Add a shared library for LLVM, named libLLVM2.7svn.(so|dylib), and add an
--enable-shared configure flag to have the tools linked shared. (2.7svn is just
$(LLVMVersion) so it'll change to "2.7" in the release.) Always link the
example programs shared to test that the shared library keeps working.
On my mac laptop, Debug libLLVM2.7svn.dylib is 39MB, and opt (for example) is
16M static vs 440K shared.
Two things are less than ideal here:
1) The library doesn't include any version information. Since we expect to break
the ABI with every release, this shouldn't be much of a problem. If we do
release a compatible 2.7.1, we may be able to hack its library to work with
binaries compiled against 2.7.0, or we can just ask them to recompile. I'm
hoping to get a real packaging expert to look at this for the 2.8 release.
2) llvm-config doesn't yet have an option to print link options for the shared
library. I'll add this as a subsequent patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96559 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/configure b/configure
index 88050f3..719c1b7 100755
--- a/configure
+++ b/configure
@@ -689,6 +689,7 @@
ENABLE_DOXYGEN
ENABLE_THREADS
ENABLE_PIC
+ENABLE_SHARED
TARGETS_TO_BUILD
LLVM_ENUM_TARGETS
LLVM_ENUM_ASM_PRINTERS
@@ -769,6 +770,7 @@
LLVMGCC_MAJVERS
LLVMGCC_LANGS
SHLIBEXT
+SHLIBPATH_VAR
LLVM_PREFIX
LLVM_BINDIR
LLVM_LIBDIR
@@ -1401,6 +1403,7 @@
--enable-threads Use threads if available (default is YES)
--enable-pic Build LLVM with Position Independent Code (default
is YES)
+ --enable-shared Link LLVM tools shared (default is NO)
--enable-targets Build specific host targets: all or
target1,target2,... Valid targets are: host, x86,
x86_64, sparc, powerpc, alpha, arm, mips, spu,
@@ -4857,6 +4860,25 @@
_ACEOF
+# Check whether --enable-shared was given.
+if test "${enable_shared+set}" = set; then
+ enableval=$enable_shared;
+else
+ enableval=default
+fi
+
+case "$enableval" in
+ yes) ENABLE_SHARED=1
+ ;;
+ no) ENABLE_SHARED=0
+ ;;
+ default) ENABLE_SHARED=0
+ ;;
+ *) { { echo "$as_me:$LINENO: error: Invalid setting for --enable-shared. Use \"yes\" or \"no\"" >&5
+echo "$as_me: error: Invalid setting for --enable-shared. Use \"yes\" or \"no\"" >&2;}
+ { (exit 1); exit 1; }; } ;;
+esac
+
TARGETS_TO_BUILD=""
# Check whether --enable-targets was given.
if test "${enable_targets+set}" = set; then
@@ -11035,7 +11057,7 @@
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<EOF
-#line 11038 "configure"
+#line 11060 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -19595,6 +19617,9 @@
SHLIBEXT=$libltdl_cv_shlibext
+SHLIBPATH_VAR=$libltdl_cv_shlibpath_var
+
+
# Translate the various configuration directories and other basic
# information into substitutions that will end up in Makefile.config.in
# that these configured values can be used by the makefiles
@@ -20652,6 +20677,7 @@
ENABLE_DOXYGEN!$ENABLE_DOXYGEN$ac_delim
ENABLE_THREADS!$ENABLE_THREADS$ac_delim
ENABLE_PIC!$ENABLE_PIC$ac_delim
+ENABLE_SHARED!$ENABLE_SHARED$ac_delim
TARGETS_TO_BUILD!$TARGETS_TO_BUILD$ac_delim
LLVM_ENUM_TARGETS!$LLVM_ENUM_TARGETS$ac_delim
LLVM_ENUM_ASM_PRINTERS!$LLVM_ENUM_ASM_PRINTERS$ac_delim
@@ -20661,7 +20687,6 @@
OPTIMIZE_OPTION!$OPTIMIZE_OPTION$ac_delim
EXTRA_OPTIONS!$EXTRA_OPTIONS$ac_delim
BINUTILS_INCDIR!$BINUTILS_INCDIR$ac_delim
-ENABLE_LLVMC_DYNAMIC!$ENABLE_LLVMC_DYNAMIC$ac_delim
_ACEOF
if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 97; then
@@ -20703,6 +20728,7 @@
ac_delim='%!_!# '
for ac_last_try in false false false false false :; do
cat >conf$$subs.sed <<_ACEOF
+ENABLE_LLVMC_DYNAMIC!$ENABLE_LLVMC_DYNAMIC$ac_delim
ENABLE_LLVMC_DYNAMIC_PLUGINS!$ENABLE_LLVMC_DYNAMIC_PLUGINS$ac_delim
CXX!$CXX$ac_delim
CXXFLAGS!$CXXFLAGS$ac_delim
@@ -20773,6 +20799,7 @@
LLVMGCC_MAJVERS!$LLVMGCC_MAJVERS$ac_delim
LLVMGCC_LANGS!$LLVMGCC_LANGS$ac_delim
SHLIBEXT!$SHLIBEXT$ac_delim
+SHLIBPATH_VAR!$SHLIBPATH_VAR$ac_delim
LLVM_PREFIX!$LLVM_PREFIX$ac_delim
LLVM_BINDIR!$LLVM_BINDIR$ac_delim
LLVM_LIBDIR!$LLVM_LIBDIR$ac_delim
@@ -20793,7 +20820,7 @@
LTLIBOBJS!$LTLIBOBJS$ac_delim
_ACEOF
- if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 88; then
+ if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 90; then
break
elif $ac_last_try; then
{ { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5