configure: Implement --enable-host-pie

[thirdparty/gcc.git] / gcc / Makefile.in

diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 5ad638f59d81a3beaa14c3ffcac9647a5b478abd..5a78c7476d2813027ac3eedb098280ac304d3219 100644 (file)
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -158,6 +158,9 @@ LDFLAGS = @LDFLAGS@
 # Should we build position-independent host code?
 PICFLAG = @PICFLAG@
 
+# The linker flag for the above.
+LD_PICFLAG = @LD_PICFLAG@
+
 # Flags to determine code coverage. When coverage is disabled, this will
 # contain the optimization flags, as you normally want code coverage
 # without optimization.
@@ -266,18 +269,17 @@ LINKER = $(CC)
 LINKER_FLAGS = $(CFLAGS)
 endif
 
+enable_host_pie = @enable_host_pie@
+
 # Enable Intel CET on Intel CET enabled host if needed.
 CET_HOST_FLAGS = @CET_HOST_FLAGS@
 COMPILER += $(CET_HOST_FLAGS)
 
-NO_PIE_CFLAGS = @NO_PIE_CFLAGS@
-NO_PIE_FLAG = @NO_PIE_FLAG@
-
-# We don't want to compile the compilers with -fPIE, it make PCH fail.
-COMPILER += $(NO_PIE_CFLAGS)
+# Maybe compile the compilers with -fPIE or -fPIC.
+COMPILER += $(PICFLAG)
 
-# Link with -no-pie since we compile the compiler with -fno-PIE.
-LINKER += $(NO_PIE_FLAG)
+# Link with -pie, or -no-pie, depending on the above.
+LINKER += $(LD_PICFLAG)
 
 # Like LINKER, but use a mutex for serializing front end links.
 ifeq (@DO_LINK_MUTEX@,true)
@@ -1060,18 +1062,21 @@ ALL_CPPFLAGS = $(INCLUDES) $(CPPFLAGS)
 ALL_COMPILERFLAGS = $(ALL_CXXFLAGS)
 
 # This is the variable to use when using $(LINKER).
-ALL_LINKERFLAGS = $(ALL_CXXFLAGS)
+ALL_LINKERFLAGS = $(ALL_CXXFLAGS) $(LD_PICFLAG)
 
 # Build and host support libraries.
 
-# Use the "pic" build of libiberty if --enable-host-shared, unless we are
-# building for mingw.
+# Use the "pic" build of libiberty if --enable-host-shared or --enable-host-pie,
+# unless we are building for mingw.
 LIBIBERTY_PICDIR=$(if $(findstring mingw,$(target)),,pic)
-ifeq ($(enable_host_shared),yes)
+ifneq ($(enable_host_shared)$(enable_host_pie),)
 LIBIBERTY = ../libiberty/$(LIBIBERTY_PICDIR)/libiberty.a
-BUILD_LIBIBERTY = $(build_libobjdir)/libiberty/$(LIBIBERTY_PICDIR)/libiberty.a
 else
 LIBIBERTY = ../libiberty/libiberty.a
+endif
+ifeq ($(enable_host_shared),yes)
+BUILD_LIBIBERTY = $(build_libobjdir)/libiberty/$(LIBIBERTY_PICDIR)/libiberty.a
+else
 BUILD_LIBIBERTY = $(build_libobjdir)/libiberty/libiberty.a
 endif