configure: Test for flag to set rpath

This is better than the previous approach which had a hardcoded Linux-specific
value in the Makefile.

2 files changed, 13 insertions, 3 deletions

diff --git a/Makefile.local b/Makefile.local
index 971ddd52..cbc0e077 100644
--- a/Makefile.local
+++ b/Makefile.local
@@ -37,10 +37,8 @@ ifneq ($(LINKER_RESOLVES_LIBRARY_DEPENDENCIES),1)
 FINAL_NOTMUCH_LDFLAGS += $(CONFIGURE_LDFLAGS)
 FINAL_NOTMUCH_LINKER = CXX
 endif
-ifeq ($(PLATFORM),LINUX)
 ifeq ($(LIBDIR_IN_LDCONFIG),0)
-FINAL_NOTMUCH_LDFLAGS += -Wl,--enable-new-dtags -Wl,-rpath,$(libdir)
-endif
+FINAL_NOTMUCH_LDFLAGS += $(RPATH_LDFLAGS)
 endif
 FINAL_LIBNOTMUCH_LDFLAGS = $(LDFLAGS) $(CONFIGURE_LDFLAGS)
 
diff --git a/configure b/configure
index c5bcd071..6f0bfeac 100755
--- a/configure
+++ b/configure
@@ -393,6 +393,15 @@ rm -f compat/have_strcasestr
 
 printf "int main(void){return 0;}\n" > minimal.c
 
+printf "Checking for rpath support... "
+if ${CC} -Wl,--enable-new-dtags -Wl,-rpath,/tmp/ -o minimal minimal.c >/dev/null 2>&1
+then
+    printf "Yes.\n"
+    rpath_ldflags="-Wl,--enable-new-dtags -Wl,-rpath,\$(libdir)"
+else
+    printf "No (nothing to worry about).\n"
+fi
+
 WARN_CXXFLAGS=""
 printf "Checking for available C++ compiler warning flags... "
 for flag in -Wall -Wextra -Wwrite-strings -Wswitch-enum; do
@@ -523,6 +532,9 @@ GMIME_LDFLAGS = ${gmime_ldflags}
 TALLOC_CFLAGS = ${talloc_cflags}
 TALLOC_LDFLAGS = ${talloc_ldflags}
 
+# Flags needed to have linker set rpath attribute
+RPATH_LDFLAGS = ${rpath_ldflags}
+
 # Whether valgrind header files are available
 HAVE_VALGRIND = ${have_valgrind}