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authorGravatar David Bremner <bremner@debian.org>2011-06-21 21:25:06 -0300
committerGravatar David Bremner <bremner@debian.org>2011-06-23 07:04:56 -0300
commitcdf1c70ab359772c1e89678e23614489596ba9eb (patch)
tree369e232328c12b3858f05532ba35be774ee995ad /lib/Makefile.local
parentde35a0e7f9efc9381652af4e381c1ac4c8a15c94 (diff)
libnotmuch: add linker script to declare only notmuch_* symbols as global.
This is closely tied to gcc and particularly gnu ld, but I guess the shared library linking code would need to be adjusted to work on a non-gnu linker anyay. I had to make a few not-obviously related changes to the lib/Makefile.local to make this work: libnotmuch_modules is defined with := and used in place of $^ (cherry picked from commit 014bf85b1c06ff49be2bde5a26433d2cf376cf70)
Diffstat (limited to 'lib/Makefile.local')
-rw-r--r--lib/Makefile.local17
1 files changed, 12 insertions, 5 deletions
diff --git a/lib/Makefile.local b/lib/Makefile.local
index 43190231..4676504c 100644
--- a/lib/Makefile.local
+++ b/lib/Makefile.local
@@ -36,7 +36,7 @@ LIBRARY_SUFFIX = so
LINKER_NAME = libnotmuch.$(LIBRARY_SUFFIX)
SONAME = $(LINKER_NAME).$(LIBNOTMUCH_VERSION_MAJOR)
LIBNAME = $(SONAME).$(LIBNOTMUCH_VERSION_MINOR).$(LIBNOTMUCH_VERSION_RELEASE)
-LIBRARY_LINK_FLAG = -shared -Wl,-soname=$(SONAME)
+LIBRARY_LINK_FLAG = -shared -Wl,--version-script=notmuch.sym,-soname=$(SONAME)
ifeq ($(LIBDIR_IN_LDCONFIG),1)
ifeq ($(DESTDIR),)
LIBRARY_INSTALL_POST_COMMAND=ldconfig
@@ -66,13 +66,20 @@ libnotmuch_cxx_srcs = \
$(dir)/query.cc \
$(dir)/thread.cc
-libnotmuch_modules = $(libnotmuch_c_srcs:.c=.o) $(libnotmuch_cxx_srcs:.cc=.o)
+libnotmuch_modules := $(libnotmuch_c_srcs:.c=.o) $(libnotmuch_cxx_srcs:.cc=.o)
$(dir)/libnotmuch.a: $(libnotmuch_modules)
$(call quiet,AR) rcs $@ $^
-$(dir)/$(LIBNAME): $(libnotmuch_modules)
- $(call quiet,CXX $(CXXFLAGS)) $^ $(FINAL_LIBNOTMUCH_LDFLAGS) $(LIBRARY_LINK_FLAG) -o $@
+$(dir)/$(LIBNAME): $(libnotmuch_modules) notmuch.sym
+ echo $(libnotmuch_modules)
+ $(call quiet,CXX $(CXXFLAGS)) $(libnotmuch_modules) $(FINAL_LIBNOTMUCH_LDFLAGS) $(LIBRARY_LINK_FLAG) -o $@
+
+notmuch.sym: lib/notmuch.h
+ gcc -aux-info notmuch.aux $<
+ printf "{\nglobal:\n" > notmuch.sym
+ sed -n 's/.*\(notmuch_[a-z_]*\) (.*/\t\1;/p' notmuch.aux >> notmuch.sym
+ printf "local: *;\n};\n" >> notmuch.sym
$(dir)/$(SONAME): $(dir)/$(LIBNAME)
ln -sf $(LIBNAME) $@
@@ -96,4 +103,4 @@ install-$(dir): $(dir)/$(LIBNAME)
$(LIBRARY_INSTALL_POST_COMMAND)
SRCS := $(SRCS) $(libnotmuch_c_srcs) $(libnotmuch_cxx_srcs)
-CLEAN := $(CLEAN) $(libnotmuch_modules) $(dir)/$(SONAME) $(dir)/$(LINKER_NAME) $(dir)$(LIBNAME) libnotmuch.a
+CLEAN := $(CLEAN) $(libnotmuch_modules) $(dir)/$(SONAME) $(dir)/$(LINKER_NAME) $(dir)$(LIBNAME) libnotmuch.a notmuch.aux notmuch.sym