-lcurl -lrtmp -lwinmm -lcares -lwldap32 -lidn -liconv -lssh2  -lws2_32
+ -lgdi32 -lssl -lcrypto -lcrypt32  -lz
[download]

I'll try to build latest Net-Curl with perl-5.30 later today, and see how it goes for me.

Here's how it went for me.

First up, I added the location (C:\_64\msys64\mingw64\bin) of the libcurl dll to my path:

set PATH=%PATH%;C:\_64\msys64\mingw64\bin
[download]

That, of course, also makes a whole lot of other stuff (such as pkg-config) available.

Then I conceal the curl static lib (C:\_64\msys64\mingw64\lib\libcurl.a) by changing its extension to ".a_hide".
This ensures that the Net-Curl-0.41 build links to the import lib (C:\_64\msys64\mingw64\lib\libcurl.dll.a).
Next, run the Makefile.PL:

C:\sisyphusion\Net-Curl-0.41>perl Makefile.PL
'which' is not recognized as an internal or external command,
operable program or batch file.
which failed:

Found libcurl version 7.65.0
Reading C:/_64/msys64/mingw64/include/curl/curl.h (gcc -E -IC:/_64/msy
+s64/mingw6
4/include C:/_64/msys64/mingw64/include/curl/curl.h)
Skipping '#define CURL_STRICTER': does not define a symbol at Makefile
+.PL line 3
18, <H> line 34.
Skipping '#  define CURL_EXTERN': does not define a symbol at Makefile
+.PL line 3
18, <H> line 116.
Skipping '#  define CURL_EXTERN': does not define a symbol at Makefile
+.PL line 3
18, <H> line 128.
Skipping '#define CURL_DID_MEMORY_FUNC_TYPEDEFS': does not define a sy
+mbol at Ma
kefile.PL line 318, <H> line 448.
Reading C:/_64/msys64/mingw64/include/curl/multi.h (gcc -E -IC:/_64/ms
+ys64/mingw
64/include C:/_64/msys64/mingw64/include/curl/multi.h)
-> found 892 constants (should be 892)
Writing const-defenums-h.inc
Writing const-curl-xs.inc
Writing const-easy-xs.inc
Writing const-form-xs.inc
Writing const-multi-xs.inc
Writing const-share-xs.inc
Writing curl-Easy-c.inc
Writing curl-Easy-xs.inc
Writing curl-Form-c.inc
Writing curl-Form-xs.inc
Writing curl-Multi-c.inc
Writing curl-Multi-xs.inc
Writing curl-Share-c.inc
Writing curl-Share-xs.inc
Writing lib/Net/Curl/examples.pod
<- examples/01-curl-transport.pl
<- examples/02-multi-simple.pl
<- examples/03-multi-event.pl
<- examples/04-share-threads.pl
<- examples/05-irssi-downloader.pl
Writing lib/Net/Curl/Compat.pm
Checking if your kit is complete...
Looks good
Generating a gmake-style Makefile
Writing Makefile for Net::Curl
Writing MYMETA.yml and MYMETA.json
[download]

Followed by:

C:\sisyphusion\Net-Curl-0.41>make
cp lib/Net/Curl/Form.pm blib\lib\Net\Curl\Form.pm
cp lib/Net/Curl/Compat.pm blib\lib\Net\Curl\Compat.pm
cp lib/Net/Curl/Share.pm blib\lib\Net\Curl\Share.pm
cp lib/Net/Curl/examples.pod blib\lib\Net\Curl\examples.pod
cp lib/Net/Curl/Multi.pm blib\lib\Net\Curl\Multi.pm
cp lib/Net/Curl.pm blib\lib\Net\Curl.pm
cp lib/Net/Curl/Easy.pm blib\lib\Net\Curl\Easy.pm
Running Mkbootstrap for Curl ()
"C:\_64\perl530_810\bin\perl.exe" -MExtUtils::Command -e chmod -- 644 
+"Curl.bs"
"C:\_64\perl530_810\bin\perl.exe" -MExtUtils::Command::MM -e cp_nonemp
+ty -- Curl.bs blib\arch\auto\Net\Curl\Curl.bs 644
"C:\_64\perl530_810\bin\perl.exe" "C:\_64\perl530_810\lib\ExtUtils/xsu
+bpp"  -typemap C:\_64\perl530_810\lib\ExtUtils\typemap -typemap C:\si
+syphusion\Net-Curl-0.41\typemap  Curl.xs > Curl.xsc
"C:\_64\perl530_810\bin\perl.exe" -MExtUtils::Command -e mv -- Curl.xs
+c Curl.c
gcc -c   -Wall -Wno-unknown-pragmas -IC:/_64/msys64/mingw64/include -s
+ -O2   -DVERSION=\"0.41\" -DXS_VERSION=\"0.41\"  "-IC:\_64\perl530_81
+0\lib\CORE"   Curl.c
In file included from Curl.xs:17:
curl-Share-c.inc: In function 'cb_share_lock':
C:\_64\perl530_810\lib\CORE/perl.h:174:22: warning: unused variable 'm
+y_perl' [-Wunused-variable]
 #  define pTHX  tTHX my_perl PERL_UNUSED_DECL
                      ^~~~~~~
C:\_64\perl530_810\lib\CORE/perl.h:185:19: note: in expansion of macro
+ 'pTHX'
 #    define dTHX  pTHX = PERL_GET_THX
                   ^~~~
curl-Share-c.inc:30:2: note: in expansion of macro 'dTHX'
  dTHX;
  ^~~~
curl-Share-c.inc: In function 'cb_share_unlock':
C:\_64\perl530_810\lib\CORE/perl.h:174:22: warning: unused variable 'm
+y_perl' [-Wunused-variable]
 #  define pTHX  tTHX my_perl PERL_UNUSED_DECL
                      ^~~~~~~
C:\_64\perl530_810\lib\CORE/perl.h:185:19: note: in expansion of macro
+ 'pTHX'
 #    define dTHX  pTHX = PERL_GET_THX
                   ^~~~
curl-Share-c.inc:40:2: note: in expansion of macro 'dTHX'
  dTHX;
  ^~~~
Curl.c: In function 'XS_Net__Curl__Multi_socket_action':
Curl.c:1373:15: warning: overflow in conversion from 'long long unsign
+ed int' to 'int' changes value from '18446744073709551615' to '-1' [-
+Woverflow]
      sockfd = CURL_SOCKET_BAD;
               ^~~~~~~~~~~~~~~
"C:\_64\perl530_810\bin\perl.exe" -MExtUtils::Mksymlists \
     -e "Mksymlists('NAME'=>\"Net::Curl\", 'DLBASE' => 'Curl', 'DL_FUN
+CS' => {}, 'FUNCLIST' => [], 'IMPORTS' => {  }, 'DL_VARS' => []);"
g++ Curl.def -o blib\arch\auto\Net\Curl\Curl.dll -mdll -s -L"C:\_64\pe
+rl530_810\lib\CORE" -L"C:\_64\gcc-mingw-810\mingw64\lib" Curl.o   "C:
+\_64\perl530_810\lib\CORE\libperl530.a" "C:\_64\msys64\mingw64\lib\li
+bcurl.dll.a" "C:\_64\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\lib
+moldname.a" "C:\_64\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\libk
+ernel32.a" "C:\_64\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\libus
+er32.a" "C:\_64\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\libgdi32
+.a" "C:\_64\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\libwinspool.
+a" "C:\_64\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\libcomdlg32.a
+" "C:\_64\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\libadvapi32.a"
+ "C:\_64\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\libshell32.a" "
+C:\_64\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\libole32.a" "C:\_
+64\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\liboleaut32.a" "C:\_6
+4\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\libnetapi32.a" "C:\_64
+\gcc-mingw-810\mingw64\x86_64-w64-mingw32\lib\libuuid.a" "C:\_64\gcc-
+mingw-810\mingw64\x86_64-w64-mingw32\lib\libws2_32.a" "C:\_64\gcc-min
+gw-810\mingw64\x86_64-w64-mingw32\lib\libmpr.a" "C:\_64\gcc-mingw-810
+\mingw64\x86_64-w64-mingw32\lib\libwinmm.a" "C:\_64\gcc-mingw-810\min
+gw64\x86_64-w64-mingw32\lib\libversion.a" "C:\_64\gcc-mingw-810\mingw
+64\x86_64-w64-mingw32\lib\libodbc32.a" "C:\_64\gcc-mingw-810\mingw64\
+x86_64-w64-mingw32\lib\libodbccp32.a" "C:\_64\gcc-mingw-810\mingw64\x
+86_64-w64-mingw32\lib\libcomctl32.a" -Wl,--enable-auto-image-base "C:
+\_64\perl530_810\bin\perl.exe" -MExtUtils::Command -e chmod -- 755 bl
+ib\arch\auto\Net\Curl\Curl.dll
[download]

The build has succeeded (for some definition of "succeeded") but there are some warnings, and the module is unloadable:

C:\sisyphusion\Net-Curl-0.41>perl -Mblib -MNet::Curl -le "print Net::C
+url::VERSION;"
Curl.c: loadable library and perl binaries are mismatched (got handsha
+ke key 0000000010600080, needed 0000000010a00080)
[download]

I don't know why that happens, or how to fix it.
The compiler warning about conversion from 'long long unsigned int' to 'int' rings an alarm bell.
And I see places in the generated Curl.c where 'IV' is cast to 'int', which creates a cacophony of alarm bells.

Cheers,
Rob

Thanks Rob, I note you use libcurl installed from MSYS2 other than win64 version, that's why you can build successfully I think. Maybe I choose a hard way since I use pure portable strawberry perl suite. ;)




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I am trying to improve my English skills, if you see a mistake please feel free to reply or /msg me a correction