{gambit,gerbil}-scheme: switch to openssl@3

[carlocab]

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---

• gambit-scheme: switch to openssl@3
• gerbil-scheme: switch to openssl@3

[p-linnane]

Ventura has been running for 2 days, which is way longer than the other jobs.

[cho-m]

Made draft to test out GCC. NixOS comment referencing Gambit's last benchmarks in https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/compilers/gambit/build.nix#L5-L9

# Note that according to a benchmark run by Marc Feeley on May 2018,
# clang is 10x (with default settings) to 15% (with -O2) slower than GCC at compiling
# Gambit output, producing code that is 3x slower. IIRC the benchmarks from Gambit@30,
# the numbers were still heavily in favor of GCC in October 2019.
# Thus we use GCC over clang, even on macOS.

Either way, Ventura Clang (LLVM 15) seems to have some issue.

[carlocab]

Looks reasonable to me. We could probably make gcc :build-only though, and possible continue to build gerbil-scheme with Clang.

[carlocab]

No linkage on macOS. Probably just pure C code. In which case this can probably just be :build-only.

[cho-m]

It saves the compiler as default in config file (i.e. gcc-13). The GCC optimizations also add some GCC-specific flags to config file.

[carlocab]

Ok, fair enough.

[cho-m]

Specifically, file bin/gambcomp-C sets up default values:

# The following settings are determined by the configure script.

C_COMPILER="gcc-13"
C_PREPROC="gcc-13 -E"

FLAGS_OBJ=" -Wno-deprecated-declarations -I\"/usr/local/opt/openssl@3/include\"   -Wno-unused -Wno-write-strings -Wdisabled-optimization -fwrapv -fno-strict-aliasing -fno-trapping-math -fno-math-errno -fschedule-insns2 -fmodulo-sched -freschedule-modulo-scheduled-loops -fomit-frame-pointer -fPIC -fno-common "
FLAGS_DYN="  -Wno-deprecated-declarations -I\"/usr/local/opt/openssl@3/include\"  -bundle  -Wno-unused -Wno-write-strings -Wdisabled-optimization -fwrapv -fno-strict-aliasing -fno-trapping-math -fno-math-errno -fschedule-insns2 -fmodulo-sched -freschedule-modulo-scheduled-loops -fomit-frame-pointer -fPIC -fno-common   -flat_namespace -undefined suppress"
FLAGS_LIB="  -Wno-deprecated-declarations -I\"/usr/local/opt/openssl@3/include\"  -dynamiclib -install_name \$(libdir)/\$(LIBRARY)\$(LIB_VERSION_SUFFIX)   -flat_namespace -undefined suppress"
FLAGS_EXE="  -Wno-deprecated-declarations -I\"/usr/local/opt/openssl@3/include\"   -Wno-unused -Wno-write-strings -Wdisabled-optimization -fwrapv -fno-strict-aliasing -fno-trapping-math -fno-math-errno -fschedule-insns2 -fmodulo-sched -freschedule-modulo-scheduled-loops -fomit-frame-pointer -fPIC -fno-common  "

FLAGS_OPT=" -O1"
FLAGS_OPT_RTS=" -O3"

In separate PR, I may add a note and maybe fix up OpenSSL path as above shows /usr/local when I compiled on ARM. Only may cause an issue if someone also has Rosetta.

[carlocab]

Let's see if we can fix that already now...

[carlocab]

gambit-scheme appears to only use C, so continuing to compile this with clang will probably work (unless there are also performance problems here).

[cho-m]

One thing was the previous hang was on gerbil-scheme. Also, GCC optimization flags makes Clang harder to use (but it seems recommended by upstream and used by other repositories).

[carlocab]

No linkage, can also probably be :build.

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