imac:~ peter$ touch foo.c
imac:~ peter$ cc -c foo.c 
imac:~ peter$ echo "int main(){return 0;}" > foo.c 
imac:~ peter$ cc -o foo foo.c  /usr/X11R6/lib/libfreetype.dylib 
/usr/bin/ld: can't create output file: foo (Is a directory, errno = 21)
collect2: ld returned 1 exit status
imac:~ peter$ cc -o main foo.c  /usr/X11R6/lib/libfreetype.dylib 
imac:~ peter$ ./main 
imac:~ peter$ env DYLD_PRINT_LIBRARIES=1 ./main 
dyld: loaded: /Users/peter/./main
dyld: loaded: /usr/X11R6/lib/libfreetype.6.dylib
dyld: loaded: /usr/lib/libmx.A.dylib, cpu-sub-type: 0
dyld: loaded: /usr/lib/libSystem.B.dylib, cpu-sub-type: 0
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices
dyld: loaded: /usr/lib/system/libmathCommon.A.dylib, cpu-sub-type: 0
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/CarbonCore
dyld: loaded: /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServices.framework/Versions/A/OSServices
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/WebServicesCore.framework/Versions/A/WebServicesCore
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/SearchKit.framework/Versions/A/SearchKit
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadata.framework/Versions/A/Metadata
dyld: loaded: /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
dyld: loaded: /usr/lib/libicucore.A.dylib
dyld: loaded: /usr/lib/libz.1.dylib
dyld: loaded: /System/Library/Frameworks/Security.framework/Versions/A/Security
dyld: loaded: /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
dyld: loaded: /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfiguration
dyld: loaded: /usr/lib/libauto.dylib
dyld: loaded: /usr/lib/libobjc.A.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/AE.framework/Versions/A/AE
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/ATS
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ColorSync.framework/Versions/A/ColorSync
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreText.framework/Versions/A/CoreText
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/PrintCore.framework/Versions/A/PrintCore
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/QD.framework/Versions/A/QD
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/LangAnalysis.framework/Versions/A/LangAnalysis
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/FindByContent.framework/Versions/A/FindByContent
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/LaunchServices
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/SpeechSynthesis.framework/Versions/A/SpeechSynthesis
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/ImageIO
dyld: loaded: /usr/lib/libbsm.dylib
dyld: loaded: /usr/lib/libcrypto.0.9.7.dylib
dyld: loaded: /usr/lib/libcups.2.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libJPEG.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libJP2.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libGIF.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libRaw.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libTIFF.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libPng.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libRadiance.dylib
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate, cpu-sub-type: 0
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage, cpu-sub-type: 0
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/vecLib, cpu-sub-type: 0
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvMisc.dylib, cpu-sub-type: 0
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib, cpu-sub-type: 0
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib, cpu-sub-type: 0