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https://gitlab.com/mbunkus/mkvtoolnix.git
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de093c2913
`clang++ -dumpversion` always outputs 4.2.1 as it was designed to be compatible with `g++` in that version. So parse `clang++ --version` for `clang++` instead.
27 lines
777 B
Plaintext
27 lines
777 B
Plaintext
dnl
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dnl Precompiled headers
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dnl
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AC_ARG_ENABLE([precompiled_headers],
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AC_HELP_STRING([--enable-precompiled-headers],[enable the generation and use of precompiled headers (auto)]),
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[],
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[enable_precompiled_headers=auto])
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if test x"$enable_precompiled_headers" = x"auto"; then
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if ! check_version 4.1.0 $ac_cv_compiler_version ; then
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enable_precompiled_headers=no
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else
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enable_precompiled_headers=yes
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fi
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fi
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if test x"$enable_precompiled_headers" = x"yes"; then
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AC_DEFINE(USE_PRECOMPILED_HEADERS, 1, [Define if precompiled headers are generated and used])
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USE_PRECOMPILED_HEADERS=yes
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opt_features_yes="$opt_features_yes\n * pre-compiled headers"
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else
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opt_features_no="$opt_features_no\n * pre-compiled headers"
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fi
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AC_SUBST(USE_PRECOMPILED_HEADERS)
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