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curl-compilers.m4: check for __ibmxl__ to detect xlclang

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Follow-up to 2fa0d57e2e. The __xlc__ symbol is only defined there if a
particular flag is used for legacy macros.

Fixes #3474
Closes #3479
This commit is contained in:
Daniel Stenberg 2019-01-16 08:11:43 +01:00
parent 16a3307e81
commit 26d7f0094a
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GPG Key ID: 5CC908FDB71E12C2
1 changed files with 2 additions and 2 deletions
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m4/curl-compilers.m4
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@ -84,8 +84,8 @@ AC_DEFUN([CURL_CHECK_COMPILER_CLANG], [
if test "$curl_cv_have_def___clang__" = "yes"; then
AC_MSG_RESULT([yes])
AC_MSG_CHECKING([if compiler is xlclang])
CURL_CHECK_DEF([__xlc__], [], [silent])
if test "$curl_cv_have_def___xlc__" = "yes" ; then
CURL_CHECK_DEF([__ibmxl__], [], [silent])
if test "$curl_cv_have_def___ibmxl__" = "yes" ; then
dnl IBM's almost-compatible clang version
AC_MSG_RESULT([yes])
compiler_id="XLCLANG"