Re: crypto/gc: fix link error with --with-libgcrypt

[Bruno Haible]

> A gnulib testdir created through
> 
>   ./gnulib-tool --create-testdir --dir=../testdir1 --single-configure 
> crypto/gc-md5
> 
> when built with
> 
>   ./configure --with-libgcrypt && make
> 
> fails with

Similar link errors also exist for crypto/gc-md2, crypto/gc-md4,
crypto/gc-rijndael, and they are not fixed through the previous patch.
This patch is necessary too:


2019-08-24  Bruno Haible  <address@hidden>

        crypto/gc-{md[24],rijndael} tests: Fix link error with --with-libgcrypt.
        * modules/crypto/gc-md2-tests (test_gc_md2_LDADD): New variable.
        * modules/crypto/gc-md4-tests (test_gc_md4_LDADD): New variable.
        * modules/crypto/gc-rijndael-tests (test_gc_rijndael_LDADD): New
        variable.

diff --git a/modules/crypto/gc-md2-tests b/modules/crypto/gc-md2-tests
index 759d3d5..74ccdf0 100644
--- a/modules/crypto/gc-md2-tests
+++ b/modules/crypto/gc-md2-tests
@@ -8,3 +8,4 @@ configure.ac:
 Makefile.am:
 TESTS += test-gc-md2
 check_PROGRAMS += test-gc-md2
+test_gc_md2_LDADD = $(LDADD) @LIB_CRYPTO@
diff --git a/modules/crypto/gc-md4-tests b/modules/crypto/gc-md4-tests
index c6bd64a..b2a4ce1 100644
--- a/modules/crypto/gc-md4-tests
+++ b/modules/crypto/gc-md4-tests
@@ -8,3 +8,4 @@ configure.ac:
 Makefile.am:
 TESTS += test-gc-md4
 check_PROGRAMS += test-gc-md4
+test_gc_md4_LDADD = $(LDADD) @LIB_CRYPTO@
diff --git a/modules/crypto/gc-rijndael-tests b/modules/crypto/gc-rijndael-tests
index 1bf2433..c7aaee2 100644
--- a/modules/crypto/gc-rijndael-tests
+++ b/modules/crypto/gc-rijndael-tests
@@ -8,3 +8,4 @@ configure.ac:
 Makefile.am:
 TESTS += test-gc-rijndael
 check_PROGRAMS += test-gc-rijndael
+test_gc_rijndael_LDADD = $(LDADD) @LIB_CRYPTO@