mkvtoolnix/ac/debugging_profiling.m4

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dnl
dnl Debugging, profiling and optimization options
dnl
AC_ARG_ENABLE([debug],
AC_HELP_STRING([--enable-debug],[compile with debug information (no)]),
[],
[enable_debug=no])
AC_ARG_ENABLE([profiling],
AC_HELP_STRING([--enable-profiling],[compile with profiling information (no)]),
[],
[enable_profiling=no])
AC_ARG_ENABLE([optimization],
AC_HELP_STRING([--enable-optimization],[compile with optimization: -O3 (yes)]),
[],
[if test x"$enable_debug" = xyes ; then
enable_optimization=no
else
enable_optimization=yes
fi])
DEBUG_CFLAGS=""
OPTIMIZATION_CFLAGS=""
PROFILING_CFLAGS=""
PROFILING_LIBS=""
if test x"$enable_debug" = xyes ; then
DEBUG_CFLAGS="-g -DDEBUG"
opt_features_yes="$opt_features_yes\n * debugging information"
else
opt_features_no="$opt_features_no\n * debugging information"
fi
if test x"$enable_optimization" = xyes; then
if test x"$ac_cv_compiler_is_clang" = xyes; then
opt_features_no="$opt_features_no\n * full optimization: due to bug 11962 in LLVM/clang only -O1 will be used for optimization"
OPTIMIZATION_CFLAGS="-O1"
else
OPTIMIZATION_CFLAGS="-O3"
fi
opt_features_yes="$opt_features_yes\n * compiler optimizations"
else
opt_features_no="$opt_features_no\n * compiler optimizations"
fi
if test x"$enable_profiling" = xyes ; then
PROFILING_CFLAGS="-pg"
PROFILING_LIBS="-pg"
opt_features_yes="$opt_features_yes\n * profiling support"
else
opt_features_no="$opt_features_no\n * profiling support"
fi
AC_SUBST(DEBUG_CFLAGS)
AC_SUBST(PROFILING_CFLAGS)
AC_SUBST(PROFILING_LIBS)
AC_SUBST(OPTIMIZATION_CFLAGS)