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From 6fd1ea0d559a433aecccb21b63e91776e05a0831 Mon Sep 17 00:00:00 2001
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From: Alan Coopersmith <alan.coopersmith@oracle.com>
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Date: Thu, 5 Jan 2023 15:42:36 -0800
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Subject: [PATCH libXpm 4/6] configure: add --disable-open-zfile instead of
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requiring -DNO_ZPIPE
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Documents the two compression options in the README, makes their
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configure options reflect the interdependency of their implementation,
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and makes the configure script report their configuration.
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Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
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---
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README.md | 15 +++++++++++++++
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configure.ac | 36 +++++++++++++++++++++++-------------
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2 files changed, 38 insertions(+), 13 deletions(-)
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diff --git a/README.md b/README.md
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index f661e15..f3f4c93 100644
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--- a/README.md
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+++ b/README.md
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@@ -16,3 +16,18 @@ For patch submission instructions, see:
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https://www.x.org/wiki/Development/Documentation/SubmittingPatches
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+------------------------------------------------------------------------------
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+
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+libXpm supports two optional features to handle compressed pixmap files.
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+
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+--enable-open-zfile makes libXpm recognize file names ending in .Z and .gz
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+and open a pipe to the appropriate command to compress the file when writing
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+and uncompress the file when reading. This is enabled by default on platforms
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+other than MinGW and can be disabled by passing the --disable-open-zfile flag
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+to the configure script.
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+
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+--enable-stat-zfile make libXpm search for a file name with .Z or .gz added
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+if it can't find the file it was asked to open. It relies on the
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+--enable-open-zfile feature to open the file, and is enabled by default
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+when --enable-open-zfile is enabled, and can be disabled by passing the
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+--disable-stat-zfile flag to the configure script.
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diff --git a/configure.ac b/configure.ac
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index 365544b..85e2c73 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -49,25 +49,35 @@ if test "x$USE_GETTEXT" = "xyes" ; then
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fi
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AM_CONDITIONAL(USE_GETTEXT, test "x$USE_GETTEXT" = "xyes")
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+# Optional feature: When a filename ending in .Z or .gz is requested,
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+# open a pipe to a newly forked compress/uncompress/gzip/gunzip command to
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+# handle it.
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+AC_MSG_CHECKING([whether to handle compressed pixmaps])
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+case $host_os in
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+ *mingw*) zpipe_default="no" ;;
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+ *) zpipe_default="yes" ;;
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+esac
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+AC_ARG_ENABLE(open-zfile,
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+ AS_HELP_STRING([--enable-open-zfile],
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+ [Search for files with .Z & .gz extensions automatically @<:@default=auto@:>@]),
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+ [OPEN_ZFILE=$enableval], [OPEN_ZFILE=yes])
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+AC_MSG_RESULT([$OPEN_ZFILE])
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+if test x$OPEN_ZFILE = xno ; then
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+ AC_DEFINE(NO_ZPIPE, 1, [Define to 1 to disable decompression via pipes])
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+fi
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+
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# Optional feature: When ___.xpm is requested, also look for ___.xpm.Z & .gz
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# Replaces ZFILEDEF = -DSTAT_ZFILE in old Imakefile
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+AC_MSG_CHECKING([whether to search for compressed pixmaps])
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AC_ARG_ENABLE(stat-zfile,
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- AS_HELP_STRING([--enable-stat-zfile],
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- [Search for files with .Z & .gz extensions automatically @<:@default=yes@:>@]),
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- [STAT_ZFILE=$enableval], [STAT_ZFILE=yes])
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+ AS_HELP_STRING([--enable-stat-zfile],
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+ [Search for files with .Z & .gz extensions automatically @<:@default=auto@:>@]),
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+ [STAT_ZFILE=$enableval], [STAT_ZFILE=$OPEN_ZFILE])
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+AC_MSG_RESULT([$STAT_ZFILE])
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if test x$STAT_ZFILE = xyes ; then
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- AC_DEFINE(STAT_ZFILE, 1, [Define to 1 to automatically look for files with .Z & .gz extensions])
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+ AC_DEFINE(STAT_ZFILE, 1, [Define to 1 to automatically look for files with .Z & .gz extensions])
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fi
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-
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-case $host_os in
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- *mingw*)
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- AC_DEFINE(NO_ZPIPE, 1, [Define to 1 to disable decompression via pipes])
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- ;;
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- *)
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- ;;
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-esac
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-
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AC_CONFIG_FILES([Makefile
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doc/Makefile
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include/Makefile
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--
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2.39.0
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