Remove the high-level GIF tools (#4976)

The high-level GIF tools, h52gif and gif2h5, have unfixed CVE issues
(with no proof-of-concept files). They are not critical tools, are not
well maintained, and are an odd fit for building with the library.
Because of this, they have been removed. We may move them to a separate
repository in the future.

configure.ac

@@ -1154,7 +1154,6 @@ AC_LANG_POP(C++)
 ## library is disabled.
 AC_SUBST([HDF5_HL])
 AC_SUBST([HDF5_HL_TOOLS])
-AC_SUBST([HDF5_HL_GIF_TOOLS])
 
 ## The high-level library and high-level tools are enabled unless the build mode
 ## is clean.
@@ -1477,27 +1476,6 @@ AC_ARG_ENABLE([tools],
 
 AC_MSG_RESULT([$HDF5_TOOLS])
 
-## ----------------------------------------------------------------------
-## Check if they would like to disable building the high-level GIF
-## tools (they have unfixed CVE issues)
-##
-
-AC_MSG_CHECKING([if the high-level GIF tools are enabled])
-AC_ARG_ENABLE([hlgiftools],
-     [AS_HELP_STRING([--enable-hlgiftools],
-                     [Enable the high-level GIF tools. NOTE: These have unfixed CVE issues!
-                     [default=no]
-                     ])],
-     [HDF5_HL_GIF_TOOLS=$enableval])
-
-if test "X-$HDF5_TOOLS" = "X-yes" -a "X-$HDF5_HL" = "X-yes" -a "X-$HDF5_HL_GIF_TOOLS" = "X-yes"; then
-  AC_MSG_RESULT([yes])
-else
-  AC_MSG_RESULT([no])
-  HDF5_HL_GIF_TOOLS="no"
-fi
-
-
 ## ----------------------------------------------------------------------
 ## Check if they would like to enable building doxygen files
 ##
@@ -4411,7 +4389,6 @@ AM_CONDITIONAL([BUILD_HDF5_HL_CONDITIONAL], [test "X$HDF5_HL" = "Xyes"])
 AM_CONDITIONAL([BUILD_TESTS_CONDITIONAL], [test "X$HDF5_TESTS" = "Xyes"])
 AM_CONDITIONAL([BUILD_TESTS_PARALLEL_CONDITIONAL], [test -n "$TESTPARALLEL"])
 AM_CONDITIONAL([BUILD_TOOLS_CONDITIONAL], [test "X$HDF5_TOOLS" = "Xyes"])
-AM_CONDITIONAL([BUILD_TOOLS_HL_GIF_CONDITIONAL], [test "X$HDF5_HL_GIF_TOOLS" = "Xyes"])
 AM_CONDITIONAL([BUILD_DOXYGEN_CONDITIONAL], [test "X$HDF5_DOXYGEN" = "Xyes"])
 
 ## ----------------------------------------------------------------------
@@ -4619,8 +4596,6 @@ AC_CONFIG_FILES([Makefile
                  hl/test/Makefile
                  hl/test/H5srcdir_str.h
                  hl/tools/Makefile
-                 hl/tools/gif2h5/Makefile
-                 hl/tools/gif2h5/h52giftest.sh
                  hl/tools/h5watch/Makefile
                  hl/tools/h5watch/testh5watch.sh
                  hl/examples/Makefile

hl/tools/CMakeLists.txt

@@ -1,12 +1,4 @@
 cmake_minimum_required (VERSION 3.18)
 project (HDF5_HL_TOOLS C)
 
-#-----------------------------------------------------------------------------
-#-- Option to build the High level GIF Tools
-#-----------------------------------------------------------------------------
-option (HDF5_BUILD_HL_GIF_TOOLS  "Build HDF5 HL GIF Tools" OFF)
-if (HDF5_BUILD_HL_GIF_TOOLS)
-  add_subdirectory (gif2h5)
-endif ()
-
 add_subdirectory (h5watch)

hl/tools/Makefile.am

@@ -18,13 +18,7 @@
 
 include $(top_srcdir)/config/commence.am
 
-if BUILD_TOOLS_HL_GIF_CONDITIONAL
-  TOOLS_GIF_DIR = gif2h5
-else
-  TOOLS_GIF_DIR =
-endif
-
 # All subdirectories
-SUBDIRS=h5watch $(TOOLS_GIF_DIR)
+SUBDIRS=h5watch
 
 include $(top_srcdir)/config/conclude.am