возвращает флаги сборки для использования во время сборки пакета (returns build flags to use during package build)
SUPPORTED FLAGS
CFLAGS Options for the C compiler. The default value set by the
vendor includes -g and the default optimization level (-O2
usually, or -O0 if the DEB_BUILD_OPTIONS environment
variable defines noopt).
CPPFLAGS
Options for the C preprocessor. Default value: empty.
CXXFLAGS
Options for the C++ compiler. Same as CFLAGS.
OBJCFLAGS
Options for the Objective C compiler. Same as CFLAGS.
OBJCXXFLAGS
Options for the Objective C++ compiler. Same as CXXFLAGS.
GCJFLAGS
Options for the GNU Java compiler (gcj). A subset of
CFLAGS.
FFLAGS Options for the Fortran 77 compiler. A subset of CFLAGS.
FCFLAGS
Options for the Fortran 9x compiler. Same as FFLAGS.
LDFLAGS
Options passed to the compiler when linking executables or
shared objects (if the linker is called directly, then -Wl
and , have to be stripped from these options). Default
value: empty.
New flags might be added in the future if the need arises (for
example to support other languages).