Build uses wrong flags with gcc: `gcc-mp-14: error: unrecognized command-line option '-fprofile-instr-generate'; did you mean '-fprofile-generate'?`
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build
OS-mac
type-bug
- Dominant language
- Python
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Description
Bug report
Bug description:
Build fails on macOS with gcc when profile option is enabled, since the build uses unsupported flags without checking:
Building with support for profile generation:
/Library/Developer/CommandLineTools/usr/bin/make build_all CFLAGS_NODIST=" -fprofile-instr-generate" LDFLAGS_NODIST=" -fprofile-instr-generate" LIBS="-lintl -ldl -framework CoreFoundation"
make[2]: Entering directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python313/python313/work/Python-3.13.2'
/opt/local/bin/gcc-mp-14 -c -fno-strict-overflow -Wsign-compare -fno-common -dynamic -DNDEBUG -g -O3 -Wall -pipe -Os -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -arch x86_64 -fno-semantic-interposition -flto -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -fvisibility=hidden -fprofile-instr-generate -I./Include/internal -I./Include/internal/mimalloc -I. -I./Include -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -DPy_BUILD_CORE -o Programs/python.o ./Programs/python.c
/opt/local/bin/gcc-mp-14 -c -fno-strict-overflow -Wsign-compare -fno-common -dynamic -DNDEBUG -g -O3 -Wall -pipe -Os -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -arch x86_64 -fno-semantic-interposition -flto -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -fvisibility=hidden -fprofile-instr-generate -I./Include/internal -I./Include/internal/mimalloc -I. -I./Include -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -DPy_BUILD_CORE -o Parser/token.o Parser/token.c
/opt/local/bin/gcc-mp-14 -c -fno-strict-overflow -Wsign-compare -fno-common -dynamic -DNDEBUG -g -O3 -Wall -pipe -Os -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -arch x86_64 -fno-semantic-interposition -flto -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -fvisibility=hidden -fprofile-instr-generate -I./Include/internal -I./Include/internal/mimalloc -I. -I./Include -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -DPy_BUILD_CORE -o Parser/pegen.o Parser/pegen.c
/opt/local/bin/gcc-mp-14 -c -fno-strict-overflow -Wsign-compare -fno-common -dynamic -DNDEBUG -g -O3 -Wall -pipe -Os -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -arch x86_64 -fno-semantic-interposition -flto -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -fvisibility=hidden -fprofile-instr-generate -I./Include/internal -I./Include/internal/mimalloc -I. -I./Include -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -DPy_BUILD_CORE -o Parser/pegen_errors.o Parser/pegen_errors.c
/opt/local/bin/gcc-mp-14 -c -fno-strict-overflow -Wsign-compare -fno-common -dynamic -DNDEBUG -g -O3 -Wall -pipe -Os -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -arch x86_64 -fno-semantic-interposition -flto -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -fvisibility=hidden -fprofile-instr-generate -I./Include/internal -I./Include/internal/mimalloc -I. -I./Include -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -DPy_BUILD_CORE -o Parser/action_helpers.o Parser/action_helpers.c
/opt/local/bin/gcc-mp-14 -c -fno-strict-overflow -Wsign-compare -fno-common -dynamic -DNDEBUG -g -O3 -Wall -pipe -Os -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -arch x86_64 -fno-semantic-interposition -flto -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -fvisibility=hidden -fprofile-instr-generate -I./Include/internal -I./Include/internal/mimalloc -I. -I./Include -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -DPy_BUILD_CORE -o Parser/parser.o Parser/parser.c
gcc-mp-14: error: unrecognized command-line option '-fprofile-instr-generate'; did you mean '-fprofile-generate'?
gcc-mp-14: error: unrecognized command-line option '-fprofile-instr-generate'; did you mean '-fprofile-generate'?
gcc-mp-14: error: unrecognized command-line option '-fprofile-instr-generate'; did you mean '-fprofile-generate'?
make[2]: *** [Parser/token.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: *** [Parser/pegen_errors.o] Error 1
make[2]: *** [Parser/parser.o] Error 1
gcc-mp-14: error: unrecognized command-line option '-fprofile-instr-generate'; did you mean '-fprofile-generate'?
gcc-mp-14: error: unrecognized command-line option '-fprofile-instr-generate'; did you mean '-fprofile-generate'?
gcc-mp-14: error: unrecognized command-line option '-fprofile-instr-generate'; did you mean '-fprofile-generate'?
make[2]: *** [Parser/pegen.o] Error 1
make[2]: *** [Parser/action_helpers.o] Error 1
make[2]: *** [Programs/python.o] Error 1
make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python313/python313/work/Python-3.13.2'
make[1]: *** [profile-gen-stamp] Error 2
CPython versions tested on:
3.13
Operating systems tested on:
macOS
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by tracing the build's profile option handling and where -fprofile-instr-generate is added to CFLAGS_NODIST and LDFLAGS_NODIST. Verify the compiler-specific behavior described in the report, then confirm that a profile-enabled GCC build no longer passes the unsupported flag and completes successfully.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- macos, python
- Domain
- build-system
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100