build: Add support for building dylibs.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@163412 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile b/Makefile
index 642b654..a96c692 100644
--- a/Makefile
+++ b/Makefile
@@ -117,7 +117,7 @@
$(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name))
# Top-Level Platform Target
-$(Tmp.Name):: $(Tmp.Configs:%=$(Tmp.ObjPath)/%/libcompiler_rt.a)
+$(Tmp.Name):: $(Tmp.Configs:%=$(Tmp.Name)-%)
.PHONY: $(Tmp.Name)
clean::
@@ -131,6 +131,13 @@
define PerPlatformConfig_template
$(call Set,Tmp.Config,$(1))
$(call Set,Tmp.ObjPath,$(ProjObjRoot)/$(Tmp.Name)/$(Tmp.Config))
+$(call Set,Tmp.SHARED_LIBRARY,$(strip \
+ $(call GetCNAVar,SHARED_LIBRARY,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
+
+# Compute the library suffix.
+$(if $(call streq,1,$(Tmp.SHARED_LIBRARY)),
+ $(call Set,Tmp.LibrarySuffix,dylib),
+ $(call Set,Tmp.LibrarySuffix,a))
# Compute the archs to build, depending on whether this is a universal build or
# not.
@@ -142,8 +149,8 @@
$(call VarOrDefault,$(Tmp.Key).Arch.$(Tmp.Config),$($(Tmp.Key).Arch))))
# Copy or lipo to create the per-config library.
-$(call Set,Tmp.Inputs,$(Tmp.ArchsToBuild:%=$(Tmp.ObjPath)/%/libcompiler_rt.a))
-$(Tmp.ObjPath)/libcompiler_rt.a: $(Tmp.Inputs) $(Tmp.ObjPath)/.dir
+$(call Set,Tmp.Inputs,$(Tmp.ArchsToBuild:%=$(Tmp.ObjPath)/%/libcompiler_rt.$(Tmp.LibrarySuffix)))
+$(Tmp.ObjPath)/libcompiler_rt.$(Tmp.LibrarySuffix): $(Tmp.Inputs) $(Tmp.ObjPath)/.dir
$(Summary) " FINAL-ARCHIVE: $(Tmp.Name)/$(Tmp.Config): $$@"
-$(Verb) $(RM) $$@
$(if $(call streq,1,$(words $(Tmp.ArchsToBuild))), \
@@ -152,7 +159,7 @@
.PRECIOUS: $(Tmp.ObjPath)/.dir
# Per-Config Targets
-$(Tmp.Name)-$(Tmp.Config):: $(Tmp.ObjPath)/libcompiler_rt.a
+$(Tmp.Name)-$(Tmp.Config):: $(Tmp.ObjPath)/libcompiler_rt.$(Tmp.LibrarySuffix)
.PHONY: $(Tmp.Name)-$(Tmp.Config)
# Per-Config-Arch Libraries
@@ -172,10 +179,21 @@
$(call GetCNAVar,AR,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.ARFLAGS,$(strip \
$(call GetCNAVar,ARFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
+$(call Set,Tmp.CC,$(strip \
+ $(call GetCNAVar,CC,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
+$(call Set,Tmp.LDFLAGS,$(strip \
+ $(call GetCNAVar,LDFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.RANLIB,$(strip \
$(call GetCNAVar,RANLIB,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
$(call Set,Tmp.RANLIBFLAGS,$(strip \
$(call GetCNAVar,RANLIBFLAGS,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
+$(call Set,Tmp.SHARED_LIBRARY,$(strip \
+ $(call GetCNAVar,SHARED_LIBRARY,$(Tmp.Key),$(Tmp.Config),$(Tmp.Arch))))
+
+# Compute the library suffix.
+$(if $(call streq,1,$(Tmp.SHARED_LIBRARY)),
+ $(call Set,Tmp.LibrarySuffix,dylib),
+ $(call Set,Tmp.LibrarySuffix,a))
# Compute the object inputs for this library.
$(call Set,Tmp.Inputs,\
@@ -188,10 +206,14 @@
-$(Verb) $(RM) $$@
$(Verb) $(Tmp.AR) $(Tmp.ARFLAGS) $$@ $(Tmp.Inputs)
$(Verb) $(Tmp.RANLIB) $(Tmp.RANLIBFLAGS) $$@
+$(Tmp.ObjPath)/libcompiler_rt.dylib: $(Tmp.Inputs) $(Tmp.ObjPath)/.dir
+ $(Summary) " DYLIB: $(Tmp.Name)/$(Tmp.Config)/$(Tmp.Arch): $$@"
+ $(Verb) $(Tmp.CC) -arch $(Tmp.Arch) -dynamiclib -o $$@ \
+ $(Tmp.Inputs) $(Tmp.LDFLAGS)
.PRECIOUS: $(Tmp.ObjPath)/.dir
# Per-Config-Arch Targets
-$(Tmp.Name)-$(Tmp.Config)-$(Tmp.Arch):: $(Tmp.ObjPath)/libcompiler_rt.a
+$(Tmp.Name)-$(Tmp.Config)-$(Tmp.Arch):: $(Tmp.ObjPath)/libcompiler_rt.$(Tmp.LibrarySuffix)
.PHONY: $(Tmp.Name)-$(Tmp.Config)-$(Tmp.Arch)
# Per-Config-Arch-SubDir Objects
diff --git a/make/lib_info.mk b/make/lib_info.mk
index 2e85f64..81f9695 100644
--- a/make/lib_info.mk
+++ b/make/lib_info.mk
@@ -53,8 +53,7 @@
# The names of all the available options.
AvailableOptions := AR ARFLAGS \
- CC CFLAGS FUNCTIONS OPTIMIZED \
+ CC CFLAGS LDFLAGS FUNCTIONS OPTIMIZED \
RANLIB RANLIBFLAGS \
- VISIBILITY_HIDDEN \
- KERNEL_USE \
- STRIP LIPO
+ VISIBILITY_HIDDEN KERNEL_USE \
+ SHARED_LIBRARY STRIP LIPO
diff --git a/make/options.mk b/make/options.mk
index f695fc8..d943e00 100644
--- a/make/options.mk
+++ b/make/options.mk
@@ -23,11 +23,20 @@
# default.
VISIBILITY_HIDDEN := 0
+# Whether the library is being built for kernel use.
+KERNEL_USE := 0
+
+# Whether the library should be built as a shared object.
+SHARED_LIBRARY := 0
+
# Miscellaneous tools.
AR := ar
# FIXME: Remove these pipes once ranlib errors are fixed.
ARFLAGS := cru 2> /dev/null
+
+LDFLAGS :=
+
RANLIB := ranlib
# FIXME: Remove these pipes once ranlib errors are fixed.
RANLIBFLAGS := 2> /dev/null
