Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
clang-devel
clang-devel(x86-64)

Requires :

rpmlib(FileDigests) <= 4.6.0-1
rpmlib(CompressedFileNames) <= 3.0.4-1
libclang.so.7()(64bit)
llvm-devel
rpmlib(PayloadIsXz) <= 5.2-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
clang-libs = 7.0.0-2.11.el7
clang = 7.0.0-2.11.el7

Content of RPM :
/usr/include/clang
/usr/include/clang-c
/usr/include/clang-c/BuildSystem.h
/usr/include/clang-c/CXCompilationDatabase.h
/usr/include/clang-c/CXErrorCode.h
/usr/include/clang-c/CXString.h
/usr/include/clang-c/Documentation.h
/usr/include/clang-c/Index.h
/usr/include/clang-c/Platform.h
/usr/include/clang/ARCMigrate
/usr/include/clang/ARCMigrate/ARCMT.h
/usr/include/clang/ARCMigrate/ARCMTActions.h
/usr/include/clang/ARCMigrate/FileRemapper.h
/usr/include/clang/AST
/usr/include/clang/AST/APValue.h
/usr/include/clang/AST/AST.h
/usr/include/clang/AST/ASTConsumer.h
/usr/include/clang/AST/ASTContext.h
/usr/include/clang/AST/ASTDiagnostic.h
/usr/include/clang/AST/ASTFwd.h
/usr/include/clang/AST/ASTImporter.h
/usr/include/clang/AST/ASTLambda.h
/usr/include/clang/AST/ASTMutationListener.h
/usr/include/clang/AST/ASTStructuralEquivalence.h
/usr/include/clang/AST/ASTTypeTraits.h
/usr/include/clang/AST/ASTUnresolvedSet.h
/usr/include/clang/AST/ASTVector.h
/usr/include/clang/AST/Attr.h
/usr/include/clang/AST/AttrDump.inc
/usr/include/clang/AST/AttrImpl.inc
There is 588 files more in these RPM.