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# SYNOPSIS
#
# AX_CHECK_OPENEXR(required_version)
#
# DESCRIPTION
#
# Check whether the system has OpenEXR version required_version.
#
# LAST MODIFICATION
#
# 2021-06-15
#
# COPYLEFT
#
# Copyright (c) 2006 Nicolas Calimet
#
# Copying and distribution of this file, with or without
# modification, are permitted in any medium without royalty provided
# the copyright notice and this notice are preserved.
AC_DEFUN([AX_CHECK_OPENEXR],
[
AC_CHECK_PROGS([PKGCONFIG], [pkg-config])
AC_MSG_CHECKING([for OpenEXR's pkg-config])
ax_check_openexr=`pkg-config --print-errors OpenEXR 2>&1`
if test x"$ax_check_openexr" != x""; then
ax_check_openexr="not found"
AC_MSG_RESULT([$ax_check_openexr])
else
AC_MSG_RESULT([yes])
AC_MSG_CHECKING([for OpenEXR version >= $1])
ax_check_openexr_version=`pkg-config --modversion OpenEXR 2>&1 | tail -1 | grep -v "No package"`
if test x"$ax_check_openexr_version" != x""; then
AX_COMPARE_VERSION([$ax_check_openexr_version], [ge], [$1], [ax_check_openexr="ok"], [ax_check_openexr="bad"])
AC_MSG_RESULT([$ax_check_openexr_version, $ax_check_openexr])
else
ax_check_openexr="unknown"
AC_MSG_RESULT([$ax_check_openexr])
fi
if test x"$ax_check_openexr" = x"ok"; then
ax_check_openexr_cflags=`pkg-config --cflags OpenEXR 2> /dev/null`
ax_check_openexr_libs=`pkg-config --libs OpenEXR 2> /dev/null`
ax_check_openexr_save_cppflags="$CPPFLAGS"
ax_check_openexr_save_libs="$LIBS"
CPPFLAGS="$ax_check_openexr_cflags $CPPFLAGS"
LIBS="$ax_check_openexr_libs $LIBS"
AC_CHECK_HEADER(
[OpenEXR/ImfCRgbaFile.h],
[ax_check_openexr="ok"],
[ax_check_openexr="no headers"]
)
fi
if test x"$ax_check_openexr" != x"ok"; then
CPPFLAGS="$ax_check_openexr_save_cppflags"
LIBS="$ax_check_openexr_save_libs"
fi
fi
])
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