ext-SDL/Android.mk
Jan Engelhardt 1878674477 build: add symbol versioning for SDL
If a program built against one version of SDL is run in an
environment where there is an earlier version of the SDL .so library
installed, the result varies depending on platform configuration; in
the best case, it won't start at all, at worst it aborts in the
middle of the user doing "something important" (systems implementing
lazy symbol resolution). verdefs on the other hand are always checked
on startup.

The dependency information present in programs and shared libraries
is not only of value to the dynamic linker, but also to a
distribution's package management. If the dynamic linker is able to
tell that a program is not runnable per the above, a package manager
is able to come to the same conclusion — and block the installation
of a nonfunctional program+library ensemble.

Because there are a lot more symbols than there are libraries (I am
going to throw in "10^4 to 1 or worse"), package managers generally
do not evaluate symbols, but only e.g. the SONAME, NEEDED and VERNEED
fields/blocks. Because the SONAME is the same between two SDL
versions like 2.0.24, and 2.0.26, everything rests on having verdefs.

This patch proposes the addition of verdefs.
2022-12-02 13:05:37 -08:00

130 lines
3.6 KiB
Makefile

LOCAL_PATH := $(call my-dir)
###########################
#
# SDL shared library
#
###########################
include $(CLEAR_VARS)
LOCAL_MODULE := SDL3
LOCAL_C_INCLUDES := $(LOCAL_PATH)/include $(LOCAL_PATH)/src
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_C_INCLUDES)
LOCAL_SRC_FILES := \
$(subst $(LOCAL_PATH)/,, \
$(wildcard $(LOCAL_PATH)/src/*.c) \
$(wildcard $(LOCAL_PATH)/src/audio/*.c) \
$(wildcard $(LOCAL_PATH)/src/audio/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/audio/dummy/*.c) \
$(wildcard $(LOCAL_PATH)/src/audio/aaudio/*.c) \
$(wildcard $(LOCAL_PATH)/src/audio/openslES/*.c) \
$(LOCAL_PATH)/src/atomic/SDL_atomic.c.arm \
$(LOCAL_PATH)/src/atomic/SDL_spinlock.c.arm \
$(wildcard $(LOCAL_PATH)/src/core/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/cpuinfo/*.c) \
$(wildcard $(LOCAL_PATH)/src/dynapi/*.c) \
$(wildcard $(LOCAL_PATH)/src/events/*.c) \
$(wildcard $(LOCAL_PATH)/src/file/*.c) \
$(wildcard $(LOCAL_PATH)/src/haptic/*.c) \
$(wildcard $(LOCAL_PATH)/src/haptic/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/hidapi/*.c) \
$(wildcard $(LOCAL_PATH)/src/hidapi/android/*.cpp) \
$(wildcard $(LOCAL_PATH)/src/joystick/*.c) \
$(wildcard $(LOCAL_PATH)/src/joystick/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/joystick/hidapi/*.c) \
$(wildcard $(LOCAL_PATH)/src/joystick/virtual/*.c) \
$(wildcard $(LOCAL_PATH)/src/loadso/dlopen/*.c) \
$(wildcard $(LOCAL_PATH)/src/locale/*.c) \
$(wildcard $(LOCAL_PATH)/src/locale/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/misc/*.c) \
$(wildcard $(LOCAL_PATH)/src/misc/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/power/*.c) \
$(wildcard $(LOCAL_PATH)/src/power/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/filesystem/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/sensor/*.c) \
$(wildcard $(LOCAL_PATH)/src/sensor/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/render/*.c) \
$(wildcard $(LOCAL_PATH)/src/render/*/*.c) \
$(wildcard $(LOCAL_PATH)/src/stdlib/*.c) \
$(wildcard $(LOCAL_PATH)/src/thread/*.c) \
$(wildcard $(LOCAL_PATH)/src/thread/pthread/*.c) \
$(wildcard $(LOCAL_PATH)/src/timer/*.c) \
$(wildcard $(LOCAL_PATH)/src/timer/unix/*.c) \
$(wildcard $(LOCAL_PATH)/src/video/*.c) \
$(wildcard $(LOCAL_PATH)/src/video/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/video/yuv2rgb/*.c) \
$(wildcard $(LOCAL_PATH)/src/test/*.c))
LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES
LOCAL_CFLAGS += \
-Wall -Wextra \
-Wdocumentation \
-Wdocumentation-unknown-command \
-Wmissing-prototypes \
-Wunreachable-code-break \
-Wunneeded-internal-declaration \
-Wmissing-variable-declarations \
-Wfloat-conversion \
-Wshorten-64-to-32 \
-Wunreachable-code-return \
-Wshift-sign-overflow \
-Wstrict-prototypes \
-Wkeyword-macro \
# Warnings we haven't fixed (yet)
LOCAL_CFLAGS += -Wno-unused-parameter -Wno-sign-compare
LOCAL_LDLIBS := -ldl -lGLESv1_CM -lGLESv2 -lOpenSLES -llog -landroid
LOCAL_LDFLAGS := -Wl,--no-undefined -Wl,--version-script=$(LOCAL_PATH)/src/dynapi/SDL_dynapi.sym
ifeq ($(NDK_DEBUG),1)
cmd-strip :=
endif
LOCAL_STATIC_LIBRARIES := cpufeatures
include $(BUILD_SHARED_LIBRARY)
###########################
#
# SDL static library
#
###########################
LOCAL_MODULE := SDL3_static
LOCAL_MODULE_FILENAME := libSDL3
LOCAL_LDLIBS :=
LOCAL_LDFLAGS :=
LOCAL_EXPORT_LDLIBS := -ldl -lGLESv1_CM -lGLESv2 -llog -landroid
include $(BUILD_STATIC_LIBRARY)
###########################
#
# SDL main static library
#
###########################
include $(CLEAR_VARS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
LOCAL_MODULE := SDL3_main
LOCAL_MODULE_FILENAME := libSDL3_main
include $(BUILD_STATIC_LIBRARY)
$(call import-module,android/cpufeatures)