[LLVMbugs] [Bug 16251] New: Clang -pg option doesn't work on Linux

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=16251

            Bug ID: 16251
           Summary: Clang -pg option doesn't work on Linux
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Driver
          Assignee: unassignedclangbugs at nondot.org
          Reporter: qyang at brkt.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 10640
  --> http://llvm.org/bugs/attachment.cgi?id=10640&action=edit
Replace crt1.o with gcrt1.o when -pg is specified

Clang linker driver links the wrong crt1.o file when -pg option is specified.
As a result, the gprof doesn't work with clang on Linux. Programs compiled with
clang -pg doesn't generate gmon.out file.

Attached is patch which replaces crt1.o with gcrt1.o when -pg is specified.
With the patch, compiled programs generate gmon.out file correctly.

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