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openwrt/package/libs/libpcap/patches/100-debian_shared_lib.patch
Hauke Mehrtens 96ee7c8bfd libpcap: Update shared-lib patch from Debian to fix linking problems 
This updates the shared-lib patch to the recent version from debian
found here:
https://salsa.debian.org/rfrancoise/libpcap/-/blob/debian/1.9.1-2/debian/patches/shared-lib.diff

This patch makes it include missing/strlcpy.o to the shared library
which is needed for OpenWrt glibc builds, otherwise there is an
undefined symbol and tcpdump and other builds are failing.

Fixes: 44f11353de ("libpcap: update to 1.9.1")
Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com>
2020-03-29 18:50:46 +02:00

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Debian-specific modifications to the upstream Makefile.in to
build a shared library.
--- a/Makefile.in
+++ b/Makefile.in
@@ -40,6 +40,14 @@ mandir = @mandir@
srcdir = @srcdir@
VPATH = @srcdir@
+# some defines for shared library compilation
+MAJ=0.8
+LIBVERSION=$(shell head -1 debian/changelog | perl -nle 'm/\S+\s+\((\S+)-\S+\)/ and print $$1')
+LIBNAME=pcap
+LIBRARY=lib$(LIBNAME).a
+SOLIBRARY=lib$(LIBNAME).so
+SHAREDLIB=$(SOLIBRARY).$(LIBVERSION)
+
#
# You shouldn't need to edit anything below.
#
@@ -69,7 +77,8 @@ INSTALL_RPCAPD=@INSTALL_RPCAPD@
EXTRA_NETWORK_LIBS=@EXTRA_NETWORK_LIBS@
# Standard CFLAGS for building members of a shared library
-FULL_CFLAGS = $(CCOPT) @V_LIB_CCOPT_FAT@ $(SHLIB_CCOPT) $(INCLS) $(DEFS) $(CFLAGS)
+FULL_CFLAGS = $(CCOPT) @V_LIB_CCOPT_FAT@ $(SHLIB_CCOPT) $(INCLS) $(DEFS) $(CFLAGS) $(CPPFLAGS)
+CFLAGS_SHARED = -shared -Wl,-soname,$(SOLIBRARY).$(MAJ) -Wl,--version-script=libpcap-symbols.lds
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
@@ -84,7 +93,11 @@ YACC = @YACC@
# problem if you don't own the file but can write to the directory.
.c.o:
@rm -f $@
- $(CC) $(FULL_CFLAGS) -c $(srcdir)/$*.c
+ $(CC) $(FULL_CFLAGS) -c -o $@ $(srcdir)/$*.c
+
+%_pic.o: %.c
+ @rm -f $@
+ $(CC) -fPIC $(FULL_CFLAGS) -c -o $@ $(srcdir)/$*.c
PSRC = pcap-@V_PCAP@.c @USB_SRC@ @BT_SRC@ @BT_MONITOR_SRC@ @NETFILTER_SRC@ @DBUS_SRC@ @NETMAP_SRC@ @RDMA_SRC@
FSRC = @V_FINDALLDEVS@
@@ -101,6 +114,7 @@ SRC = $(PSRC) $(FSRC) $(CSRC) $(SSRC) $(
# We would like to say "OBJ = $(SRC:.c=.o)" but Ultrix's make cannot
# hack the extra indirection
OBJ = $(PSRC:.c=.o) $(FSRC:.c=.o) $(CSRC:.c=.o) $(SSRC:.c=.o) $(GENSRC:.c=.o) $(LIBOBJS)
+OBJ_PIC = $(PSRC:.c=_pic.o) $(FSRC:.c=_pic.o) $(CSRC:.c=_pic.o) $(SSRC:.c=_pic.o) $(GENSRC:.c=_pic.o) $(LIBOBJS:.o=_pic.o)
PUBHDR = \
pcap.h \
pcap-bpf.h \
@@ -155,7 +169,7 @@ TAGFILES = \
CLEANFILES = $(OBJ) libpcap.a libpcap.so.`cat $(srcdir)/VERSION` \
$(PROG)-`cat $(srcdir)/VERSION`.tar.gz $(GENSRC) $(GENHDR) \
- lex.yy.c pcap-config libpcap.pc
+ lex.yy.c pcap-config libpcap.pc $(OBJ_PIC)
MAN1 = pcap-config.1
@@ -392,7 +406,7 @@ libpcap.a: $(OBJ)
$(AR) rc $@ $(OBJ) $(ADDLARCHIVEOBJS)
$(RANLIB) $@
-shared: libpcap.$(DYEXT)
+shared: $(SHAREDLIB)
libpcap.so: $(OBJ)
@rm -f $@
@@ -468,6 +482,13 @@ libpcap.shareda: $(OBJ)
#
libpcap.none:
+$(SHAREDLIB): $(OBJ_PIC)
+ -@rm -f $@
+ -@rm -f $(SOLIBRARY) $(SOLIBRARY).$(MAJ)
+ $(CC) $(CFLAGS_SHARED) $(LDFLAGS) -o $(SHAREDLIB) $(OBJ_PIC) -lc $(LIBS)
+ ln -s $(SHAREDLIB) $(SOLIBRARY).$(MAJ)
+ ln -s $(SOLIBRARY).$(MAJ) $(SOLIBRARY)
+
scanner.c: $(srcdir)/scanner.l
$(LEX) -P pcap_ --header-file=scanner.h --nounput -o scanner.c $<
scanner.h: scanner.c
@@ -480,6 +501,9 @@ scanner.h: scanner.c
scanner.o: scanner.c grammar.h
$(CC) $(FULL_CFLAGS) -c scanner.c
+scanner_pic.o: scanner.c grammar.h
+ $(CC) -fPIC $(FULL_CFLAGS) -o $@ -c scanner.c
+
grammar.c: $(srcdir)/grammar.y
$(YACC) -p pcap_ -o grammar.c -d $<
grammar.h: grammar.c
@@ -492,6 +516,10 @@ grammar.h: grammar.c
grammar.o: grammar.c scanner.h
$(CC) $(FULL_CFLAGS) -c grammar.c
+grammar_pic.o: grammar.c
+ @rm -f $@
+ $(CC) -fPIC $(FULL_CFLAGS) -o $@ -c grammar.c
+
gencode.o: $(srcdir)/gencode.c grammar.h scanner.h
$(CC) $(FULL_CFLAGS) -c $(srcdir)/gencode.c
@@ -504,9 +532,17 @@ snprintf.o: $(srcdir)/missing/snprintf.c
strlcat.o: $(srcdir)/missing/strlcat.c
$(CC) $(FULL_CFLAGS) -o $@ -c $(srcdir)/missing/strlcat.c
+strlcat_pic.o: $(srcdir)/missing/strlcat.c
+ @rm -f $@
+ $(CC) -fPIC $(FULL_CFLAGS) -o $@ -c $(srcdir)/missing/strlcat.c
+
strlcpy.o: $(srcdir)/missing/strlcpy.c
$(CC) $(FULL_CFLAGS) -o $@ -c $(srcdir)/missing/strlcpy.c
+strlcpy_pic.o: $(srcdir)/missing/strlcpy.c
+ @rm -f $@
+ $(CC) -fPIC $(FULL_CFLAGS) -o $@ -c $(srcdir)/missing/strlcpy.c
+
strtok_r.o: $(srcdir)/missing/strtok_r.c
$(CC) $(FULL_CFLAGS) -o $@ -c $(srcdir)/missing/strtok_r.c
@@ -539,6 +575,9 @@ pcap-config: $(srcdir)/pcap-config.in ./
mv $@.tmp $@
chmod a+x $@
+bpf_filter_pic.o: bpf_filter.c
+ $(CC) -fPIC $(FULL_CFLAGS) -c bpf_filter.c -o $@
+
#
# Remote pcap daemon.
#
@@ -635,11 +674,9 @@ install-shared: install-shared-$(DYEXT)
install-shared-so: libpcap.so
[ -d $(DESTDIR)$(libdir) ] || \
(mkdir -p $(DESTDIR)$(libdir); chmod 755 $(DESTDIR)$(libdir))
- VER=`cat $(srcdir)/VERSION`; \
- MAJOR_VER=`sed 's/\([0-9][0-9]*\)\..*/\1/' $(srcdir)/VERSION`; \
- $(INSTALL_PROGRAM) libpcap.so.$$VER $(DESTDIR)$(libdir)/libpcap.so.$$VER; \
- ln -sf libpcap.so.$$VER $(DESTDIR)$(libdir)/libpcap.so.$$MAJOR_VER; \
- ln -sf libpcap.so.$$MAJOR_VER $(DESTDIR)$(libdir)/libpcap.so
+ $(INSTALL_DATA) $(SHAREDLIB) $(DESTDIR)$(libdir)/
+ ln -sf $(SHAREDLIB) $(DESTDIR)$(libdir)/$(SOLIBRARY).$(MAJ)
+ ln -sf $(SOLIBRARY).$(MAJ) $(DESTDIR)$(libdir)/$(SOLIBRARY)
install-shared-dylib: libpcap.dylib
[ -d $(DESTDIR)$(libdir) ] || \
(mkdir -p $(DESTDIR)$(libdir); chmod 755 $(DESTDIR)$(libdir))
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -507,7 +507,7 @@ AC_DEFUN(AC_LBL_SHLIBS_INIT,
esac
;;
esac
- V_SHLIB_CCOPT="$V_SHLIB_CCOPT $PIC_OPT"
+ V_SHLIB_CCOPT="$V_SHLIB_CCOPT"
V_SONAME_OPT="-Wl,-soname,"
V_RPATH_OPT="-Wl,-rpath,"
;;
@@ -570,7 +570,7 @@ AC_DEFUN(AC_LBL_SHLIBS_INIT,
#
# "cc" is GCC.
#
- V_SHLIB_CCOPT="$V_SHLIB_CCOPT -fpic"
+ V_SHLIB_CCOPT="$V_SHLIB_CCOPT"
V_SHLIB_CMD="\$(CC)"
V_SHLIB_OPT="-shared"
V_SONAME_OPT="-Wl,-soname,"
--- /dev/null
+++ b/libpcap-symbols.lds
@@ -0,0 +1,106 @@
+{
+ global:
+ bpf_dump;
+ bpf_filter;
+ bpf_image;
+ bpf_validate;
+ eproto_db;
+ pcap_breakloop;
+ pcap_can_set_rfmon;
+ pcap_close;
+ pcap_compile;
+ pcap_compile_nopcap;
+ pcap_datalink;
+ pcap_datalink_name_to_val;
+ pcap_datalink_val_to_description;
+ pcap_datalink_val_to_name;
+ pcap_dispatch;
+ pcap_dump;
+ pcap_dump_close;
+ pcap_dump_file;
+ pcap_dump_flush;
+ pcap_dump_fopen;
+ pcap_dump_ftell;
+ pcap_dump_open;
+ pcap_ether_aton;
+ pcap_ether_hostton;
+ pcap_file;
+ pcap_fileno;
+ pcap_findalldevs;
+ pcap_fopen_offline;
+ pcap_freealldevs;
+ pcap_freecode;
+ pcap_get_selectable_fd;
+ pcap_geterr;
+ pcap_getnonblock;
+ pcap_inject;
+ pcap_is_swapped;
+ pcap_lib_version;
+ pcap_list_datalinks;
+ pcap_lookupdev;
+ pcap_lookupnet;
+ pcap_loop;
+ pcap_major_version;
+ pcap_minor_version;
+ pcap_nametoaddr;
+ pcap_nametoaddrinfo;
+ pcap_nametoeproto;
+ pcap_nametollc;
+ pcap_nametonetaddr;
+ pcap_nametoport;
+ pcap_nametoportrange;
+ pcap_nametoproto;
+ pcap_next;
+ pcap_next_etherent;
+ pcap_next_ex;
+ pcap_open_dead;
+ pcap_open_live;
+ pcap_open_offline;
+ pcap_perror;
+ pcap_sendpacket;
+ pcap_set_datalink;
+ pcap_setdirection;
+ pcap_setfilter;
+ pcap_setnonblock;
+ pcap_snapshot;
+ pcap_stats;
+ pcap_statustostr;
+ pcap_strerror;
+ pcap_version;
+ /* introduced in pcap 1.0 */
+ pcap_activate;
+ pcap_create;
+ pcap_datalink_ext;
+ pcap_free_datalinks;
+ pcap_offline_filter;
+ pcap_set_buffer_size;
+ pcap_set_promisc;
+ pcap_set_rfmon;
+ pcap_set_snaplen;
+ pcap_set_timeout;
+ /* introduced in pcap 1.2 */
+ pcap_set_tstamp_type;
+ pcap_list_tstamp_types;
+ pcap_free_tstamp_types;
+ pcap_tstamp_type_name_to_val;
+ pcap_tstamp_type_val_to_name;
+ pcap_tstamp_type_val_to_description;
+ /* introduced in pcap 1.5 */
+ pcap_set_immediate_mode;
+ pcap_set_tstamp_precision;
+ pcap_get_tstamp_precision;
+ pcap_open_dead_with_tstamp_precision;
+ pcap_open_offline_with_tstamp_precision;
+ pcap_fopen_offline_with_tstamp_precision;
+ /* introduced in pcap 1.7 */
+ pcap_dump_open_append;
+ /* introduced in pcap 1.9.0 */
+ pcap_bufsize;
+ pcap_dump_ftell64;
+ pcap_get_required_select_timeout;
+ pcap_set_protocol_linux; /* linux-only */
+ /* introduced in pcap 1.9.1 */
+ pcap_datalink_val_to_description_or_dlt;
+ local:
+ *;
+};
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