kopia lustrzana https://github.com/jamescoxon/dl-fldigi
52 wiersze
2.0 KiB
Plaintext
52 wiersze
2.0 KiB
Plaintext
dnl Look for a working std::hash or std::tr1::hash.
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dnl test for gcc ge 4.1
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AC_DEFUN([AC_FLDIGI_HASH], [
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AC_LANG_PUSH(C++)
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AC_MSG_CHECKING([for std::hash in <unordered_map>])
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AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include <unordered_map>
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void f(void) { }]],
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[[std::hash<int>()(1);]])],
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[ac_cv_std_hash=yes], [ac_cv_std_hash=no] )
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AC_MSG_RESULT([$ac_cv_std_hash])
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if test "x$ac_cv_std_hash" = "xyes"; then
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AC_DEFINE(HAVE_STD_HASH, 1, [Define to 1 if we have std::hash in <unordered_map>])
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else
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AC_DEFINE(HAVE_STD_HASH, 0, [Define to 0 if we do not have std::hash in <unordered_map>])
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fi
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if test "x$ac_cv_std_hash" = "xno"; then
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AC_MSG_CHECKING([for std::tr1::hash in <tr1/unordered_map>])
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AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include <tr1/unordered_map>
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void f(void) { }]],
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[[std::tr1::hash<int>()(1);]])],
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[ac_cv_std_tr1_hash=yes], [ac_cv_std_tr1_hash=no] )
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AC_MSG_RESULT([$ac_cv_std_tr1_hash])
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if test "x$ac_cv_std_tr1_hash" = "xyes"; then
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AC_DEFINE(HAVE_STD_TR1_HASH, 1, [Define to 1 if we have std::tr1::hash in <tr1/unordered_map>])
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else
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AC_DEFINE(HAVE_STD_TR1_HASH, 0, [Define to 1 if we do not have std::tr1::hash in <tr1/unordered_map>])
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fi
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fi
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if test "x$ac_cv_std_hash" = "xno" && test "x$ac_cv_std_tr1_hash" = "xno"; then
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AC_MSG_ERROR([Could not find std::hash or std::tr1::hash])
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fi
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gcc_dver=$(gcc -dumpversion)
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gcc_minver=4.1.0
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AC_MSG_CHECKING([for gcc version >= $gcc_minver])
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AX_COMPARE_VERSION([$gcc_dver], [ge], [$gcc_minver],
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[AC_MSG_RESULT([yes ($gcc_dver)])]; GCCVER="ok",
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[AC_MSG_RESULT([no ($gcc_dver)])]; GCCVER="bad")
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if test "y$GCCVER" = "yok"; then
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AC_DEFINE(GCC_VER_OK, 1, [Define to 1 if gcc >= 4.1.0])
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else
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AC_DEFINE(GCC_VER_OK, 0, [Define to 1 if gcc >= 4.1.0])
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fi
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AC_LANG_POP(C++)
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])
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