libvips/m4/nifti.m4

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2018-06-29 17:32:28 +02:00
dnl From FIND_MOTIF and ACX_PTHREAD, without much understanding
dnl
dnl FIND_NIFTI[ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]
dnl ------------------------------------------------
dnl
dnl Find NIFTI libraries and headers
dnl
dnl Put compile stuff in NIFTI_INCLUDES
dnl Put link stuff in NIFTI_LIBS
dnl Define HAVE_NIFTI if found
dnl
AC_DEFUN([FIND_NIFTI], [
AC_REQUIRE([AC_PATH_XTRA])
NIFTI_INCLUDES=""
NIFTI_LIBS=""
AC_ARG_WITH(nifti,
AS_HELP_STRING([--without-nifti], [build without nifti (default: test)]))
# Treat --without-nifti like --without-nifti-includes --without-nifti-libraries.
if test "$with_nifti" = "no"; then
NIFTI_INCLUDES=no
NIFTI_LIBS=no
fi
AC_ARG_WITH(nifti-includes,
AS_HELP_STRING([--with-nifti-includes=DIR], [libniftiio includes are in DIR]),
NIFTI_INCLUDES="-I$withval"
)
2018-06-29 17:32:28 +02:00
AC_ARG_WITH(nifti-libraries,
AS_HELP_STRING([--with-nifti-libraries=DIR],
[libniftiio libraries are in DIR]),
NIFTI_LIBS="-L$withval -lniftiio"
)
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AC_MSG_CHECKING(for NIFTI)
# Look for nifti1_io.h ... usually in /usr/include/nifti
if test "$NIFTI_INCLUDES" = ""; then
nifti_save_CFLAGS="$CFLAGS"
# annoyingly, the header must be unqualified, so we have to add to the
# search path
CFLAGS="-I/usr/include/nifti $nifti_save_CFLAGS"
AC_TRY_COMPILE([#include <nifti1_io.h>],[int a;],[
NIFTI_INCLUDES="-I/usr/include/nifti"
], [
# not in the standard search path, try $prefix
CFLAGS="-I${prefix}/include/nifti $nifti_save_CFLAGS"
AC_TRY_COMPILE([#include <nifti1_io.h>],[int a;],[
NIFTI_INCLUDES="-I${prefix}/include/nifti"
], [
NIFTI_INCLUDES="no"
])
])
CFLAGS="$nifti_save_CFLAGS"
fi
# Now for the libraries
if test "$NIFTI_LIBS" = ""; then
nifti_save_LIBS="$LIBS"
nifti_save_CFLAGS="$CFLAGS"
LIBS="-lniftiio -lm $nifti_save_LIBS"
CFLAGS="$NIFTI_INCLUDES $CFLAGS"
# Try the standard search path first
AC_TRY_LINK([#include <nifti1_io.h>],[is_nifti_file("")], [
NIFTI_LIBS="-lniftiio"
], [
# libniftiio is not in the standard search path, try $prefix
LIBS="-L${prefix}/lib $LIBS"
AC_TRY_LINK([#include <nifti1_io.h>],[is_nifti_file("")], [
NIFTI_LIBS="-L${prefix}/lib -lniftiio"
], [
NIFTI_LIBS=no
])
])
LIBS="$nifti_save_LIBS"
CFLAGS="$nifti_save_CFLAGS"
fi
AC_SUBST(NIFTI_LIBS)
AC_SUBST(NIFTI_INCLUDES)
# Print a helpful message
nifti_libraries_result="$NIFTI_LIBS"
nifti_includes_result="$NIFTI_INCLUDES"
if test x"$nifti_libraries_result" = x""; then
nifti_libraries_result="in default path"
fi
if test x"$nifti_includes_result" = x""; then
nifti_includes_result="in default path"
fi
if test "$nifti_libraries_result" = "no"; then
nifti_libraries_result="(none)"
fi
if test "$nifti_includes_result" = "no"; then
nifti_includes_result="(none)"
fi
AC_MSG_RESULT([libraries $nifti_libraries_result, headers $nifti_includes_result])
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
if test "$NIFTI_INCLUDES" != "no" && test "$NIFTI_LIBS" != "no"; then
AC_DEFINE(HAVE_NIFTI,1,[Define if you have nifti libraries and header files.])
$1
else
NIFTI_INCLUDES=""
NIFTI_LIBS=""
$2
fi
])dnl