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| author | Reid Spencer <rspencer@reidspencer.com> | 2004-09-07 06:56:14 +0000 |
|---|---|---|
| committer | Reid Spencer <rspencer@reidspencer.com> | 2004-09-07 06:56:14 +0000 |
| commit | 491f6812ef173989612d987fa8706fd38e2e673f (patch) | |
| tree | 0ba6404a9be355d9bbd5e526efe32e3b0bc29afa /autoconf/m4/single_cxx_check.m4 | |
| parent | 10c0a2e7f955cbe6cc8c842e6d8aebc10ac91f4c (diff) | |
| download | llvm-491f6812ef173989612d987fa8706fd38e2e673f.tar.gz llvm-491f6812ef173989612d987fa8706fd38e2e673f.tar.bz2 llvm-491f6812ef173989612d987fa8706fd38e2e673f.tar.xz | |
Individual autoconf function broken out of acincludes.m4. This change
per the recommended style guide for autoconf and so that individual
autoconf functions can more easily be shared across projects.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16223 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf/m4/single_cxx_check.m4')
| -rw-r--r-- | autoconf/m4/single_cxx_check.m4 | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/autoconf/m4/single_cxx_check.m4 b/autoconf/m4/single_cxx_check.m4 new file mode 100644 index 0000000000..c5e4b199c6 --- /dev/null +++ b/autoconf/m4/single_cxx_check.m4 @@ -0,0 +1,48 @@ +dnl AC_SINGLE_CXX_CHECK(DEFINEVAR, CACHEVAR, FUNCTION, HEADER, PROGRAM) +dnl $1, $2, $3, $4, $5 +dnl +AC_DEFUN([AC_SINGLE_CXX_CHECK], +[AC_CACHE_CHECK([for $3 in $4], [$2], + [AC_LANG_PUSH(C++) + AC_COMPILE_IFELSE(AC_LANG_SOURCE([$5]),[$2=yes],[$2=no]) + AC_LANG_POP(C++)]) + if test "$$2" = "yes" + then + AC_DEFINE($1, 1, [Define to 1 if your compiler defines $3 in the $4 + header file.]) + fi]) + +AC_DEFUN([AC_FUNC_ISNAN],[ +AC_SINGLE_CXX_CHECK([HAVE_ISNAN_IN_MATH_H], [ac_cv_func_isnan_in_math_h], + [isnan], [<math.h>], + [#include <math.h> + int foo(float f) {return isnan(f);}]) +AC_SINGLE_CXX_CHECK([HAVE_ISNAN_IN_CMATH], [ac_cv_func_isnan_in_cmath], + [isnan], [<cmath>], + [#include <cmath> + int foo(float f) {return isnan(f);}]) +AC_SINGLE_CXX_CHECK([HAVE_STD_ISNAN_IN_CMATH], [ac_cv_func_std_isnan_in_cmath], + [std::isnan], [<cmath>], + [#include <cmath> + using std::isnan; int foo(float f) {return isnan(f);}]) +]) + +AC_DEFUN([AC_FUNC_ISINF],[ +AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_MATH_H], [ac_cv_func_isinf_in_math_h], + [isinf], [<math.h>], + [#include <math.h> + int foo(float f) {return isinf(f);}]) +AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_CMATH], [ac_cv_func_isinf_in_cmath], + [isinf], [<cmath>], + [#include <cmath> + int foo(float f) {return isinf(f);}]) +AC_SINGLE_CXX_CHECK([HAVE_STD_ISINF_IN_CMATH], [ac_cv_func_std_isinf_in_cmath], + [std::isinf], [<cmath>], + [#include <cmath> + using std::isinf; int foo(float f) {return isinf(f);}]) +AC_SINGLE_CXX_CHECK([HAVE_FINITE_IN_IEEEFP_H], [ac_cv_func_finite_in_ieeefp_h], + [finite], [<ieeefp.h>], + [#include <ieeefp.h> + int foo(float f) {return finite(f);}]) +]) + |