proper CFLAGS variable to the shell.
With this, the build log confirms the compiler flags to be
[ 9s] - C compiler flags................ -O2 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type -flto=auto -g
OBS-URL: https://build.opensuse.org/package/show/electronics/libserialport?expand=0&rev=9
* The 0.1.2 release is compatible with 0.1.1 in that no existing APIs
have been changed or removed. The release contains mostly bugfixes and
updates to the code base.
* Additionally, examples for libserialport usage are now provided, along
with Visual Studio project files for those who want to use them.
OBS-URL: https://build.opensuse.org/package/show/electronics/libserialport?expand=0&rev=8