We would like to use LLVM to compile apache 2.2.19. In the compilation process, we want to add a custom pass to clang by specifying the CFLAGS environment variable:
CFLAGS="-Xclang -load -Xclang mypass.so"
Then, at the linking step, we also want the executable to be linked with one custom dynamic library. So we exported these two environment variables:
LDFLAGS="-L. -lmylib"
LD_LIBRARY_PATH='./libfolder'
We've used these environment variables when compiling MySQL, and it worked as expected. However, for compiling apache, we encountered the following error:
/usr/bin/ld: cannot find -load
It seems that the the linker also reads compiler flags and then interpreted -load as a library... Could you please tell me how I can get rid of this issue?
Below are more details:
Here is the command I used to configure apache:
CC=clang CXX=clang++
CFLAGS="-Xclang -load -Xclang /home/my/software/llvm-build/Debug+Asserts/lib/mypass.so"
CXXFLAGS="-Xclang -load -Xclang /home/my/software/llvm-build/Debug+Asserts/lib/mypass.so"
LDFLAGS="-ldl -L/home/my/Projects/lib/ -lmylib"
LD_LIBRARY_PATH="/home/my/Projects/lib/"
./configure
The error after I ran make is here:
/bin/bash /home/my/Downloads/httpd-2.2.19/srclib/apr/libtool --silent --mode=link
clang -Xclang -load -Xclang /home/my/software/llvm-build/Debug+Asserts/lib/mypass.so
-DHAVE_CONFIG_H -D_REENTRANT -D_GNU_SOURCE -D_LARGEFILE64_SOURCE
-I./include -I/home/my/Downloads/httpd-2.2.19/srclib/apr/include/arch/unix
-I./include/arch/unix -I/home/my/Downloads/httpd-2.2.19/srclib/apr/include/arch/unix
-I/home/my/Downloads/httpd-2.2.19/srclib/apr/include -version-info 4:5:4 --verbose -ldl
-L/home/my/Projects/lib/ -lmylib-o libapr-1.la
-rpath /usr/local/apache2/lib passwd/apr_getpass.lo strings/apr_cpystrn.lo
strings/apr_fnmatch.lo strings/apr_snprintf.lo strings/apr_strings.lo
strings/apr_strnatcmp.lo strings/apr_strtok.lo tables/apr_hash.lo
tables/apr_tables.lo atomic/unix/builtins.lo atomic/unix/ia32.lo
atomic/unix/mutex.lo atomic/unix/ppc.lo atomic/unix/s390.lo
atomic/unix/solaris.lo dso/unix/dso.lo file_io/unix/buffer.lo
file_io/unix/copy.lo file_io/unix/dir.lo file_io/unix/fileacc.lo file_io/unix/filedup.lo
file_io/unix/filepath.lo file_io/unix/filepath_util.lo file_io/unix/filestat.lo
file_io/unix/flock.lo file_io/unix/fullrw.lo file_io/unix/mktemp.lo file_io/unix/open.lo
file_io/unix/pipe.lo file_io/unix/readwrite.lo file_io/unix/seek.lo
file_io/unix/tempdir.lo locks/unix/global_mutex.lo locks/unix/proc_mutex.lo
locks/unix/thread_cond.lo locks/unix/thread_mutex.lo locks/unix/thread_rwlock.lo
memory/unix/apr_pools.lo misc/unix/charset.lo misc/unix/env.lo misc/unix/errorcodes.lo
misc/unix/getopt.lo misc/unix/otherchild.lo misc/unix/rand.lo misc/unix/start.lo
misc/unix/version.lo mmap/unix/common.lo mmap/unix/mmap.lo network_io/unix/inet_ntop.lo
network_io/unix/inet_pton.lo network_io/unix/multicast.lo network_io/unix/sendrecv.lo
network_io/unix/sockaddr.lo network_io/unix/socket_util.lo network_io/unix/sockets.lo
network_io/unix/sockopt.lo poll/unix/epoll.lo poll/unix/kqueue.lo poll/unix/poll.lo
poll/unix/pollcb.lo poll/unix/pollset.lo poll/unix/port.lo poll/unix/select.lo
random/unix/apr_random.lo random/unix/sha2.lo random/unix/sha2_glue.lo shmem/unix/shm.lo
support/unix/waitio.lo threadproc/unix/proc.lo threadproc/unix/procsup.lo
threadproc/unix/signals.lo threadproc/unix/thread.lo threadproc/unix/threadpriv.lo
time/unix/time.lo time/unix/timestr.lo user/unix/groupinfo.lo user/unix/userinfo.lo
-luuid -lrt -lcrypt -lpthread
/usr/bin/ld: cannot find -load
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[3]: *** [libapr-1.la] Error 1
make[3]: Leaving directory `/home/my/Downloads/httpd-2.2.19/srclib/apr'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/my/Downloads/httpd-2.2.19/srclib/apr'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/my/Downloads/httpd-2.2.19/srclib'
make: *** [all-recursive] Error 1
