Support default lib paths for m1 macs and MacPorts installations

[ttytm]

Currently, when trying to run e.g., examples/mpi_basic_example/main.v on my m1 mac I'm getting:

/Users/t/.vmodules/vsl/mpi/cmpi.h:4:10: fatal error: 'mpi.h' file not found
#include "mpi.h"
         ^~~~~~~
1 error generated.
...
==================
(Use `v -cg` to print the entire error message)

builder error: 
==================

The changes in this PR add support for the default m1 library install paths and allow to compile it.

As ref., V does this kind of imports e.g. here:
https://github.com/vlang/v/blob/25f54669e25c58a6d6b62e670ec8940ed542f386/vlib/net/openssl/c.v#L19-L27

Alternatively, vdocs have a short mention about the differing paths for macos https://github.com/vlang/v/blob/25f54669e25c58a6d6b62e670ec8940ed542f386/examples/call_v_from_c/README.md#on-mac-osx.

Summary by CodeRabbit

• Chore: Enhanced compatibility across different operating systems including Linux, FreeBSD, OpenBSD, and macOS. This update ensures smoother build processes and proper functioning of the software on these platforms.
• New Feature: Added support for Intel, M1 brew, and MacPorts paths. This change improves the software's adaptability and ensures it can be compiled and linked correctly on a wider range of systems.
• Maintenance: Updated the compiler flags to include or exclude certain directories, enhancing the reliability and performance of the software across different operating systems.

[coderabbitai]

Walkthrough

The changes across the files primarily focus on updating compiler flags for different operating systems, including Linux, FreeBSD, OpenBSD, and macOS. The updates add additional include and library paths for Intel, M1 brew, and MacPorts, ensuring proper compilation and linking across various platforms.

Changes

File(s)	Summary
fft/_cflags.c.v, mpi/_cflags.c.v	Updated flags for Linux, FreeBSD, OpenBSD, and macOS. Added paths for Intel, M1 brew, and MacPorts to ensure proper compilation and linking.
inout/h5/_cflags.c.v	Added include and library paths for darwin platform, including paths for Intel, M1 brew, and MacPorts, to ensure correct compilation and linking.
vlas/cflags_d_cblas.v, vlas/cflags_notd_cblas.v	Added additional paths for include and library directories for different platforms (Intel, M1 brew, and MacPorts) in the macOS section.

🐇

In the land of code, where the shadows lie,

The rabbit hops, under the binary sky.

Paths are laid, for the brew and port,

Ensuring compilation is of the right sort.

Flags are raised, for each OS in sight,

Guiding the code, through the build night.

So, celebrate the changes, for they are fine,

In the land of code, where the bits align. 🎉

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Review Status

Actionable comments generated: 0

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Commits

Files that changed from the base of the PR and between 7d5ee50 and c68ba7b.

Files selected for processing (5)

• fft/_cflags.c.v (1 hunks)
• inout/h5/_cflags.c.v (1 hunks)
• mpi/_cflags.c.v (1 hunks)
• vlas/cflags_d_cblas.v (1 hunks)
• vlas/cflags_notd_cblas.v (1 hunks)

Files skipped from review due to trivial changes (5)

• fft/_cflags.c.v
• inout/h5/_cflags.c.v
• mpi/_cflags.c.v
• vlas/cflags_d_cblas.v
• vlas/cflags_notd_cblas.v