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automatic search for fftw3 can be disabled - default is yes

This commit is contained in:
dwarning 2018-09-03 19:56:15 +02:00 committed by Holger Vogt
parent bd5379d760
commit 79a5a7942a
1 changed files with 8 additions and 2 deletions
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10
configure.ac
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@ -190,6 +190,10 @@ AC_ARG_ENABLE([help],
AC_ARG_ENABLE([xgraph],
[AS_HELP_STRING([--enable-xgraph], [Enable xgraph compilation.])])
# --with-fftw3: Use fftw3 for Fourier transforms. Default is "yes".
AC_ARG_WITH([fftw3],
[AS_HELP_STRING([--with-fftw3[=yes/no]], [Use fftw3 for Fourier transforms. Default=yes.])])
# readline and editline cannot both be enabled
if test "x$with_editline" = xyes; then
if test "x$with_readline" = xyes; then
@ -735,10 +739,12 @@ AC_MSG_RESULT([Checking mathematical features of the system:])
# Look for math library:
AC_CHECK_LIB([m], [sqrt])
AC_CHECK_HEADERS([float.h limits.h values.h ieeefp.h])
AC_CHECK_HEADERS([fftw3.h])
AC_CHECK_LIB([fftw3], [fftw_plan_dft_1d],
if test "x$with_fftw3" != xno; then
AC_CHECK_HEADERS([fftw3.h])
AC_CHECK_LIB([fftw3], [fftw_plan_dft_1d],
[AC_DEFINE([HAVE_LIBFFTW3], [], [Have fft routines in libfftw3])
LIBS="$LIBS -lfftw3"])
fi
# Check for a few mathematical functions:
AC_CHECK_FUNCS([erfc logb scalb scalbn asinh acosh atanh finite])