The command as merged uses the compiler target as the compiler path.

I have run and tested a build with this command.

@Mugundanmcw - is this correct?

Content is reviewed fairly carefully, and should be up to the
same standard as the rest of the docs now.

Uses Mermaid to render it as a diagram in the html docs.

The doc build is now clean of warnings again.

This only fixes Markdown syntax, and adds a few headers to bring
some structure into the long list of variables that influence the
build. It does not add or remove variables.

I went through the wiki pages and found two pages with edits that
weren't reflected in the html docs yet, so syncing that content here.

when I use static link method to compile , result is undefined with pthread_create, so we should add -lpthread

* Fix typo
* Improve platforms sentence

* Update backers link to OpenBLAS repo
* Remove reference to Bountysource

* Fold "Users of OpenBLAS", "Publications", "Mailing list", "Donation" pages into "About"
* Remove full license
* Remove outdated TODO and machine list pages
* Shorter titles for CI and distributing pages
* Link to GotoBLAS readme in repo
* Brief description of OpenBLAS in homepage
* Move acknowledgements into About page
* Remove manual TOC in FAQ docs

* Fix more broken links
* Move FAQ last
* Fold all install-y content into `install.md`
* Fix header levels
* Fold `download.md` contents into `install.md`
* Fix cross-references
* Ordered navigation
* Add logo to docs
* Make doc pages more consistent

This touches on the following:

- build configurations
- naming of symbols, shared/static libraries and other build outputs
  like pkg-config and CMake files
- (in more detail) guidance on ILP64 builds

It tries to explain that, while this is only guidance and there may be
reasons to deviate from that, for some build options there are best
practices, and for some others there are choices to make.

It also links to a number of well-maintained build recipes in order
to help packagers of other distros make choices.

Closes gh-3798

[skip ci]