please support Visual C ++ 6.0

[ohyeah521]

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please support Visual C ++ 6.0

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[Cyan4973]

I don't have Visual C++ 6.0, and therefore can't make it happen all by myself.
The source code is supposed to be C90 compatible, and even embeds restrictions to be directly compatible with C++ too.
So this is a good start, but I can't guarantee that there aren't any specificity getting in the way.

I'm very likely to accept support on this topic.
Just, since VC6 is a pretty old and by now unsupported compiler, keep patches small and well localized.
Sprawling changes impacting maintenance complexity for the entire source code are not a good deal.

[ohyeah521]

i like vc6, it's small and quik, this is vc6 without install ,just unzip and run init app "安装.exe" ,it can works on xp and win7, not test on win10.
https://onedrive.live.com/embed?cid=0FB627D302D4CE25&resid=FB627D302D4CE25%21972&authkey=AIGkwyx1tRk6Aws

[aqrit]

lz4/lib/lz4.c

Line 536 in 26bc447

# if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)

should probably be
# if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(LZ4_FORCE_SW_BITCOUNT)

@ohyeah521 does this solve your issue?

[Cyan4973]

It certainly wouldn't cost much to add !

[aqrit]

also here

lz4/lib/lz4.c

Lines 124 to 125 in 26bc447

	#ifdef _MSC_VER /* Visual Studio */
	# include <intrin.h>

from https://rt.cpan.org/Public/Bug/Display.html?id=83876

[ohyeah521]

if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(LZ4_FORCE_SW_BITCOUNT)

no， vc6 had some errors

[hglee]

I attached compiler error log by VC6.

But it seems hard to fix build errors.

From error log file, you can find

• VC6 does not support unsigned long long. But unsigned __int64 allowed.
• VC6 does not support unsigned long long literal suffix(ULL)
• VC6 does not support variadic macro
• VC6 does not support declspec deprecated

20201224_VC6_error.txt

[Neustradamus]

What is the situation of this ticket?