llvm-mirror/autoconf/m4/huge_val.m4

#
# This function determins if the HUGE_VAL macro is compilable with the 
# -pedantic switch or not. XCode < 2.4.1 doesn't get it right.
#
AC_DEFUN([AC_HUGE_VAL_CHECK],[
  AC_CACHE_CHECK([for HUGE_VAL sanity], [ac_cv_huge_val_sanity],[
    AC_LANG_PUSH([C++])
    ac_save_CXXFLAGS=$CXXFLAGS
    CXXFLAGS="$CXXFLAGS -pedantic"
    AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]],
                                   [[double x = HUGE_VAL; return x != x;]])],
                  [ac_cv_huge_val_sanity=yes],[ac_cv_huge_val_sanity=no],
                  [ac_cv_huge_val_sanity=yes])
    CXXFLAGS=$ac_save_CXXFLAGS
    AC_LANG_POP([C++])
    ])
  AC_SUBST(HUGE_VAL_SANITY,$ac_cv_huge_val_sanity)
])
Add a check to see if HUGE_VAL is sane or not. llvm-svn: 31416 2006-11-03 19:04:08 +01:00			`#`
Fix a typo (the the => the) llvm-svn: 160621 2012-07-23 10:51:15 +02:00			`# This function determins if the HUGE_VAL macro is compilable with the`
Add a check to see if HUGE_VAL is sane or not. llvm-svn: 31416 2006-11-03 19:04:08 +01:00			`# -pedantic switch or not. XCode < 2.4.1 doesn't get it right.`
			`#`
			`AC_DEFUN([AC_HUGE_VAL_CHECK],[`
			`AC_CACHE_CHECK([for HUGE_VAL sanity], [ac_cv_huge_val_sanity],[`
Make the huge_val test run a C++ program not C llvm-svn: 31422 2006-11-03 20:49:16 +01:00			`AC_LANG_PUSH([C++])`
Make sure we save CXXFLAGS before setting it as pedantic and regenerate configure. Fixes PR6388. Patch by Yann Droneaud! llvm-svn: 97548 2010-03-02 06:06:54 +01:00			`ac_save_CXXFLAGS=$CXXFLAGS`
Fix CXXFLAGS for huge_val.m4. Patch by Jeremy Huddleston! llvm-svn: 153862 2012-04-02 08:54:01 +02:00			`CXXFLAGS="$CXXFLAGS -pedantic"`
[autoconf] Fix m4 quoting for newer autotools This simply fixes up quoting of macro invocations to appease newer versions of autotools. http://llvm-reviews.chandlerc.com/D332 Signed-off-by: Saleem Abdulrasool <compnerd@compnerd.org> llvm-svn: 173878 2013-01-30 02:37:55 +01:00			`AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]],`
			`[[double x = HUGE_VAL; return x != x;]])],`
			`[ac_cv_huge_val_sanity=yes],[ac_cv_huge_val_sanity=no],`
			`[ac_cv_huge_val_sanity=yes])`
Make sure we save CXXFLAGS before setting it as pedantic and regenerate configure. Fixes PR6388. Patch by Yann Droneaud! llvm-svn: 97548 2010-03-02 06:06:54 +01:00			`CXXFLAGS=$ac_save_CXXFLAGS`
Make the huge_val test run a C++ program not C llvm-svn: 31422 2006-11-03 20:49:16 +01:00			`AC_LANG_POP([C++])`
Add a check to see if HUGE_VAL is sane or not. llvm-svn: 31416 2006-11-03 19:04:08 +01:00			`])`
			`AC_SUBST(HUGE_VAL_SANITY,$ac_cv_huge_val_sanity)`
			`])`