addpkg(main/libraw): 0.21.3

openmp is disabled because imagemagick also disabled it. Otherwise, the
following runtime error is shown with imagemagick.
CANNOT LINK EXECUTABLE "magick": cannot locate symbol "__kmpc_global_thread_num" referenced by "PREFIX/lib/libraw_r.so"

packages/libraw/build.sh

@@ -0,0 +1,20 @@
+TERMUX_PKG_HOMEPAGE=https://www.libraw.org/
+TERMUX_PKG_DESCRIPTION="Library for reading RAW files from digital cameras"
+TERMUX_PKG_LICENSE="CDDL-1.0, LGPL-2.1"
+TERMUX_PKG_LICENSE_FILE="COPYRIGHT, LICENSE.CDDL, LICENSE.LGPL"
+TERMUX_PKG_MAINTAINER="@termux"
+TERMUX_PKG_VERSION="0.21.3"
+TERMUX_PKG_SRCURL=https://www.libraw.org/data/LibRaw-${TERMUX_PKG_VERSION}.tar.gz
+TERMUX_PKG_SHA256=dba34b7fc1143503942fa32ad9db43e94f714e62a4a856e91617f8f3e1e0aa5c
+TERMUX_PKG_AUTO_UPDATE=true
+TERMUX_PKG_DEPENDS="libc++, libjasper, libjpeg-turbo, littlecms, zlib"
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
+--disable-openmp
+"
+
+termux_step_pre_configure() {
+	local _libgcc_file="$($CC -print-libgcc-file-name)"
+	local _libgcc_path="$(dirname $_libgcc_file)"
+	local _libgcc_name="$(basename $_libgcc_file)"
+	LDFLAGS+=" -L$_libgcc_path -l:$_libgcc_name"
+}