How to speed up compiling gcc and ghc on High Sierra?

[crazyi]

I am a Hackintonisher, and have to stuck at High Sierra because my GPU is no longer supported on Mojave and newer macos. Since High Sierra was officially dropped supports by the Homebrew team and no compiled bottles available. I have to complied the packages I had installed from the sources. But the compiling time for some packages (eg. gcc, ghc) is too long to be ignored. If there is a way to reduce the compiling time?

==> Upgrading gcc 10.2.0_3 -> 10.2.0_4 
==> Downloading https://raw.githubusercontent.com/Homebrew/formula-patches/6a83f36d/gcc/bigsur_2.patch
Already downloaded: /Users/crazyi/Library/Caches/Homebrew/downloads/c0b9dca392d2e8496747001f634c04a4bc2f5c63672b963f3c4f217e70aaa258--bigsur_2.patch
==> Downloading https://ftp.gnu.org/gnu/gcc/gcc-10.2.0/gcc-10.2.0.tar.xz
Already downloaded: /Users/crazyi/Library/Caches/Homebrew/downloads/c8d4ca732a98ae691d04472b15de6d9e06a09016499af6ff16c4f55081bfc6b9--gcc-10.2.0.tar.xz
==> Patching
==> Applying bigsur_2.patch
patching file gcc/config/host-darwin.c
patching file gcc/config/darwin-c.c
patching file gcc/config/darwin-driver.c
patching file gcc/testsuite/gcc.dg/darwin-minversion-link.c
patching file gcc/config/darwin-driver.c
patching file gcc/config/darwin-driver.c
patching file libsanitizer/configure.tgt
patching file gcc/configure
Hunk #1 succeeded at 15485 (offset -5 lines).
patching file libatomic/configure
patching file libbacktrace/configure
patching file libcc1/Makefile.am
patching file libcc1/Makefile.in
patching file libcc1/configure
patching file libcc1/configure.ac
patching file libffi/configure
patching file libgfortran/configure
patching file libgomp/Makefile.in
patching file libgomp/configure
patching file libhsail-rt/configure
patching file libitm/configure
patching file libitm/configure.tgt
patching file libobjc/configure
patching file libphobos/configure
patching file libquadmath/configure
patching file libsanitizer/configure
patching file libsanitizer/configure.tgt
patching file libssp/configure
patching file libstdc++-v3/configure
patching file libtool.m4
patching file libvtv/configure
patching file zlib/configure
==> ../configure --build=x86_64-apple-darwin17 --prefix=/usr/local/Cellar/gcc/10.2.0_4 --libdir=/usr/local/Cellar/gcc/10
==> make BOOT_LDFLAGS=-Wl,-headerpad_max_install_names
==> make install
🍺  /usr/local/Cellar/gcc/10.2.0_4: 1,467 files, 331.8MB, built in 143 minutes 15 seconds
Removing: /usr/local/Cellar/gcc/10.2.0_3... (1,467 files, 331.8MB)

==> Upgrading ghc 8.10.3 -> 8.10.4 
==> Downloading https://ftp.gnu.org/gnu/gmp/gmp-6.2.1.tar.xz
Already downloaded: /Users/crazyi/Library/Caches/Homebrew/downloads/dbc159da5e9c49d42a895dec18359bdc85f04bd456271284702071c136faf214--gmp-6.2.1.tar.xz
==> Downloading https://downloads.haskell.org/~ghc/8.10.4/ghc-8.10.4-x86_64-apple-darwin.tar.xz
######################################################################## 100.0%
==> Downloading https://downloads.haskell.org/~ghc/8.10.4/ghc-8.10.4-src.tar.xz
######################################################################## 100.0%
==> ./configure --prefix=/usr/local/Cellar/ghc/8.10.4/libexec/integer-gmp --with-pic --disable-shared --build=core2-appl
==> make
==> make install
==> ./configure --prefix=/private/tmp/ghc-20210220-58181-m7vg3j/ghc-8.10.4/binary --with-gmp-includes=/usr/local/Cellar/
==> make install
==> ./configure --prefix=/usr/local/Cellar/ghc/8.10.4 --with-gmp-includes=/usr/local/Cellar/ghc/8.10.4/libexec/integer-g
==> make
==> make install
==> /usr/local/Cellar/ghc/8.10.4/bin/ghc-pkg recache
🍺  /usr/local/Cellar/ghc/8.10.4: 6,907 files, 1.5GB, built in 333 minutes 48 seconds
Removing: /usr/local/Cellar/ghc/8.10.3... (6,905 files, 1.5GB)
Removing: /Users/crazyi/Library/Caches/Homebrew/ghc--binary--8.10.3.tar.xz... (184.9MB)
Removing: /Users/crazyi/Library/Caches/Homebrew/ghc--8.10.3.tar.xz... (19.0MB)

[SMillerDev]

There isn't really a way other than making your own copy with just the parts you need.

[crazyi]

There isn't really a way other than making your own copy with just the parts you need.
I wonder if -jn can be added to speed up the parallel compilation?

[SMillerDev]

Brew already adds -j to any make invocation

[tjluoma]

Might I suggest that you consider MacPorts for older versions of macOS? I have a few Macs that I cannot update either, so I've switched to MacPorts on those computers while continuing to use brew on my newer ones.

MacPorts - Download & Installation has an installer for High Sierra.

[crazyi]

thx, I will have a try.