ios - "_OBJC_CLASS_$_CAEAGLLayer", referenced from: objc-class-ref in DBSignatureView.o" Not Resolving -


i have app , in 1 of module ,which going import 2 libraries. 1) opengles.framework 2) quartzcore.framework.

for purpose of drawing. have drawing app of separate works fine . when add app , gives "build failed".

i have gone through many of links rectify such http://stackoverflow.com/questions/7953168/symbols-not-found-for-architecture-armv6/10415850#10415850

http://stackoverflow.com/questions/6251111/classlayerclass-wont-work

even removed libraries , added again config stated in these links. still i'm getting same errors.

this error page .

ld /users/kumaralakshmanna/library/developer/xcode/deriveddata/checking_del-bseuzbpwlbzpxvdzdamarjieapuz/build/products/debug-iphonesimulator/checking_del.app/checking_del normal i386     cd /users/kumaralakshmanna/documents/ios_worksapace/checking_del     setenv iphoneos_deployment_target 6.1     setenv path "/applications/xcode.app/contents/developer/platforms/iphonesimulator.platform/developer/usr/bin:/applications/xcode.app/contents/developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"     /applications/xcode.app/contents/developer/toolchains/xcodedefault.xctoolchain/usr/bin/clang -arch i386 -isysroot /applications/xcode.app/contents/developer/platforms/iphonesimulator.platform/developer/sdks/iphonesimulator6.1.sdk -l/users/kumaralakshmanna/library/developer/xcode/deriveddata/checking_del-bseuzbpwlbzpxvdzdamarjieapuz/build/products/debug-iphonesimulator -f/users/kumaralakshmanna/library/developer/xcode/deriveddata/checking_del-bseuzbpwlbzpxvdzdamarjieapuz/build/products/debug-iphonesimulator -f/users/kumaralakshmanna/documents/ios_worksapace/checking_del -filelist /users/kumaralakshmanna/library/developer/xcode/deriveddata/checking_del-bseuzbpwlbzpxvdzdamarjieapuz/build/intermediates/checking_del.build/debug-iphonesimulator/checking_del.build/objects-normal/i386/checking_del.linkfilelist -xlinker -objc_abi_version -xlinker 2 -fobjc-arc -fobjc-link-runtime -xlinker -no_implicit_dylibs -mios-simulator-version-min=6.1 -framework uikit -framework foundation -framework coregraphics -framework opengles -framework quartzcore -o /users/kumaralakshmanna/library/developer/xcode/deriveddata/checking_del-bseuzbpwlbzpxvdzdamarjieapuz/build/products/debug-iphonesimulator/checking_del.app/checking_del  ld: warning: ignoring file /users/kumaralakshmanna/documents/ios_worksapace/checking_del/opengles.framework/opengles, missing required architecture i386 in file /users/kumaralakshmanna/documents/ios_worksapace/checking_del/opengles.framework/opengles (2 slices) ld: warning: ignoring file /users/kumaralakshmanna/documents/ios_worksapace/checking_del/quartzcore.framework/quartzcore, missing required architecture i386 in file /users/kumaralakshmanna/documents/ios_worksapace/checking_del/quartzcore.framework/quartzcore (2 slices) undefined symbols architecture i386:   "_objc_class_$_caeagllayer", referenced from:       objc-class-ref in dbsignatureview.o   "_objc_class_$_eaglcontext", referenced from:       objc-class-ref in dbsignatureview.o   "_glbindframebufferoes", referenced from:       -[dbsignatureview createframebuffer] in dbsignatureview.o       -[dbsignatureview erase] in dbsignatureview.o       -[dbsignatureview renderlinefrompoint:topoint:] in dbsignatureview.o   "_glbindrenderbufferoes", referenced from:       -[dbsignatureview createframebuffer] in dbsignatureview.o       -[dbsignatureview erase] in dbsignatureview.o       -[dbsignatureview renderlinefrompoint:topoint:] in dbsignatureview.o   "_glbindtexture", referenced from:       -[dbsignatureview commoninit] in dbsignatureview.o   "_glblendfunc", referenced from:       -[dbsignatureview commoninit] in dbsignatureview.o   "_glcheckframebufferstatusoes", referenced from:       -[dbsignatureview createframebuffer] in dbsignatureview.o   "_glclear", referenced from:       -[dbsignatureview erase] in dbsignatureview.o   "_glclearcolor", referenced from:       -[dbsignatureview erase] in dbsignatureview.o   "_glcolor4f", referenced from:       -[dbsignatureview setbrushcolorwithred:green:blue:] in dbsignatureview.o   "_gldeleteframebuffersoes", referenced from:       -[dbsignatureview destroyframebuffer] in dbsignatureview.o   "_gldeleterenderbuffersoes", referenced from:       -[dbsignatureview destroyframebuffer] in dbsignatureview.o   "_gldeletetextures", referenced from:       -[dbsignatureview dealloc] in dbsignatureview.o   "_gldisable", referenced from:       -[dbsignatureview commoninit] in dbsignatureview.o   "_gldrawarrays", referenced from:       -[dbsignatureview renderlinefrompoint:topoint:] in dbsignatureview.o   "_glenable", referenced from:       -[dbsignatureview commoninit] in dbsignatureview.o   "_glenableclientstate", referenced from:       -[dbsignatureview commoninit] in dbsignatureview.o   "_glframebufferrenderbufferoes", referenced from:       -[dbsignatureview createframebuffer] in dbsignatureview.o   "_glgenframebuffersoes", referenced from:       -[dbsignatureview createframebuffer] in dbsignatureview.o   "_glgenrenderbuffersoes", referenced from:       -[dbsignatureview createframebuffer] in dbsignatureview.o   "_glgentextures", referenced from:       -[dbsignatureview commoninit] in dbsignatureview.o   "_glgetrenderbufferparameterivoes", referenced from:       -[dbsignatureview createframebuffer] in dbsignatureview.o   "_glmatrixmode", referenced from:       -[dbsignatureview commoninit] in dbsignatureview.o   "_glorthof", referenced from:       -[dbsignatureview commoninit] in dbsignatureview.o   "_glpointsize", referenced from:       -[dbsignatureview commoninit] in dbsignatureview.o   "_glreadpixels", referenced from:       -[dbsignatureview upsidedownimagerepresenation] in dbsignatureview.o

is wrong compatibility of libraries ...? plese needful


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