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1 dnl Usage: TL_AC_GXX_INCLUDE_DIR
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2 dnl
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3 dnl Set $gxx_include_dir to the location of the installed C++ include
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4 dnl directory. The value depends on $gcc_version and the configuration
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5 dnl options --with-gxx-include-dir and --enable-version-specific-runtime-libs.
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6 dnl
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7 dnl If you change the default here, you'll need to change the gcc and
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8 dnl libstdc++-v3 subdirectories too.
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9 AC_DEFUN([TL_AC_GXX_INCLUDE_DIR],
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10 [
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11 case "${with_gxx_include_dir}" in
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12 yes)
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13 AC_MSG_ERROR([--with-gxx-include-dir=[[dir]] requires a directory])
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14 ;;
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15 no | "")
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16 case "${enable_version_specific_runtime_libs}" in
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17 yes) gxx_include_dir='$(libsubdir)/include/c++' ;;
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18 *)
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19 libstdcxx_incdir='c++/$(gcc_version)'
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20 gxx_include_dir='include/$(libstdcxx_incdir)'
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21 if test -n "$with_cross_host" &&
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22 test x"$with_cross_host" != x"no"; then
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23 gxx_include_dir='${prefix}/${target_alias}/'"$gxx_include_dir"
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24 else
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25 gxx_include_dir='${prefix}/'"$gxx_include_dir"
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26 fi;;
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27 esac ;;
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28 *) gxx_include_dir=${with_gxx_include_dir} ;;
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29 esac
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30 AC_SUBST(gxx_include_dir)
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31 AC_SUBST(libstdcxx_incdir)
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32 ])
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