Hi Shubham, mktime() converts a struct tm interpreted as local time to time_t, while timegm() converts a struct tm interpreted as UTC to time_t. The result is different. Otherwise, I'd gladly merge your patch is you declare it public domain. Would you update the patch to convert to local time? Best regards, Mike On 2/26/26 10:35 AM, shubham gupta via stunnel-users wrote:
Hi,
Sorry for the wrong patch. I have attached the corrected one in this email.
Thanks, Shubham
---------- Forwarded message --------- From: *shubham gupta* <shubham17031994@gmail.com> Date: Thu, Feb 26, 2026 at 2:55 PM Subject: timegm not supported in AIX To: <stunnel-users@stunnel.org>
Hi,
I am building the latest stunnel on an AIX machine. However I see build failure due to missing API timegm. Snippet from the error generating file src/oscp.c #ifdef _WIN32 return _mkgmtime(&tm); #else /* defined _WIN32 */ return timegm(&tm); #endif /* defined _WIN32 */
Error log:
libtool: link: /opt/freeware/bin/gcc -maix64 -O2 -DOPENSSL_NO_PSK -g -O2 -Wall -Wextra -Wpedantic -Wformat=2 -Wconversion -Wno-deprecated-declarations -Wno-unused-command-line-argument -fPIE -D_FORTIFY_SOURCE=2 -Wl,-blibpath:/opt/freeware/lib64:/opt/freeware/lib:/usr/lib:/lib -fPIE -pie -o stunnel stunnel-tls.o stunnel-str.o stunnel-file.o stunnel-client.o stunnel-log.o stunnel-options.o stunnel-protocol.o stunnel-network.o stunnel-resolver.o stunnel-ssl.o stunnel-ctx.o stunnel-verify.o stunnel-sthreads.o stunnel-ocsp.o stunnel-fd.o stunnel-dhparam.o stunnel-cron.o stunnel-stunnel.o stunnel-pty.o stunnel-libwrap.o stunnel-ui_unix.o -L/usr/lib -lssl -lcrypto -L/opt/freeware/lib64 -L/opt/freeware/lib -lpthread ld: 0711-317 ERROR: Undefined symbol: .timegm
Please consider the patch attached along with the email for fixing the issue.
Thanks, Shubham
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