This patch passes linker flags to the linker that all symbols should be
resolved at linking time. If this is not possible the linker will fail
to link.
---
 dlm_controld/Makefile | 4 ++--
 dlm_tool/Makefile     | 2 +-
 fence/Makefile        | 2 +-
 libdlm/Makefile       | 4 ++--
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/dlm_controld/Makefile b/dlm_controld/Makefile
index fbc8926c..66799807 100644
--- a/dlm_controld/Makefile
+++ b/dlm_controld/Makefile
@@ -49,9 +49,9 @@ BIN_CFLAGS += $(CFLAGS) -fPIE -DPIE
 BIN_CFLAGS += -I../include -I../libdlm
 LIB_CFLAGS += $(CFLAGS) -fPIC
 
-BIN_LDFLAGS += $(LDFLAGS) -Wl,-z,relro -pie
+BIN_LDFLAGS += $(LDFLAGS) -Wl,-z,relro -Wl,-z,defs -pie
 BIN_LDFLAGS += -lpthread -lrt -lcpg -lcmap -lcfg -lquorum -luuid
-LIB_LDFLAGS += $(LDFLAGS) -Wl,-z,relro -pie
+LIB_LDFLAGS += $(LDFLAGS) -Wl,-z,relro -Wl,-z,defs -pie
 
 PKG_CONFIG ?= pkg-config
 ifeq ($(USE_SD_NOTIFY),yes)
diff --git a/dlm_tool/Makefile b/dlm_tool/Makefile
index 80d77257..7b42638c 100644
--- a/dlm_tool/Makefile
+++ b/dlm_tool/Makefile
@@ -20,7 +20,7 @@ CFLAGS += -D_GNU_SOURCE -O2 -ggdb \
 CFLAGS += -fPIE -DPIE
 CFLAGS += -I../include -I../libdlm -I../dlm_controld
 
-LDFLAGS += -Wl,-z,relro -pie
+LDFLAGS += -Wl,-z,relro -Wl,-z,defs -pie
 LDFLAGS += -L../libdlm -L../dlm_controld
 LDFLAGS += -lpthread -ldlm -ldlmcontrol
 
diff --git a/fence/Makefile b/fence/Makefile
index 1f6dd6b2..2b080468 100644
--- a/fence/Makefile
+++ b/fence/Makefile
@@ -22,7 +22,7 @@ CFLAGS += `xml2-config --cflags`
 CFLAGS += -I../include
 CFLAGS += $(shell pkg-config --cflags pacemaker-fencing)
 
-LDFLAGS += -Wl,-z,relro -pie
+LDFLAGS += -Wl,-z,relro -Wl,-z,defs -pie
 LDFLAGS += `xml2-config --libs`
 LDFLAGS += -ldl
 
diff --git a/libdlm/Makefile b/libdlm/Makefile
index ab327619..313c2a08 100644
--- a/libdlm/Makefile
+++ b/libdlm/Makefile
@@ -84,8 +84,8 @@ CFLAGS += -D_GNU_SOURCE -O2 -ggdb \
 LIB_CFLAGS += $(CFLAGS) -D_REENTRANT
 LLT_CFLAGS += $(CFLAGS)
 
-LIB_LDFLAGS += $(LDFLAGS) -lpthread
-LLT_LDFLAGS += $(LDFLAGS)
+LIB_LDFLAGS += $(LDFLAGS) -lpthread -Wl,-z,defs
+LLT_LDFLAGS += $(LDFLAGS) -Wl,-z,defs
 
 all: $(LIB_TARGET) $(LLT_TARGET) $(LIB_PC) $(LLT_PC)
 
-- 
2.27.0

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