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# that branch into FreeBSD APIs (which ones *are* exposed in the QNX libc since QNX largely shares FreeBSD code) are about to be patched right now to accept __QNXNTO__ too.
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# that branch into FreeBSD APIs (which ones *are* exposed in the QNX libc since QNX largely shares FreeBSD code) are about to be patched right now to accept __QNXNTO__ too.
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# Additionally, support for statfs()/fstatfs() has been restored in the QNX8 platform SDK in /usr/include/devs/sys/mount.h where it was claimed but absent from the QNX8 libc.
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# Additionally, support for statfs()/fstatfs() has been restored in the QNX8 platform SDK in /usr/include/devs/sys/mount.h where it was claimed but absent from the QNX8 libc.
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# FIXME: these hacks should be moved elsewhere not to pollute the QNX8 platform SDK -- it *SHOULD* be possible to build without devs
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# FIXME: these hacks should be moved elsewhere not to pollute the QNX8 platform SDK -- it *SHOULD* be possible to build without devs
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backup_and_patch_if_necessary "llvm/lib/Support/Unix/Path.inc" __QNXNTO__ \
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backup_and_patch_if_necessary "llvm/lib/Support/Unix/Path.inc" __QNXNTO__ \
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        's@defined\(__FreeBSD_kernel__\)@\(defined\(__FreeBSD_kernel__\) \|\| \defined\(__QNXNTO__\)\)@g'
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        's@defined\(__FreeBSD_kernel__\)@\(defined\(__FreeBSD_kernel__\) \|\| \defined\(__QNXNTO__\)\)@g'
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# -- 20240621 -- DISABLED -- the only other place (aside from llvm/lib/Support) where getMainExecutable() is defined is in ClangLinkerWrapper.cpp which is the LLD wrapper frontend.
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# -- 20240621 -- DISABLED -- actually llvm/lib/Support/Unix/Path.inc defines *getMainExecutableImpl* and not getMainExecutable, despite what the function comments say. So the code is right.
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# -- 20240621 -- DISABLED -- This block can be removed after a few successful thorough rebuilds.
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## LLVM 16: patch llvm/lib/Support/Path.cpp if not done yet
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## replace:
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##      std::string getMainExecutable
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## with:
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##      #if 0
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##      std::string getMainExecutable
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## and:
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##      TempFile::TempFile(StringRef Name, int FD)
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## with:
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##      #endif
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##      TempFile::TempFile(StringRef Name, int FD)
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## RATIONALE: std::string getMainExecutable(const char *Argv0, void *MainAddr) is already defined in llvm/lib/Support/Unix/Path.inc, this looks like a LLVM bug?
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## Specifically read the following patch list: https://reviews.llvm.org/D109977 -- it looks like the implementation of this diff in LLVM 16.0.6 is incomplete.
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## This patch restores a working state (ante D109977).
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#test "$(echo "${LLVM_VERSION}"|cut -d . -f 1)" -lt 17 && backup_and_patch_if_necessary "llvm/lib/Support/Path.cpp" "#if 0" \
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#       's@std::string getMainExecutable@#if 0\nstd::string getMainExecutable@' \
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#       's@TempFile::TempFile\(StringRef Name, int FD\)@#endif\nTempFile::TempFile\(StringRef Name, int FD\)@'
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# Clang front-end patches
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# Clang front-end patches
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if echo "${LLVM_PROJECTS_TO_BUILD}"|tr ';' '\n'|grep -q "clang"; then
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if echo "${LLVM_PROJECTS_TO_BUILD}"|tr ';' '\n'|grep -q "clang"; then
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        # patch clang/lib/Frontend/InitPreprocessor.cpp
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        # patch clang/lib/Frontend/InitPreprocessor.cpp