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Fix using Pixi-provided compilers on Linux #2123

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Fix using Pixi-provided compilers on Linux #2123

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8f0f9eb
[SCons] Allow CC/CXX/AR/FC env variables for compiler selection
speth May 30, 2026
ab2ce49
Use correct compiler toolchain package in Linux Pixi environments
speth May 30, 2026
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15 changes: 8 additions & 7 deletions SConstruct
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Original file line number Diff line number Diff line change
Expand Up @@ -313,11 +313,11 @@ config_options = [
Option(
"AR",
"The archiver to use.",
"${AR}"),
os.environ.get("AR") or "${AR}"),
Option(
"CXX",
"The C++ compiler to use.",
"${CXX}"),
os.environ.get("CXX") or "${CXX}"),
Option(
"cxx_flags",
"""Compiler flags passed to the C++ compiler only. Separate multiple
Expand All @@ -330,7 +330,7 @@ config_options = [
Option(
"CC",
"The C compiler to use. This is only used to compile CVODE.",
"${CC}"),
os.environ.get("CC") or "${CC}"),
Option(
"cc_flags",
"""Compiler flags passed to both the C and C++ compilers, regardless of
Expand Down Expand Up @@ -397,10 +397,11 @@ config_options = [
"default", ("y", "n", "default")),
PathOption(
"FORTRAN",
"""The Fortran (90) compiler. If unspecified, the builder will look for a
compatible compiler (pgfortran, gfortran, ifort, ifx, g95) in the 'PATH'
environment variable. Used only for compiling the Fortran 90 interface.""",
"", PathVariable.PathAccept),
"""The Fortran (90) compiler. If unspecified, the 'FC' environment variable is
used if set; otherwise the builder will look for a compatible compiler
(pgfortran, gfortran, ifort, ifx, g95) in the 'PATH' environment variable.
Used only for compiling the Fortran 90 interface.""",
os.environ.get("FC") or "", PathVariable.PathAccept),
Option(
"FORTRANFLAGS",
"Compilation options for the Fortran (90) compiler.",
Expand Down
8 changes: 7 additions & 1 deletion pixi.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -31,8 +31,14 @@ pytest = ">=9.0.2,<10"
"ruamel.yaml" = ">=0.19.1,<0.20"
jinja2 = ">=3.1.6,<4"

# Provide a self-consistent compiler toolchain matching the conda-forge-built
# dependencies. The activation packages set CC/CXX/AR, which SConstruct honors. To build
# with the system compiler instead, set `CXX = "g++"` and `CC = "gcc"` in cantera.conf.
[feature.core.target.linux-64.dependencies]
clangxx = ">=18.0"
gxx_linux-64 = ">=13"

[feature.core.target.linux-aarch64.dependencies]
gxx_linux-aarch64 = ">=13"

[feature.samples.dependencies]
pandas = ">=3.0.0,<4"
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