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Don't warn about Xft >= 2.3.6

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* configure.ac: Don't warn about Xft >= 2.3.6.  Clarify warning
message printed on old releases.
This commit is contained in:
Po Lu 2025-03-12 17:28:27 +08:00
parent a5f2d6279e
commit 26f5e6339b
1 changed files with 20 additions and 6 deletions
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26
configure.ac
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@ -4486,6 +4486,7 @@ fi
### End of font-backend (under any platform) section.
### Start of font-backend (under X11) section.
is_xft_version_outdated=no
if test "${HAVE_X11}" = "yes"; then
if test $HAVE_CAIRO = yes; then
dnl Strict linkers fail with
@ -4534,7 +4535,20 @@ if test "${HAVE_X11}" = "yes"; then
if test "${HAVE_XFT}" = "yes"; then
AC_DEFINE([HAVE_XFT], [1], [Define to 1 if you have the Xft library.])
AC_SUBST([XFT_LIBS])
AC_SUBST([XFT_LIBS])
AC_CACHE_CHECK([whether libXft is not recent enough to support color fonts],
[emacs_cv_is_xft_version_outdated],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[
#include <X11/Xlib.h>
#include <X11/Xft/Xft.h>
#if XftVersion < 20306
#error "Xft < 2.3.6"
#endif /* XftVersion < 20306 */
]], [])],
[emacs_cv_is_xft_version_outdated=no],
[emacs_cv_is_xft_version_outdated=yes])])
is_xft_version_outdated=$emacs_cv_is_xft_version_outdated
C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
fi # "${HAVE_XFT}" = "yes"
CPPFLAGS=$OLD_CPPFLAGS
@ -7863,11 +7877,11 @@ you can continue to support by using '$0 --with-pop'.])
esac
fi
if test "${HAVE_XFT}" = yes; then
AC_MSG_WARN([This configuration uses libXft, which has a number of
font rendering issues in its earlier releases. Please consider
using Cairo graphics instead (they are auto-detected if the
relevant development headers are installed).])
if test "${HAVE_XFT}" = yes && test "$is_xft_version_outdated" = "yes"; then
AC_MSG_WARN([This configuration uses a version of libXft earlier than 2.3.6,
which is impacted by a number of rendering issues up to and including
crashes. Please consider using Cairo graphics instead (they are
auto-detected if the relevant development headers are installed).])
fi
if test "${HAVE_CAIRO}" = "yes" && test "${HAVE_HARFBUZZ}" = no; then