[LLVMbugs] [Bug 5018] New: ffi/oprofile checked for even when explicitly disabled

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=5018

           Summary: ffi/oprofile checked for even when explicitly disabled
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: edwintorok at gmail.com
                CC: llvmbugs at cs.uiuc.edu


./configure --enable-ffi=no --enable-oprofile=no still checks for ffi and
oprofile
and adds it to LIBS.

The problem is here in configure.ac:
dnl --enable-libffi : check whether the user wants to turn off libffi:
AC_ARG_ENABLE(libffi,AS_HELP_STRING(
  --enable-libffi,[Check for the presence of libffi (default is YES)]),,
  enableval=yes)
case "$enableval" in
  yes) llvm_cv_enable_libffi="yes" ;;
  no)  llvm_cv_enable_libffi="no"  ;;
  *) AC_MSG_ERROR([Invalid setting for --enable-libffi. Use "yes" or "no"]) ;;
esac

enableval should be tested inside AC_ARG_ENABLE, otherwise it contains
something else:
+ eval 'enable_ffi=$ac_optarg'
++ enable_ffi=no
...
+ case "$withval" in
+ with_ocaml_libdir=auto
+ test '' = set
+ withval=default
+ case "$withval" in
+ WITH_BINUTILS_INCDIR=default
+ test xdefault '!=' xdefault
+ test '' = set
+ enableval=yes
+ case "$enableval" in
+ llvm_cv_enable_libffi=yes


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