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Standard make path (#1353)

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Modifies download-cosmocc.sh to maintain a .cosmocc/current symlink that
always points to the most recently downloaded version of cosmocc. We can
use this to point at a canonical make for a bootstrapped repository. For
first-time builds, we suggest: https://cosmo.zip/pub/cosmos/bin/make and
have updated the docs in a few places to mention this.

Fixes the other part of #1346.
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Steven Dee (Jōshin) 2025-01-05 20:47:34 -08:00 • committed by GitHub
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23
README.md
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@ -87,15 +87,22 @@ ape/apeinstall.sh
```
You can now build the mono repo with any modern version of GNU Make. To
make life easier, we've included one in the cosmocc toolchain, which is
guaranteed to be compatible and furthermore includes our extensions for
doing build system sandboxing.
bootstrap your build, you can install Cosmopolitan Make from this site:
https://cosmo.zip/pub/cosmos/bin/make
E.g.:
```sh
build/bootstrap/make -j8
curl -LO https://cosmo.zip/pub/cosmos/bin/make
./make -j8
o//examples/hello
```
After you've built the repo once, you can also use the make from your
cosmocc at `.cosmocc/current/bin/make`. You might even prefer to alias
make to `$COSMO/.cosmocc/current/bin/make`.
Since the Cosmopolitan repository is very large, you might only want to
build one particular thing. Here's an example of a target that can be
compiled relatively quickly, which is a simple POSIX test that only
@ -103,7 +110,7 @@ depends on core LIBC packages.
```sh
rm -rf o//libc o//test
build/bootstrap/make o//test/posix/signal_test
.cosmocc/current/bin/make o//test/posix/signal_test
o//test/posix/signal_test
```
@ -112,21 +119,21 @@ list out each individual one. For example if you wanted to build and run
all the unit tests in the `TEST_POSIX` package, you could say:
```sh
build/bootstrap/make o//test/posix
.cosmocc/current/bin/make o//test/posix
```
Cosmopolitan provides a variety of build modes. For example, if you want
really tiny binaries (as small as 12kb in size) then you'd say:
```sh
build/bootstrap/make m=tiny
.cosmocc/current/bin/make m=tiny
```
You can furthermore cut out the bloat of other operating systems, and
have Cosmopolitan become much more similar to Musl Libc.
```sh
build/bootstrap/make m=tinylinux
.cosmocc/current/bin/make m=tinylinux
```
For further details, see [//build/config.mk](build/config.mk).