https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7449
Summary: Building Wireshark with '-O0 -D_FORTIFY_SOURCE=2 ...'
fails
Product: Wireshark
Version: unspecified
Platform: x86
OS/Version: Fedora
Status: ASSIGNED
Severity: Minor
Priority: Low
Component: Wireshark
AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
ReportedBy: wmeier@xxxxxxxxxxx
Build Information:
--
The warning [error] message:
/usr/include/features.h:314:4: error: #warning _FORTIFY_SOURCE requires
compiling with optimization (-O) [-Werror=cpp]`
A bit of research shows that this warning was added to a recent version of
glibc (on at least Fedora).
See: http://sourceware.org/bugzilla/show_bug.cgi?id=13979
The warning message occurs if -D_FORTIFY_SOURCE=... is used and the gcc
'optimization level' == 0 (-O0).
Unfortunately when building with -O0 this warning message:
1. Causes compiles to fail (if -Werror [stop on warning])
2. Causes ./configure to fail with an (incorrect) message
about the pcap header being older than the libpcap version.
I will commit a fix shortly for configure to use -D_FORTIFY_SOURCE=2 only if
the gcc 'optimization level' is > 0.
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