Hello Curl developers,
Prior to release 7.86.0, I've been able to build Curl with both Schannel
and OpenSSL support (using MSVC), but now get an error:
[ 66%] Building C object lib/CMakeFiles/libcurl.dir/vtls/openssl.c.obj
openssl.c
C:\Apache24\include\openssl/x509v3.h(181): error C2059: syntax error: '('
C:\Apache24\include\openssl/x509v3.h(188): error C2059: syntax error:
'<parameter-list>'
C:\Apache24\include\openssl/x509v3.h(193): error C2059: syntax error: '}'
C:\Apache24\include\openssl/x509v3.h(194): error C2059: syntax error: '}'
C:\Apache24\include\openssl/x509v3.h(198): error C2061: syntax error:
identifier 'GENERAL_NAME'
C:\Apache24\include\openssl/x509v3.h(199): error C2059: syntax error: '}'
etc
Line 181 of x509v3.h doesn't contain a '(' - it's part way through a struct
definition.
Comparing vtls/openssl.h for versions 7.85.0 and 7.86.0, there's actually a
comment relating to Schannel and OpenSSL support in both, which says:
/*
* In an effort to avoid using 'X509 *' here, we instead use the struct
* x509_st version of the type so that we can forward-declare it here
without
* having to include <openssl/x509v3.h>. Including that header causes name
* conflicts when libcurl is built with both Schannel and OpenSSL support.
*/
The key issue is the 7.86.0 version of vtls/openssl.h DOES now include
openssl/ssl.h which in turn includes openssl/x509v3.h. Hence we now get a
name conflict with something in the Schannel code?
Are you able to update the OpenSSL header file to avoid whatever conflict
is occuring, in a similar manner that resulted in the comment you've
previously noted?
Thanks, tangent
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