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|
dnl Check for PCRE2 Libraries
dnl CHECK_PCRE2(ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
AC_DEFUN([PROG_PCRE2], [
# Possible names for the pcre2 library/package (pkg-config)
PCRE2_POSSIBLE_LIB_NAMES="libpcre2 libpcre2-8"
# Possible extensions for the library
PCRE2_POSSIBLE_EXTENSIONS="so so0 la sl dll dylib so.0.0.0"
# Possible paths (if pkg-config was not found, proceed with the file lookup)
PCRE2_POSSIBLE_PATHS="/usr/lib /usr/local/lib /usr/local/libpcre2-8 /usr/local/pcre2 /usr/local /opt/libpcre2-8 /opt/pcre2 /opt /usr /usr/lib64 /opt/local"
# Variables to be set by this very own script.
PCRE2_VERSION=""
PCRE2_CFLAGS=""
PCRE2_CPPFLAGS=""
PCRE2_LDADD=""
PCRE2_LDFLAGS=""
AC_ARG_WITH(
pcre2,
[AS_HELP_STRING([--with-pcre2=PATH],[Path to pcre2 prefix or config script])]
)
if test "x${with_pcre2}" == "xno"; then
AC_DEFINE(HAVE_PCRE2, 0, [Support for PCRE2 was disabled by the utilization of --without-pcre2 or --with-pcre2=no])
AC_MSG_NOTICE([Support for PCRE2 was disabled by the utilization of --without-pcre2 or --with-pcre2=no])
PCRE2_DISABLED=yes
else
if test "x${with_pcre2}" == "xyes"; then
PCRE2_MANDATORY=yes
AC_MSG_NOTICE([PCRE2 support was marked as mandatory by the utilization of --with-pcre2=yes])
fi
# for x in ${PCRE2_POSSIBLE_LIB_NAMES}; do
# CHECK_FOR_PCRE2_AT(${x})
# if test -n "${PCRE2_VERSION}"; then
# break
# fi
# done
# if test "x${with_pcre2}" != "xyes" or test "x${with_pcre2}" == "xyes"; then
if test "x${with_pcre2}" == "x" || test "x${with_pcre2}" == "xyes"; then
# Nothing about PCRE2 was informed, using the pkg-config to figure things out.
if test -n "${PKG_CONFIG}"; then
PCRE2_PKG_NAME=""
for x in ${PCRE2_POSSIBLE_LIB_NAMES}; do
if ${PKG_CONFIG} --exists ${x}; then
PCRE2_PKG_NAME="$x"
break
fi
done
fi
AC_MSG_NOTICE([Nothing about PCRE2 was informed during the configure phase. Trying to detect it on the platform...])
if test -n "${PCRE2_PKG_NAME}"; then
# Package was found using the pkg-config scripts
PCRE2_VERSION="`${PKG_CONFIG} ${PCRE2_PKG_NAME} --modversion`"
PCRE2_CFLAGS="`${PKG_CONFIG} ${PCRE2_PKG_NAME} --cflags`"
PCRE2_LDADD="`${PKG_CONFIG} ${PCRE2_PKG_NAME} --libs-only-l`"
PCRE2_LDFLAGS="`${PKG_CONFIG} ${PCRE2_PKG_NAME} --libs-only-L --libs-only-other`"
PCRE2_DISPLAY="${PCRE2_LDADD}, ${PCRE2_CFLAGS}"
else
# If pkg-config did not find anything useful, go over file lookup.
for x in ${PCRE2_POSSIBLE_PATHS}; do
CHECK_FOR_PCRE2_AT(${x})
if test -n "${PCRE2_VERSION}"; then
break
fi
done
fi
fi
if test "x${with_pcre2}" != "x"; then
# An specific path was informed, lets check.
PCRE2_MANDATORY=yes
CHECK_FOR_PCRE2_AT(${with_pcre2})
fi
# fi
fi
if test -z "${PCRE2_LDADD}"; then
if test -z "${PCRE2_MANDATORY}"; then
if test -z "${PCRE2_DISABLED}"; then
AC_MSG_NOTICE([PCRE2 library was not found])
PCRE2_FOUND=0
else
PCRE2_FOUND=2
fi
else
AC_MSG_ERROR([PCRE2 was explicitly referenced but it was not found])
PCRE2_FOUND=-1
fi
else
if test -z "${PCRE2_MANDATORY}"; then
PCRE2_FOUND=2
AC_MSG_NOTICE([PCRE2 is disabled by default.])
else
PCRE2_FOUND=1
AC_MSG_NOTICE([using PCRE2 v${PCRE2_VERSION}])
PCRE2_CFLAGS="-DWITH_PCRE2 ${PCRE2_CFLAGS}"
PCRE2_DISPLAY="${PCRE2_LDADD}, ${PCRE2_CFLAGS}"
AC_SUBST(PCRE2_VERSION)
AC_SUBST(PCRE2_LDADD)
AC_SUBST(PCRE2_LIBS)
AC_SUBST(PCRE2_LDFLAGS)
AC_SUBST(PCRE2_CFLAGS)
AC_SUBST(PCRE2_DISPLAY)
fi
fi
AC_SUBST(PCRE2_FOUND)
]) # AC_DEFUN [PROG_PCRE2]
AC_DEFUN([CHECK_FOR_PCRE2_AT], [
path=$1
echo "*** LOOKING AT PATH: " ${path}
for y in ${PCRE2_POSSIBLE_EXTENSIONS}; do
for z in ${PCRE2_POSSIBLE_LIB_NAMES}; do
if test -e "${path}/${z}.${y}"; then
pcre2_lib_path="${path}/"
pcre2_lib_name="${z}"
pcre2_lib_file="${pcre2_lib_path}/${z}.${y}"
break
fi
if test -e "${path}/lib${z}.${y}"; then
pcre2_lib_path="${path}/"
pcre2_lib_name="${z}"
pcre2_lib_file="${pcre2_lib_path}/lib${z}.${y}"
break
fi
if test -e "${path}/lib/lib${z}.${y}"; then
pcre2_lib_path="${path}/lib/"
pcre2_lib_name="${z}"
pcre2_lib_file="${pcre2_lib_path}/lib${z}.${y}"
break
fi
if test -e "${path}/lib/x86_64-linux-gnu/lib${z}.${y}"; then
pcre2_lib_path="${path}/lib/x86_64-linux-gnu/"
pcre2_lib_name="${z}"
pcre2_lib_file="${pcre2_lib_path}/lib${z}.${y}"
break
fi
if test -e "${path}/lib/i386-linux-gnu/lib${z}.${y}"; then
pcre2_lib_path="${path}/lib/i386-linux-gnu/"
pcre2_lib_name="${z}"
pcre2_lib_file="${pcre2_lib_path}/lib${z}.${y}"
break
fi
done
if test -n "$pcre2_lib_path"; then
break
fi
done
if test -e "${path}/include/pcre2.h"; then
pcre2_inc_path="${path}/include"
elif test -e "${path}/pcre2.h"; then
pcre2_inc_path="${path}"
elif test -e "${path}/include/pcre2/pcre2.h"; then
pcre2_inc_path="${path}/include"
fi
if test -n "${pcre2_lib_path}"; then
AC_MSG_NOTICE([PCRE2 library found at: ${pcre2_lib_file}])
fi
if test -n "${pcre2_inc_path}"; then
AC_MSG_NOTICE([PCRE2 headers found at: ${pcre2_inc_path}])
fi
if test -n "${pcre2_lib_path}" -a -n "${pcre2_inc_path}"; then
# TODO: Compile a piece of code to check the version.
PCRE2_CFLAGS="-I${pcre2_inc_path}"
PCRE2_LDADD="-l${pcre2_lib_name}"
PCRE2_LDFLAGS="-L${pcre2_lib_path}"
PCRE2_DISPLAY="${pcre2_lib_file}, ${pcre2_inc_path}"
fi
]) # AC_DEFUN [CHECK_FOR_PCRE2_AT]
|
