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| author | Matt Turner <mattst88@gmail.com> | 2020-03-24 23:21:25 -0700 |
|---|---|---|
| committer | Matt Turner <mattst88@gmail.com> | 2020-03-24 23:21:25 -0700 |
| commit | d4c6267e4f8b28df6c98e1c6c5cb90021ce3665d (patch) | |
| tree | 7fe85ff26f1d9f713c726d1f9ce208ddaed85669 | |
| parent | 5380624471e4ac22edd397cd91289844650ef5e5 (diff) | |
Always build with -fPIC
The dladdr(3) explains that dladdr often doesn't do what you expect
because the function pointer will point to the PLT entry in the original
object and not the actual function itself.
| -rw-r--r-- | Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -19,6 +19,7 @@ # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS # IN THE SOFTWARE. +CFLAGS += -fPIC LDLIBS = -ldl LDFLAGS = -Wl,--build-id=sha1 GREP_SHA1 = egrep -o '\b[0-9a-f]{40}\b' @@ -35,7 +36,7 @@ dlopen-build-id: dlopen-test.o $(CC) $(LDFLAGS) $^ -o $@ $(LDLIBS) shared-build-id.o: build-id.c - $(CC) $(CPPFLAGS) $(CFLAGS) -fPIC -c $^ -o $@ + $(CC) $(CPPFLAGS) $(CFLAGS) -c $^ -o $@ libbuild-id.so: shared-build-id.o $(CC) $(LDFLAGS) -shared $^ -o $@ $(LDLIBS) |