Makefile: Ser a macro to distinguish build in runner context

Let's set a new macro, NSI_RUNNER_BUILD, so we can check if we
are building in the runner context or not.

Signed-off-by: Alberto Escolar Piedras <[email protected]>

Author: aescolar

Makefile

@@ -68,8 +68,8 @@ NSI_CPPFLAGS?=-D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTE
 
 NO_PIE_CO:=-fno-pie -fno-pic
 DEPENDFLAGS:=-MMD -MP
-COMMON_BUILD_FLAGS:=${NSI_DEBUG} ${NSI_WARNINGS} ${NSI_OPT} ${NO_PIE_CO} -DNSI_N_CPUS=${NSI_N_CPUS}\
-  -ffunction-sections -fdata-sections ${DEPENDFLAGS} ${NSI_BUILD_OPTIONS}
+COMMON_BUILD_FLAGS:=-DNSI_RUNNER_BUILD ${NSI_DEBUG} ${NSI_WARNINGS} ${NSI_OPT} ${NO_PIE_CO} \
+  -DNSI_N_CPUS=${NSI_N_CPUS} -ffunction-sections -fdata-sections ${DEPENDFLAGS} ${NSI_BUILD_OPTIONS}
 CFLAGS:=-std=c11 ${COMMON_BUILD_FLAGS} ${NSI_BUILD_C_OPTIONS}
 CXXFLAGS:=${COMMON_BUILD_FLAGS} ${NSI_BUILD_CXX_OPTIONS}
 FINALLINK_FLAGS:=${NO_PIE_CO} -no-pie  ${NSI_WARNINGS} \