make: Add ZSTD_PROGRAMS_LINK_SHARED to dll-link zstd#2450
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cemeyer wants to merge 1 commit intofacebook:devfrom
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make: Add ZSTD_PROGRAMS_LINK_SHARED to dll-link zstd#2450cemeyer wants to merge 1 commit intofacebook:devfrom
cemeyer wants to merge 1 commit intofacebook:devfrom
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Add a make variable ZSTD_PROGRAMS_LINK_SHARED. When set, libzstd exports private symbols needed to shared-link the zstd program. zstd is linked against this libzstd.so.
cemeyer
commented
Jan 3, 2021
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| /** ZSTD_cycleLog() : | ||
| * condition for correct operation : hashLog > 1 */ | ||
| #if defined(ZSTD_PROGRAMS_LINK_SHARED) |
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This could instead be some conditionally-defined ZSTDLIB_CLI_DLL_API (or whatever) in lib/zstd.h. I don't feel strongly about it; the number of instances needed will probably remain very small.
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We could probably remove ZSTD_cycleLog() dependency. It's a trivial code to copy.
uqs
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Jan 3, 2021
Fix non-FreeBSD CI build after v1.4.8. This definition was only used in zstd(1), which isn't part of non-FreeBSD CI (I guess). The ifdef was added in v1.4.5 import. Upstream does not currently support shared-linked zstd(1), but I have proposed facebook/zstd#2450 . If that is adopted, we can add -DZSTD_PROGRAMS_LINK_SHARED to our libzstd build and drop some diffs. Reported by: uqs
Cyan4973
reviewed
Jan 5, 2021
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| /* Hidden declaration for dbio.c */ | ||
| #if defined(ZSTD_PROGRAMS_LINK_SHARED) | ||
| ZSTDLIB_API |
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Here, we could make ZDICT_trainFromBuffer_unsafe_legacy() function part of the "unstable"/"experimental" section of zdict API.
Another alternative is to not use it in dibio.c and use the safe variant instead.
It comes at an additional memory allocation cost, but might be worth it to remove this dependency.
Cyan4973
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Jan 6, 2021
ZSTD_cycleLog() is a very short function, creating a rather large dependency onto libzstd's internal just for it is overkill. Prefer duplicating this 2-lines function. This PR makes the zstd CLI one step closer to being linkable to the dynamic library (see #2450) More steps are still needed to reach this goal.
This was referenced Jan 6, 2021
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In #2457, there is a proposed PR The proposed method ( |
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Both proposals work well for me. |
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Superseded by #257 |
brooksdavis
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Oct 15, 2021
Fix non-FreeBSD CI build after v1.4.8. This definition was only used in zstd(1), which isn't part of non-FreeBSD CI (I guess). The ifdef was added in v1.4.5 import. Upstream does not currently support shared-linked zstd(1), but I have proposed facebook/zstd#2450 . If that is adopted, we can add -DZSTD_PROGRAMS_LINK_SHARED to our libzstd build and drop some diffs. Reported by: uqs (cherry picked from commit bcae12b)
brooksdavis
pushed a commit
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that referenced
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Oct 15, 2021
Fix non-FreeBSD CI build after v1.4.8. This definition was only used in zstd(1), which isn't part of non-FreeBSD CI (I guess). The ifdef was added in v1.4.5 import. Upstream does not currently support shared-linked zstd(1), but I have proposed facebook/zstd#2450 . If that is adopted, we can add -DZSTD_PROGRAMS_LINK_SHARED to our libzstd build and drop some diffs. Reported by: uqs (cherry picked from commit bcae12b)
brooksdavis
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that referenced
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Oct 19, 2021
Fix non-FreeBSD CI build after v1.4.8. This definition was only used in zstd(1), which isn't part of non-FreeBSD CI (I guess). The ifdef was added in v1.4.5 import. Upstream does not currently support shared-linked zstd(1), but I have proposed facebook/zstd#2450 . If that is adopted, we can add -DZSTD_PROGRAMS_LINK_SHARED to our libzstd build and drop some diffs. Reported by: uqs
brooksdavis
pushed a commit
to CTSRD-CHERI/cheribsd
that referenced
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Oct 20, 2021
Fix non-FreeBSD CI build after v1.4.8. This definition was only used in zstd(1), which isn't part of non-FreeBSD CI (I guess). The ifdef was added in v1.4.5 import. Upstream does not currently support shared-linked zstd(1), but I have proposed facebook/zstd#2450 . If that is adopted, we can add -DZSTD_PROGRAMS_LINK_SHARED to our libzstd build and drop some diffs. Reported by: uqs
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Add a make variable ZSTD_PROGRAMS_LINK_SHARED. When set, libzstd
exports private symbols needed to shared-link the zstd program. zstd is
linked against this libzstd.so.
(See issues #2261, #1680.)