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Add -headerpad_max_install_names flag for macOS dylib builds

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This fixes the install_name_tool issue on macOS where the tool fails
with "larger updated load commands do not fit". The linker flag
-Wl,-headerpad_max_install_names ensures sufficient header padding
in the Mach-O binary for install_name_tool to modify install names.

Changes made:
- CMake: Added flag to libz3, z3java, z3jl shared libraries on Darwin
- Python build: Changed flag from ML-only to all macOS builds
- OCaml CMake: Added flag to OCaml stublib build on APPLE

Fixes #7623 (regression in 4.15.5)

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot] 2026-02-08 03:26:13 +00:00
parent f988e76da6
commit a08e8a99f9
5 changed files with 18 additions and 1 deletions
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4
scripts/mk_util.py
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@ -2749,7 +2749,9 @@ def mk_config():
CXXFLAGS = '%s -arch arm64' % CXXFLAGS
LDFLAGS = '%s -arch arm64' % LDFLAGS
SLIBEXTRAFLAGS = '%s -arch arm64' % SLIBEXTRAFLAGS
if IS_OSX and is_ml_enabled():
# Add header padding for macOS to allow install_name_tool to modify the dylib
# This fixes issues where install_name_tool fails with "larger updated load commands do not fit"
if IS_OSX:
SLIBFLAGS += ' -Wl,-headerpad_max_install_names'
config.write('PREFIX=%s\n' % PREFIX)