Commit b5afd531 authored by Yang Tse's avatar Yang Tse
Browse files

set earlier in configure process IBM compilers optimization flags

parent 72b4b3c7

ares/configure.ac

+15 −21
Original line number Diff line number Diff line
@@ -160,11 +160,22 @@ case $host in 
  #

esac



CURL_CHECK_DEF([__xlc__])

if test "$curl_cv_have_def___xlc__" = "yes"; then

  dnl Force xlc to stop after the compilation phase, and not

  dnl generate object code file when compilation has errors.

AC_MSG_CHECKING([whether we are using the IBM C compiler])

CURL_CHECK_DEF([__IBMC__], [], [silent])

if test "$curl_cv_have_def___IBMC__" = "yes"; then

  AC_MSG_RESULT([yes])

  dnl Ensure that compiler optimizations are always thread-safe.

  CFLAGS="$CFLAGS -qthreaded"

  dnl Disable type based strict aliasing optimizations, using worst

  dnl case aliasing assumptions when compiling. Type based aliasing

  dnl would restrict the lvalues that could be safely used to access

  dnl a data object.

  CFLAGS="$CFLAGS -qnoansialias"

  dnl Force compiler to stop after the compilation phase, without

  dnl generating an object code file when compilation has errors.

  CFLAGS="$CFLAGS -qhalt=e"

else

  AC_MSG_RESULT([no])

fi



CURL_CHECK_COMPILER_HALT_ON_ERROR
@@ -429,23 +440,6 @@ if test "x$RECENTAIX" = "xyes"; then 


  AC_DEFINE(_THREAD_SAFE, 1, [define this if you need it to compile thread-safe code])



  dnl check if this is the IBM xlc compiler

  dnl Details thanks to => http://predef.sourceforge.net/

  AC_MSG_CHECKING([if this is the xlc compiler])

  AC_EGREP_CPP([^__xlC__], [__xlC__],

         dnl action if the text is found, this it has not been replaced by the

         dnl cpp

         XLC="no"

         AC_MSG_RESULT([no]),

         dnl the text was not found, it was replaced by the cpp

         XLC="yes"

         AC_MSG_RESULT([yes])

         CFLAGS="$CFLAGS -qthreaded"

         dnl AIX xlc has to have strict aliasing turned off. If not,

         dnl the optimizer assumes that pointers can only point to

         dnl an object of the same type.

         CFLAGS="$CFLAGS -qnoansialias"

       )

fi

configure.ac

+15 −23
Original line number Diff line number Diff line
@@ -249,11 +249,22 @@ case $host in 
  #

esac



CURL_CHECK_DEF([__xlc__])

if test "$curl_cv_have_def___xlc__" = "yes"; then

  dnl Force xlc to stop after the compilation phase, and not

  dnl generate object code file when compilation has errors.

AC_MSG_CHECKING([whether we are using the IBM C compiler])

CURL_CHECK_DEF([__IBMC__], [], [silent])

if test "$curl_cv_have_def___IBMC__" = "yes"; then

  AC_MSG_RESULT([yes])

  dnl Ensure that compiler optimizations are always thread-safe.

  CFLAGS="$CFLAGS -qthreaded"

  dnl Disable type based strict aliasing optimizations, using worst

  dnl case aliasing assumptions when compiling. Type based aliasing

  dnl would restrict the lvalues that could be safely used to access

  dnl a data object.

  CFLAGS="$CFLAGS -qnoansialias"

  dnl Force compiler to stop after the compilation phase, without

  dnl generating an object code file when compilation has errors.

  CFLAGS="$CFLAGS -qhalt=e"

else

  AC_MSG_RESULT([no])

fi



CURL_CHECK_COMPILER_HALT_ON_ERROR
@@ -1819,25 +1830,6 @@ if test "x$RECENTAIX" = "xyes"; then 


  AC_DEFINE(_THREAD_SAFE, 1, [define this if you need it to compile thread-safe code])



  dnl check if this is the IMB xlc compiler

  dnl Details thanks to => http://predef.sourceforge.net/

  AC_MSG_CHECKING([if this is the xlc compiler])

  AC_EGREP_CPP([^__xlC__], [__xlC__],

         dnl action if the text is found, this it has not been replaced by the

         dnl cpp

         XLC="no"

         AC_MSG_RESULT([no]),

         dnl the text was not found, it was replaced by the cpp

         XLC="yes"

         AC_MSG_RESULT([yes])

         CFLAGS="$CFLAGS -qthreaded"

         dnl AIX xlc has to have strict aliasing turned off. If not,

         dnl the optimizer assumes that pointers can only point to

         dnl an object of the same type.

         CFLAGS="$CFLAGS -qnoansialias"

       )





  dnl is there a localtime_r()

  CURL_CHECK_LOCALTIME_R()