gh-106962: Detect mpicc in configure.ac #106961
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hen compiling Python with the MPI wrapper around the GNU C-compilers: mpicc, the configure script that determines the compiler options sees mpicc as the intel compiler because of the 'icc' in the name, and applies the fp-model strict option to the arguments, which is invalid syntax for GCC, causing multiple compile time errors with recent GCC versions: gcc: error: unrecognized command-line option ‘-fp-model’; did you mean ‘-fipa-modref’? By first filtering out the mpicc compiler case, this error is prevented.
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All commit authors signed the Contributor License Agreement. |
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Most changes to Python require a NEWS entry. Please add it using the blurb_it web app or the blurb command-line tool. |
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This does not only apply to configure.ac, but exactly the same thing to the main configure script. Have created issue number: 106962 |
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You also need to regenerate |
erlend-aasland
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Most changes to Python require a NEWS entry. Please add it using the blurb_it web app or the blurb command-line tool. |
erlend-aasland
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Jul 22, 2023
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| case "$CC" in | ||
| *mpicc*) | ||
| CFLAGS_NODIST="$CFLAGS_NODIST" |
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Strictly, this line is not needed; we could for example do:
Suggested change
| CFLAGS_NODIST="$CFLAGS_NODIST" |
I'm also fine with the current line.
Contributor
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Thanks @LukasvdWiel for the PR, and @erlend-aasland for merging it 🌮🎉.. I'm working now to backport this PR to: 3.12. |
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GH-107081 is a backport of this pull request to the 3.12 branch. |
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Don't let autoconf mistake MPI compilers for Intel compilers; filter out the MPI case to prevent Intel specific options from being applied. (cherry picked from commit 9a6b278) Co-authored-by: Lukas van de Wiel <[email protected]>
erlend-aasland
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Don't let autoconf mistake MPI compilers for Intel compilers; filter out the MPI case to prevent Intel specific options from being applied. (cherry picked from commit 9a6b278) Co-authored-by: Lukas van de Wiel <[email protected]>
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Don't let autoconf mistake MPI compilers for Intel compilers; filter out the MPI case to prevent Intel specific options from being applied.
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Don't let autoconf mistake MPI compilers for Intel compilers; filter out the MPI case to prevent Intel specific options from being applied.
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title:
Fixing Python configure script to handle MPI wrapper around GCC compiler.
summary of the changes made:
Added mpicc to the list of possible compilers that the configure script checks for.
Issue: gh-106962
Full description:
When compiling Python with the MPI wrapper around the GNU C-compilers: mpicc, the configure script that determines the compiler options sees mpicc as the intel compiler because of the 'icc' in the name, and applies the fp-model strict option to the arguments, which is invalid syntax for GCC, causing multiple compile time errors with recent GCC versions:
gcc: error: unrecognized command-line option ‘-fp-model’; did you mean ‘-fipa-modref’?
By first filtering out the mpicc compiler case, this error is prevented.