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Find libbpf with pkg-config

This commit is contained in:
Tatsuhiro Tsujikawa 2021-08-29 13:43:07 +09:00
parent 7d13891066
commit 1e75be3b5d
2 changed files with 10 additions and 34 deletions
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2
README.rst
View File

@ -157,7 +157,7 @@ In order to build optional eBPF program to direct an incoming QUIC UDP
datagram to a correct socket for nghttpx, the following libraries are
required:
* libbpf-dev
* libbpf-dev >= 0.4.0
Compiling libnghttp2 C source code requires a C99 compiler. gcc 4.8
is known to be adequate. In order to compile the C++ source code, gcc

42
configure.ac
View File

@ -205,8 +205,6 @@ AC_ARG_VAR([JEMALLOC_LIBS], [linker flags for jemalloc, skipping any checks])
AC_ARG_VAR([LIBTOOL_LDFLAGS],
[libtool specific flags (e.g., -static-libtool-libs)])
AC_ARG_VAR([LIBBPF_LIBS], [linker flags for libbpf, skipping any checks])
AC_ARG_VAR([BPFCFLAGS], [C compiler flags for bpf program])
dnl Checks for programs
@ -554,37 +552,15 @@ fi
# libbpf (for src)
have_libbpf=no
if test "x${request_libbpf}" != "xno"; then
if test "x${LIBBPF_LIBS}" = "x"; then
save_CFLAGS=$CFLAGS
save_LDFLAGS=$LDFLAGS
LDFLAGS="-lbpf"
AC_MSG_CHECKING([for libbpf])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
]], [[
bpf_object__open_file("placeholder.o", NULL);
]])],
[AC_MSG_RESULT([yes]); have_libbpf=yes],
[AC_MSG_RESULT([no]); have_libbpf=no])
if test "x${have_libbpf}" = "xyes"; then
AC_DEFINE([HAVE_LIBBPF], [1], [Define to 1 if you have `libbpf` library.])
LIBBPF_LIBS=$LDFLAGS
AC_SUBST([LIBBPF_LIBS])
if test "x${BPFCFLAGS}" = "x"; then
BPFCFLAGS="-Wall -O2"
fi
# Add the include path for Debian
EXTRABPFCFLAGS="-I/usr/include/$host_cpu-$host_os"
AC_SUBST([EXTRABPFCFLAGS])
fi
CFLAGS=$save_CFLAGS
LDFLAGS=$save_LDFLAGS
PKG_CHECK_MODULES([LIBBPF], [libbpf >= 0.4.0], [have_libbpf=yes],
[have_libbpf=no])
if test "x${have_libbpf}" = "xyes"; then
AC_DEFINE([HAVE_LIBBPF], [1], [Define to 1 if you have `libbpf` library.])
# Add the include path for Debian
EXTRABPFCFLAGS="-I/usr/include/$host_cpu-$host_os"
AC_SUBST([EXTRABPFCFLAGS])
else
have_libbpf=yes
AC_MSG_NOTICE($LIBBPF_PKG_ERRORS)
fi
fi
@ -1203,7 +1179,7 @@ AC_MSG_NOTICE([summary of build options:
libngtcp2: ${have_libngtcp2} (CFLAGS='${LIBNGTCP2_CFLAGS}' LIBS='${LIBNGTCP2_LIBS}')
libngtcp2_crypto_openssl: ${have_libngtcp2_crypto_openssl} (CFLAGS='${LIBNGTCP2_CRYPTO_OPENSSL_CFLAGS}' LIBS='${LIBNGTCP2_CRYPTO_OPENSSL_LIBS}')
libnghttp3: ${have_libnghttp3} (CFLAGS='${LIBNGHTTP3_CFLAGS}' LIBS='${LIBNGHTTP3_LIBS}')
libbpf: ${have_libbpf} (LIBS='${LIBBPF_LIBS}')
libbpf: ${have_libbpf} (CFLAGS='${LIBBPF_CFLAGS}' LIBS='${LIBBPF_LIBS}')
Libevent(SSL): ${have_libevent_openssl} (CFLAGS='${LIBEVENT_OPENSSL_CFLAGS}' LIBS='${LIBEVENT_OPENSSL_LIBS}')
Jansson: ${have_jansson} (CFLAGS='${JANSSON_CFLAGS}' LIBS='${JANSSON_LIBS}')
Jemalloc: ${have_jemalloc} (CFLAGS='${JEMALLOC_CFLAGS}' LIBS='${JEMALLOC_LIBS}')