| From 1b896582a0cd74854f99e08854554807a8f1f764 Mon Sep 17 00:00:00 2001 |
| From: Mike Frysinger <vapier@gentoo.org> |
| Date: Tue, 22 May 2012 14:12:23 -0400 |
| Subject: [PATCH] link against -ldl when -lltdl is not available |
| |
| If ltdl isn't found, the code will use dlopen if it's available. |
| But it won't link to -ldl which can cause link errors like so: |
| |
| CCLD opensc-tool |
| ../../src/libopensc/.libs/libopensc.so: error: undefined reference to 'dlopen' |
| ../../src/libopensc/.libs/libopensc.so: error: undefined reference to 'dlsym' |
| ../../src/libopensc/.libs/libopensc.so: error: undefined reference to 'dlerror' |
| ../../src/libopensc/.libs/libopensc.so: error: undefined reference to 'dlclose' |
| collect2: ld returned 1 exit status |
| make[3]: *** [opensc-tool] Error 1 |
| |
| Signed-off-by: Mike Frysinger <vapier@gentoo.org> |
| --- |
| configure.ac | 7 +++++++ |
| 1 files changed, 7 insertions(+), 0 deletions(-) |
| |
| diff --git a/configure.ac b/configure.ac |
| index 2751f0f..123aeb1 100644 |
| --- a/configure.ac |
| +++ b/configure.ac |
| @@ -277,6 +277,13 @@ if test -z "${LTLIB_LIBS}"; then |
| [LTLIB_LIBS="-lltdl"] |
| ) |
| fi |
| +if test -z "${LTLIB_LIBS}"; then |
| + AC_CHECK_LIB( |
| + [dl], |
| + [dlopen], |
| + [LTLIB_LIBS="-ldl"] |
| + ) |
| +fi |
| |
| saved_CFLAGS="${CFLAGS}" |
| CFLAGS="${CFLAGS} ${LTLIB_CFLAGS}" |
| -- |
| 1.7.8.6 |
| |
