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lua.m4
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dnl Check for LUA Libraries
dnl CHECK_LUA(ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
AC_DEFUN([CHECK_LUA],
[dnl
# Possible names for the lua library/package (pkg-config)
LUA_POSSIBLE_LIB_NAMES="lua54 lua5.4 lua-5.4 lua53 lua5.3 lua-5.3 lua52 lua5.2 lua-5.2 lua51 lua5.1 lua-5.1 lua"
# Possible extensions for the library
LUA_POSSIBLE_EXTENSIONS="so la sl dll dylib"
# Possible paths (if pkg-config was not found, proceed with the file lookup)
LUA_POSSIBLE_PATHS="/usr/lib /usr/local/lib /usr/local/lib64 /usr/local/lua /usr/local/liblua /usr/local /opt /usr /usr/lib64 /opt/local /usr/lib/lua5.3/liblua /usr/lib/lua5.2/liblua"
# Variables to be set by this very own script.
LUA_CFLAGS=""
LUA_LDFLAGS=""
LUA_LDADD=""
LUA_DISPLAY=""
AC_ARG_WITH(
lua,
AC_HELP_STRING(
[--with-lua=PATH],
[Path to lua prefix]
)
)
if test "x${with_lua}" == "xno"; then
AC_DEFINE(HAVE_LUA, 0, [Support for LUA was disabled by the utilization of --without-lua or --with-lua=no])
AC_MSG_NOTICE([Support for LUA was disabled by the utilization of --without-lua or --with-lua=no])
LUA_DISABLED=yes
else
if test "x${with_lua}" == "xyes"; then
LUA_MANDATORY=yes
AC_MSG_NOTICE([LUA support was marked as mandatory by the utilization of --with-lua=yes])
else
LUA_MANDATORY=no
fi
for x in ${LUA_POSSIBLE_PATHS}; do
CHECK_FOR_LUA_AT(${x})
if test -n "${LUA_CFLAGS}"; then
break
fi
done
if test -z "${LUA_CFLAGS}"; then
#Trying to figure out the version using pkg-config...
if test -n "${PKG_CONFIG}"; then
LUA_PKG_NAME=""
for x in ${LUA_POSSIBLE_LIB_NAMES}; do
if ${PKG_CONFIG} --exists ${x}; then
LUA_PKG_NAME="$x"
LUA_PKG_VERSION="`${PKG_CONFIG} ${LUA_PKG_NAME} --modversion`"
break
fi
done
fi
if test -n "${LUA_PKG_NAME}"; then
# Package was found using the pkg-config scripts
LUA_PKG_VERSION="`${PKG_CONFIG} ${LUA_PKG_NAME} --modversion`"
LUA_CFLAGS="`${PKG_CONFIG} ${LUA_PKG_NAME} --cflags`"
LUA_LDADD="`${PKG_CONFIG} ${LUA_PKG_NAME} --libs-only-l`"
LUA_LDFLAGS="`${PKG_CONFIG} ${LUA_PKG_NAME} --libs-only-L --libs-only-other`"
LUA_DISPLAY="${LUA_LDADD}, ${LUA_CFLAGS}"
case $LUA_PKG_VERSION in
(5.1*) LUA_CFLAGS="-DWITH_LUA_5_1 ${LUA_CFLAGS}" ; lua_5_1=1 ;;
(5.2*) LUA_CFLAGS="-DWITH_LUA_5_2 ${LUA_CFLAGS}" ; lua_5_2=1 ;;
(5.3*) LUA_CFLAGS="-DWITH_LUA_5_3 ${LUA_CFLAGS}" ; lua_5_3=1 ;;
(5.4*) LUA_CFLAGS="-DWITH_LUA_5_4 ${LUA_CFLAGS}" ; lua_5_4=1 ;;
(2.0*) LUA_CFLAGS="-DWITH_LUA_5_1 ${LUA_CFLAGS}" ; lua_5_1=1 ;;
(2.1*) LUA_CFLAGS="-DWITH_LUA_5_1 -DWITH_LUA_JIT_2_1 ${LUA_CFLAGS}" ; lua_5_1=1 ;;
esac
AC_MSG_NOTICE([LUA pkg-config version: ${LUA_PKG_VERSION}])
fi
fi
fi
if test -z "${LUA_CFLAGS}"; then
if test -z "${LUA_MANDATORY}" || test "x${LUA_MANDATORY}" == "xno"; then
if test -z "${LUA_DISABLED}"; then
AC_MSG_NOTICE([LUA library was not found])
LUA_FOUND=0
else
LUA_FOUND=2
fi
else
AC_MSG_ERROR([LUA was explicitly referenced but it was not found])
LUA_FOUND=-1
fi
else
if test -z "${LUA_MANDATORY}" || test "x${LUA_MANDATORY}" == "xno"; then
LUA_FOUND=1
AC_MSG_NOTICE([using LUA ${LUA_LDADD}])
LUA_CFLAGS="-DWITH_LUA ${LUA_CFLAGS}"
LUA_DISPLAY="${LUA_LDADD} ${LUA_LDFLAGS}, ${LUA_CFLAGS}"
AC_SUBST(LUA_LDFLAGS)
AC_SUBST(LUA_LDADD)
AC_SUBST(LUA_CFLAGS)
AC_SUBST(LUA_DISPLAY)
else
LUA_FOUND=1
AC_MSG_NOTICE([using LUA ${LUA_LDADD}])
LUA_CFLAGS="-DWITH_LUA ${LUA_CFLAGS}"
LUA_DISPLAY="${LUA_LDADD} ${LUA_LDFLAGS}, ${LUA_CFLAGS}"
AC_SUBST(LUA_LDFLAGS)
AC_SUBST(LUA_LDADD)
AC_SUBST(LUA_CFLAGS)
AC_SUBST(LUA_DISPLAY)
fi
fi
AC_SUBST(LUA_FOUND)
]) # AC_DEFUN [CHECK_LUA]
AC_DEFUN([CHECK_FOR_LUA_AT], [
path=$1
echo "*** LOOKING AT PATH: " ${path}
for y in ${LUA_POSSIBLE_EXTENSIONS}; do
for z in ${LUA_POSSIBLE_LIB_NAMES}; do
if test -e "${path}/${z}.${y}"; then
lua_lib_path="${path}/"
lua_lib_name="${z}"
lua_lib_file="${lua_lib_path}/${z}.${y}"
break
fi
if test -e "${path}/lib${z}.${y}"; then
lua_lib_path="${path}/"
lua_lib_name="${z}"
lua_lib_file="${lua_lib_path}/lib${z}.${y}"
break
fi
if test -e "${path}/lib/lib${z}.${y}"; then
lua_lib_path="${path}/lib/"
lua_lib_name="${z}"
lua_lib_file="${lua_lib_path}/lib${z}.${y}"
break
fi
if test -e "${path}/lib/x86_64-linux-gnu/lib${z}.${y}"; then
lua_lib_path="${path}/lib/x86_64-linux-gnu/"
lua_lib_name="${z}"
lua_lib_file="${lua_lib_path}/lib${z}.${y}"
break
fi
if test -e "${path}/lib/i386-linux-gnu/lib${z}.${y}"; then
lua_lib_path="${path}/lib/i386-linux-gnu/"
lua_lib_name="${z}"
lua_lib_file="${lua_lib_path}/lib${z}.${y}"
break
fi
done
if test -n "$lua_lib_path"; then
break
fi
done
if test -e "${path}/include/lua.h"; then
lua_inc_path="${path}/include"
elif test -e "${path}/lua.h"; then
lua_inc_path="${path}"
elif test -e "${path}/include/lua/lua.h"; then
lua_inc_path="${path}/include/lua"
elif test -e "${path}/include/lua5.4/lua.h"; then
lua_inc_path="${path}/include/lua5.4"
LUA_VERSION=504
elif test -e "${path}/include/lua5.3/lua.h"; then
lua_inc_path="${path}/include/lua5.3"
LUA_VERSION=503
elif test -e "${path}/include/lua5.2/lua.h"; then
lua_inc_path="${path}/include/lua5.2"
LUA_VERSION=502
elif test -e "${path}/include/lua5.1/lua.h"; then
lua_inc_path="${path}/include/lua5.1"
LUA_VERSION=501
elif test -e "${path}/include/luajit-2.0/lua.h"; then
lua_inc_path="${path}/include/luajit-2.0"
LUA_VERSION=501
fi
if test -n "${lua_lib_path}"; then
AC_MSG_NOTICE([LUA library found at: ${lua_lib_file}])
fi
if test -n "${lua_inc_path}"; then
AC_MSG_NOTICE([LUA headers found at: ${lua_inc_path}])
fi
if test -n "${lua_lib_path}" -a -n "${lua_inc_path}"; then
LUA_CFLAGS="-I${lua_inc_path}"
LUA_LDADD="-l${lua_lib_name}"
LUA_LDFLAGS="-L${lua_lib_path}"
LUA_DISPLAY="${lua_lib_file}, ${lua_inc_path}"
# Double checking version from lua.h...
AC_TRY_COMPILE([ #include <lua.h>> ],
[ #if (LUA_VERSION_NUM < 502)
return 0;
#else
#error Lua 5.1 not detected
#endif ],
[ LUA_VERSION=501 ], [ lua_5_1=0 ]
)
AC_TRY_COMPILE([ #include <lua.h> ],
[ #if (LUA_VERSION_NUM == 502)
return 0;
#else
#error Lua 5.2 not detected
#endif ],
[ LUA_VERSION=502 ], [ lua_5_2=0 ]
)
AC_TRY_COMPILE([ #include <lua.h> ],
[ #if (LUA_VERSION_NUM == 504)
return 0;
#else
#error Lua 5.4 not detected
#endif ],
[ LUA_VERSION=504 ], [ lua_5_4=0 ]
)
if test -z "${LUA_VERSION}" ; then
# As a last resort, try to find LUA version from $lua_inc_path
while read -r line
do
case "$line" in
(\#define\ LUA_VERSION_NUM*501*) LUA_VERSION=501 ;;
(\#define\ LUA_VERSION_NUM*502*) LUA_VERSION=502 ;;
(\#define\ LUA_VERSION_NUM*503*) LUA_VERSION=503 ;;
(\#define\ LUA_VERSION_NUM*504*) LUA_VERSION=504
esac
done <"${lua_inc_path}/lua.h"
AC_MSG_NOTICE([LUA_VERSION is ${LUA_VERSION} found at: ${lua_inc_path}])
else
AC_MSG_NOTICE([LUA version from includes: ${LUA_VERSION}])
fi
case $LUA_VERSION in
(501) LUA_CFLAGS="-DWITH_LUA_5_1 ${LUA_CFLAGS}" ; lua_5_1=1 ;;
(502) LUA_CFLAGS="-DWITH_LUA_5_2 ${LUA_CFLAGS}" ; lua_5_2=1 ;;
(503) LUA_CFLAGS="-DWITH_LUA_5_3 ${LUA_CFLAGS}" ; lua_5_3=1 ;;
(504) LUA_CFLAGS="-DWITH_LUA_5_4 ${LUA_CFLAGS}" ; lua_5_4=1 ;;
esac
fi
]) # AC_DEFUN [CHECK_FOR_LUA_AT]