问题
In the makefile:
CUSTOM_CFLAGS=-Wall -ggdb3 -O3 -std=gnu99 -frename-registers -pthread -Wsign-compare -D_GNU_SOURCE
SYS_CFLAGS=-DNO_THREAD_LOCAL
LDFLAGS=-pthread -rdynamic
LIBS=-lm -ldl
Where should I put the above in Xcode project?
回答1:
Makefile flags correspond to Xcode build settings. Look into the following build settings:
Optimization Level for the -O3 flag. C Language Dialect for the -std=gnu99 flag. Other C Flags for the other flags in the CUSTOM_CFLAGS and SYS_CFLAGS flags. Other Linker Flags for the LDFLAGS and LIBS flags.
Xcode may have build settings for some of the flags in the makefile's CUSTOM_CFLAGS flag list and the linker flags. I haven't memorized the build settings list. If you open the Quick Help inspector, you can read a description of each build setting by selecting the build setting from the build settings list. Choose View > Utilities > Show Quick Help Inspector to show the Quick Help inspector.
If you don't know where to find Xcode's build settings, read the following article:
Xcode 4: Accessing Build Settings
来源：https://stackoverflow.com/questions/13449915/where-to-put-makefile-flags-in-a-xcode-project