buildroot-2015.02에서는 tslib가 single point 터치만을 지원하고 있습니다.
이것을 multiple point 터치를 지원하게 변경하는 방법입니다.


buildroot-2015.02 디렉토리에서 tslib package 관련 파일들을 수정합니다.

buildroot-2015.02$ cd package/tslib/
tslib$ sudo cp -a Config.in Config.in.org  
tslib$ sudo cp -a tslib.mk tslib.mk.org  

--------------------------------------------------------------------------
tslib$ sudo vi Config.in

config BR2_PACKAGE_TSLIB
    bool "tslib"
    depends on !BR2_STATIC_LIBS # dlopen
    help
      Tslib is an abstraction layer for touchscreen panel events.

      https://github.com/kergoth/tslib

comment "tslib needs a toolchain w/ dynamic library"
    depends on BR2_STATIC_LIBS

if BR2_PACKAGE_TSLIB

choice
    prompt "touch point type"
    default BR2_PACKAGE_TSLIB_LEGACY

config BR2_PACKAGE_TSLIB_LEGACY
    bool "single point"
    help
      None.

config BR2_PACKAGE_TSLIB_MULTI
    bool "multiple point"
    help
      None.
endchoice

endif

--------------------------------------------------------------------------

tslib$ sudo vi tslib.mk

################################################################################
#
# tslib/tslib-mt
#
################################################################################

ifeq ($(BR2_PACKAGE_TSLIB_LEGACY), y)

TSLIB_VERSION = 1.1 
TSLIB_SITE = http://github.com/kergoth/tslib/tarball/$(TSLIB_VERSION)
TSLIB_LICENSE = GPL, LGPL
TSLIB_LICENSE_FILES = COPYING

TSLIB_AUTORECONF = YES 
TSLIB_INSTALL_STAGING = YES 
TSLIB_INSTALL_STAGING_OPT = DESTDIR=$(STAGING_DIR) LDFLAGS=-L$(STAGING_DIR)/usr/lib install

$(eval $(autotools-package))

else

TSLIB_VERSION = 1.0_mt
TSLIB_SOURCE = tslib-$(TSLIB_VERSION).rar
TSLIB_DL_PATH = $(BUILD_DIR)/tslib-$(TSLIB_VERSION)
TSLIB_CONF_FILE = $(TSLIB_DL_PATH)/etc/ts.conf
TSLIB_CONFIGURE_AC = $(TSLIB_DL_PATH)/configure.ac
TSLIB_SITE = http://downloads.sourceforge.net/project/tslib-mt/src
TSLIB_LICENSE = GPL, LGPL
TSLIB_LICENSE_FILES = COPYING

TSLIB_AUTORECONF = YES 
TSLIB_INSTALL_STAGING = YES 
TSLIB_INSTALL_STAGING_OPTS = DESTDIR=$(STAGING_DIR) LDFLAGS=-L$(STAGING_DIR)/usr/lib install

define TSLIB_EXTRACT_CMDS
    unrar x $(DL_DIR)/$(TSLIB_SOURCE) $(BUILD_DIR);
endef

TSLIB_CONF_ENV = ac_cv_func_malloc_0_nonnull=yes

define TSLIB_AUTOGEN
    (cd $(@D); \
    $(shell sed -i -e 's/LT_RELEASE=0.0/LT_RELEASE=1.0/g' $(TSLIB_CONFIGURE_AC))    \
    chmod 777 autogen.sh; ./autogen.sh; \
    $(shell sed -i -e 's/module_raw input/module_raw input\nmodule_raw mtinput/g' $(TSLIB_CONF_FILE))   \
    )
endef

TSLIB_PRE_CONFIGURE_HOOKS += TSLIB_AUTOGEN

$(eval $(autotools-package))
endif

--------------------------------------------------------------------------

위와 같이 수정하였으면 make 옵션에서 multiple point 옵션을 선택하고, 빌드합니다.

--------------------------------------------------------------------------
tslib$ cd ../../
buildroot-2015.02$ make menuconfig

Target packages  --->

            Libraries  --->

                 Hardware handling  ---> 
     
                         -*- tslib

                             touch point type (multiple point)  --->     


buildroot-2015.02$ make
--------------------------------------------------------------------------
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