 3100080 bytes approx (3 MB)
meson: 2822596 bytes approx (2.7 MB)

1:1 equivalent hash is not possible due to couple of things:
1. The build types in meson does not have a 1:1 mapping with cmake build types.
2. Meson adds below mentioned compiler & linker flags than cmake as a part of
warning_level & build types

CXXFLAGS :' -O2 -pipe -g -feliminate-unused-debug-types -fdiagnostics-color=always
-D_FILE_OFFSET_BITS=64 -Winvalid-pch -DNDEBUG'
LDFLAGS : ' -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -Wl,--no-undefined,-Wl,--end-group'

Tried to match the compile commands in both cmake & meson as much as possible and this
is what i could get.I have attached the compile_commands.json for both duing an yocto
full build in the [link](https://gofile.io/d/gM80fw) for reference.

Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
Change-Id: Ia65689fdacb8c398dd0a019258369b2442fad2f3

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