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better compat with older libheif

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We were looking for "yes" from the builtin_h265_decoder variable to
enable heifload, but this variable was only added in libheif 1.3, so we
failed to turn on heifload correctly.

We now look for not "no", ie. default on.

See https://github.com/libvips/build-win64/pull/26#issuecomment-490854408
This commit is contained in:
John Cupitt 2019-05-10 12:59:24 +01:00
parent 3e60e816ed
commit b2ad9f9df8
1 changed files with 4 additions and 2 deletions
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6
configure.ac
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@ -930,12 +930,14 @@ if test x"$with_heif" != x"no"; then
PKG_CHECK_MODULES(HEIF, libheif,
[with_heif=yes
have_h265_decoder=`$PKG_CONFIG libheif --variable builtin_h265_decoder`
if test x"$have_h265_decoder" = x"yes"; then
# test for !=no so that we work for older libheif which does not have
# this variable
if test x"$have_h265_decoder" != x"no"; then
AC_DEFINE(HAVE_HEIF_DECODER,1,
[define if your libheif has decode support.])
fi
have_h265_encoder=`$PKG_CONFIG libheif --variable builtin_h265_encoder`
if test x"$have_h265_encoder" = x"yes"; then
if test x"$have_h265_encoder" != x"no"; then
AC_DEFINE(HAVE_HEIF_ENCODER,1,
[define if your libheif has encode support.])
fi