$ tar -xf.../freeradius-server-3.0.27.tar.gz
$ cd freeradius-server-3.0.27
$ ./configure --without-shared-libs
...
$ make VERBOSE=1
...
$ LINK build/bin/radeapclient
build/make/jlibtool --silent --mode=link gcc -o build/bin/radeapclient -static      build/objs/src/modules/rlm_eap/radeapclient.lo build/objs/src/main/files.lo build/objs/src/main/threads.lo build/objs/src/main/version.lo build/objs/src/main/cb.lo build/objs/src/main/tls.lo build/lib/libfreeradius-radius.la build/lib/libfreeradius-server.la build/lib/libfreeradius-eap.la  -lcrypto -lssl -ltalloc -latomic  -lpcre  -lcap -lnsl -lresolv -ldl -lpthread  -lreadline -lcrypto -lssl
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: build/lib/.libs/libfreeradius-server.a(log.o):/home/mkl/tmp/freeradius-server-3.0.27/src/main/log.c:49: multiple definition of `rad_debug_lvl'; build/objs/src/modules/rlm_eap/radeapclient.o:/home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/radeapclient.c:77: first defined here
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: build/lib/.libs/libfreeradius-eap.a(eapcrypto.o): in function `eapsim_calculate_keys':
/home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/libeap/eapcrypto.c:85:(.text+0xf4): undefined reference to `fr_sha1_init'
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: /home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/libeap/eapcrypto.c:86:(.text+0x10d): undefined reference to `fr_sha1_update'
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: /home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/libeap/eapcrypto.c:87:(.text+0x118): undefined reference to `fr_sha1_final'
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: build/lib/.libs/libfreeradius-eap.a(eapsimlib.o): in function `map_eapsim_basictypes':
/home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/libeap/eapsimlib.c:255:(.text+0x35e): undefined reference to `fr_hmac_sha1'
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: build/lib/.libs/libfreeradius-eap.a(eapsimlib.o): in function `eapsim_checkmac':
/home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/libeap/eapsimlib.c:462:(.text+0x7cb): undefined reference to `fr_hmac_sha1'
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: build/lib/.libs/libfreeradius-eap.a(fips186prf.o): in function `fips186_2prf':
/home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/libeap/fips186prf.c:134:(.text+0xc2): undefined reference to `fr_sha1_init'
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: /home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/libeap/fips186prf.c:139:(.text+0xf8): undefined reference to `fr_sha1_transform'
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: /home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/libeap/fips186prf.c:143:(.text+0x104): undefined reference to `fr_sha1_final_no_len'
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: /home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/libeap/fips186prf.c:153:(.text+0x179): undefined reference to `fr_sha1_init'
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: /home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/libeap/fips186prf.c:158:(.text+0x1af): undefined reference to `fr_sha1_transform'
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: /home/mkl/tmp/freeradius-server-3.0.27/src/modules/rlm_eap/libeap/fips186prf.c:162:(.text+0x1bb): undefined reference to `fr_sha1_final_no_len'
collect2: error: ld returned 1 exit status
make: *** [scripts/boiler.mk:638: build/bin/radeapclient] Error 1
$

*** ../freeradius-server-3.0.27.orig/src/modules/rlm_eap/radeapclient.mk        2024-07-08 23:21:42.000000000 +0200
--- src/modules/rlm_eap/radeapclient.mk 2025-06-04 16:03:19.901831694 +0200
***************
*** 5,18 ****
           ${top_srcdir}/src/main/threads.c \
           ${top_srcdir}/src/main/version.c

! TGT_PREREQS := libfreeradius-radius.a libfreeradius-server.a
  TGT_LDLIBS  := $(LIBS)

  #
  #  For future work, if we want radeapclient to become radclient
  #
  ifneq "$(filter libfreeradius-eap%,${ALL_TGTS})" ""
! TGT_PREREQS += libfreeradius-eap.a

  ifneq ($(OPENSSL_LIBS),)
  SOURCES += ${top_srcdir}/src/main/cb.c ${top_srcdir}/src/main/tls.c
--- 5,18 ----
           ${top_srcdir}/src/main/threads.c \
           ${top_srcdir}/src/main/version.c

! TGT_PREREQS :=
  TGT_LDLIBS  := $(LIBS)

  #
  #  For future work, if we want radeapclient to become radclient
  #
  ifneq "$(filter libfreeradius-eap%,${ALL_TGTS})" ""
! TGT_PREREQS += libfreeradius-eap.a libfreeradius-server.a libfreeradius-radius.a

  ifneq ($(OPENSSL_LIBS),)
  SOURCES += ${top_srcdir}/src/main/cb.c ${top_srcdir}/src/main/tls.c

*** ../freeradius-server-3.0.27.orig/src/main/radattr.mk        2024-07-08 23:21:42.000000000 +0200
--- src/main/radattr.mk 2025-06-04 15:58:58.197378019 +0200
***************
*** 1,10 ****
  TARGET                := radattr
  SOURCES               := radattr.c

! TGT_PREREQS   := libfreeradius-server.a libfreeradius-radius.a

  ifneq "$(WITH_DHCP)" "no"
! TGT_PREREQS   += libfreeradius-dhcp.a
  endif

  TGT_LDLIBS    := $(LIBS)
--- 1,10 ----
  TARGET                := radattr
  SOURCES               := radattr.c

! TGT_PREREQS   :=

  ifneq "$(WITH_DHCP)" "no"
! TGT_PREREQS   += libfreeradius-dhcp.a libfreeradius-radius.a libfreeradius-server.a
  endif

  TGT_LDLIBS    := $(LIBS)

*** ../freeradius-server-3.0.27.orig/src/modules/rlm_eap/radeapclient.c 2024-07-08 23:21:42.000000000 +0200
--- src/modules/rlm_eap/radeapclient.c  2025-06-04 16:02:28.853548098 +0200
***************
*** 74,80 ****
  #include <freeradius-devel/tls.h>
  #endif

! log_lvl_t rad_debug_lvl = 0;

  //TODO: move structures to a header file.

--- 74,80 ----
  #include <freeradius-devel/tls.h>
  #endif

! extern log_lvl_t rad_debug_lvl;

  //TODO: move structures to a header file.