[Mageia-dev] %ldflags, a shared library (xchat-plugin)

Mon Nov 28 05:42:31 CET 2011

Hello!
+
+I am working with drakcowsay and I want to fix the warning:
+*** WARNING: No build ID note found in 
+(...)/drakcowsay/BUILDROOT/drakcowsay-0.7-7.mga1.x86_64/usr/lib64/xchat/plugins/xchat-drakcowsay.so
+
+This page http://xchat.org/docs/plugin20.html#intro says:
+Most UNIX systems:
+     gcc -Wl,--export-dynamic -Wall -O1 -shared -fPIC myplugin.c -o 
+myplugin.so
+In our .spec we have:
+     gcc -Wl,--export-dynamic -Wall -O1 -shared -fPIC -I. 
+xchat-%{name}.c -o xchat-%{name}.so
+
+When I try to add %ldflags to it, it gives an error:
+/tmp/cc5a8dDh.o: In function `drakcowsay_timeout_cb':
+xchat-drakcowsay.c:(.text+0x60): undefined reference to `xchat_commandf'
+xchat-drakcowsay.c:(.text+0xcd): undefined reference to `xchat_commandf'
+/tmp/cc5a8dDh.o: In function `xchat_plugin_init':
+xchat-drakcowsay.c:(.text+0x1ed): undefined reference to `xchat_hook_timer'
+xchat-drakcowsay.c:(.text+0x200): undefined reference to `xchat_print'
+/tmp/cc5a8dDh.o: In function `xchat_plugin_deinit':
+xchat-drakcowsay.c:(.text+0x24c): undefined reference to `xchat_print'
+collect2: ld returned 1 exit status
+
+So I've extracted the parameters for gcc from %ldflags and removed 
+-Wl,--no-undefined.
+The current line is:
+      gcc -Wl,--as-needed -Wl,--no-undefined -Wl,-z,relro -Wl,-O1 
+-Wl,--build-id -Wl,--enable-new-dtags -Wl,--export-dynamic -Wall -O1 
+-shared -fPIC -I. xchat-drakcowsay.c -o xchat-drakcowsay.so
+
+Is it right (for a shared library/ plugin)?
+