Cross-compiled generating error 77 in application

Hi,

Have added curl source to build a statically compiled libcurl.a to a
multi-platform application which cross-compiles binaries for on Linux for
Windows and Mac. The application on Linux and Mac work as expected, but
when calling curl_easy_perform with a HTTPS URL a 77 error code is
returned. During configure the following ca bundle path is set.

/etc/ssl/certs/ca-certificates.crt

When configuring for Windows the same cert is set which can obviously not
be found in a Windows environment. Hoping that I only need to set
--with-ca-path or --with-ca-bundle but I've not been able to work out what
it should be set to. The advice I've seen online is for people to download
the cert which allows my cross-compiled curl.exe to work with SSL, but does
not seem to work if placed in the same directory as the application. Tried
setting the CA bundle path to ./ without luck and also tried SSPI but that
did not make a difference.

Setting the following allows calls to HTTPS to work, this shows that
libcurl has been successfully compiled, linked and can work but obviously
this is not desired behaviour.

curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);

Compiling with the following configure options:

./configure --disable-shared --enable-static --disable-ldap --disable-sspi
--without-librtmp --disable-ftp --disable-file --disable-dict
--disable-telnet --disable-tftp --disable-rtsp --disable-pop3
--disable-imap --disable-smtp --disable-gopher --disable-smb
--host=x86_64-w64-mingw32

Configure output:

configure: Configured to build curl/libcurl:

  Host setup: x86_64-w64-mingw32
  Install prefix: /mnt/d/github/pyrk-win64/depends/x86_64-w64-mingw32
  Compiler: x86_64-w64-mingw32-gcc
   CFLAGS: -pipe -O2 -pthread
   CPPFLAGS: -isystem
/mnt/d/github/pyrk-win64/depends/x86_64-w64-mingw32/include -isystem
/mnt/d/github/pyrk-win64/depends/x86_64-w64-mingw32/include
   LDFLAGS:
-L/mnt/d/github/pyrk-win64/depends/x86_64-w64-mingw32/lib
-L/mnt/d/github/pyrk-win64/depends/x86_64-w64-mingw32/lib
   LIBS: -lssl -lcrypto -lssl -lcrypto -lgdi32 -lws2_32

  curl version: 7.70.0
  SSL: enabled (OpenSSL)
  SSH: no (--with-{libssh,libssh2})
  zlib: no (--with-zlib)
  brotli: no (--with-brotli)
  GSS-API: no (--with-gssapi)
  TLS-SRP: enabled
  resolver: POSIX threaded
  IPv6: enabled
  Unix sockets: no (--enable-unix-sockets)
  IDN: no (--with-{libidn2,winidn})
  Build libcurl: Shared=no, Static=yes
  Built-in manual: enabled
  --libcurl option: enabled (--disable-libcurl-option)
  Verbose errors: enabled (--disable-verbose)
  Code coverage: disabled
  SSPI: no (--enable-sspi)
  ca cert bundle: /etc/ssl/certs/ca-certificates.crt
  ca cert path: no
  ca fallback: no
  LDAP: no (--enable-ldap / --with-ldap-lib /
--with-lber-lib)
  LDAPS: no (--enable-ldaps)
  RTSP: no (--enable-rtsp)
  RTMP: no (--with-librtmp)
  Metalink: no (--with-libmetalink)
  PSL: no (libpsl not found)
  Alt-svc: no (--enable-alt-svc)
  HTTP2: disabled (--with-nghttp2)
  HTTP3: disabled (--with-ngtcp2, --with-quiche)
  ESNI: no (--enable-esni)
  Protocols: HTTP HTTPS
  Features: SSL IPv6 AsynchDNS NTLM TLS-SRP HTTPS-proxy

Any help on this would be appreciated.

Peter

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Received on 2020-06-18