programs: cmake: Use list of executables

Use list of executables to:
- factorize the code to define executables
- highlight the similarities and differences of the executable definitions
- avoid list duplication

Use alphabetic order for executables in lists.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/programs/fuzz/CMakeLists.txt b/programs/fuzz/CMakeLists.txt
index 17ec3f6..9d4043a 100644
--- a/programs/fuzz/CMakeLists.txt
+++ b/programs/fuzz/CMakeLists.txt
@@ -11,70 +11,41 @@
 endif(ENABLE_ZLIB_SUPPORT)
 
 find_library(FUZZINGENGINE_LIB FuzzingEngine)
-
-if(NOT FUZZINGENGINE_LIB)
-    add_executable(fuzz_x509csr fuzz_x509csr.c onefile.c)
-    target_link_libraries(fuzz_x509csr ${libs})
-
-    add_executable(fuzz_x509crl fuzz_x509crl.c onefile.c)
-    target_link_libraries(fuzz_x509crl ${libs})
-
-    add_executable(fuzz_x509crt fuzz_x509crt.c onefile.c)
-    target_link_libraries(fuzz_x509crt ${libs})
-
-    add_executable(fuzz_privkey fuzz_privkey.c onefile.c)
-    target_link_libraries(fuzz_privkey ${libs})
-
-    add_executable(fuzz_pubkey fuzz_pubkey.c onefile.c)
-    target_link_libraries(fuzz_pubkey ${libs})
-
-    add_executable(fuzz_client fuzz_client.c common.c onefile.c)
-    target_link_libraries(fuzz_client ${libs})
-
-    add_executable(fuzz_server fuzz_server.c common.c onefile.c)
-    target_link_libraries(fuzz_server ${libs})
-
-    add_executable(fuzz_dtlsclient fuzz_dtlsclient.c common.c onefile.c)
-    target_link_libraries(fuzz_dtlsclient ${libs})
-
-    add_executable(fuzz_dtlsserver fuzz_dtlsserver.c common.c onefile.c)
-    target_link_libraries(fuzz_dtlsserver ${libs})
-else()
+if(FUZZINGENGINE_LIB)
     project(fuzz CXX)
-
-    add_executable(fuzz_x509csr fuzz_x509csr.c)
-    target_link_libraries(fuzz_x509csr ${libs} FuzzingEngine)
-    SET_TARGET_PROPERTIES(fuzz_x509csr PROPERTIES LINKER_LANGUAGE CXX)
-
-    add_executable(fuzz_x509crl fuzz_x509crl.c)
-    target_link_libraries(fuzz_x509crl ${libs} FuzzingEngine)
-    SET_TARGET_PROPERTIES(fuzz_x509crl PROPERTIES LINKER_LANGUAGE CXX)
-
-    add_executable(fuzz_x509crt fuzz_x509crt.c)
-    target_link_libraries(fuzz_x509crt ${libs} FuzzingEngine)
-    SET_TARGET_PROPERTIES(fuzz_x509crt PROPERTIES LINKER_LANGUAGE CXX)
-
-    add_executable(fuzz_privkey fuzz_privkey.c)
-    target_link_libraries(fuzz_privkey ${libs} FuzzingEngine)
-    SET_TARGET_PROPERTIES(fuzz_privkey PROPERTIES LINKER_LANGUAGE CXX)
-
-    add_executable(fuzz_pubkey fuzz_pubkey.c)
-    target_link_libraries(fuzz_pubkey ${libs} FuzzingEngine)
-    SET_TARGET_PROPERTIES(fuzz_pubkey PROPERTIES LINKER_LANGUAGE CXX)
-
-    add_executable(fuzz_client fuzz_client.c common.c)
-    target_link_libraries(fuzz_client ${libs} FuzzingEngine)
-    SET_TARGET_PROPERTIES(fuzz_client PROPERTIES LINKER_LANGUAGE CXX)
-
-    add_executable(fuzz_server fuzz_server.c common.c)
-    target_link_libraries(fuzz_server ${libs} FuzzingEngine)
-    SET_TARGET_PROPERTIES(fuzz_server PROPERTIES LINKER_LANGUAGE CXX)
-
-    add_executable(fuzz_dtlsclient fuzz_dtlsclient.c common.c)
-    target_link_libraries(fuzz_dtlsclient ${libs} FuzzingEngine)
-    SET_TARGET_PROPERTIES(fuzz_dtlsclient PROPERTIES LINKER_LANGUAGE CXX)
-
-    add_executable(fuzz_dtlsserver fuzz_dtlsserver.c common.c)
-    target_link_libraries(fuzz_dtlsserver ${libs} FuzzingEngine)
-    SET_TARGET_PROPERTIES(fuzz_dtlsserver PROPERTIES LINKER_LANGUAGE CXX)
 endif()
+
+set(executables_no_common_c
+    fuzz_privkey
+    fuzz_pubkey
+    fuzz_x509crl
+    fuzz_x509crt
+    fuzz_x509csr
+)
+
+set(executables_with_common_c
+    fuzz_client
+    fuzz_dtlsclient
+    fuzz_dtlsserver
+    fuzz_server
+)
+
+foreach(exe IN LISTS executables_no_common_c executables_with_common_c)
+
+    add_executable(${exe} ${exe}.c)
+
+    if (NOT FUZZINGENGINE_LIB)
+        target_link_libraries(${exe} ${libs})
+        target_sources(${exe} PRIVATE onefile.c)
+    else()
+        target_link_libraries(${exe} ${libs} FuzzingEngine)
+        SET_TARGET_PROPERTIES(${exe} PROPERTIES LINKER_LANGUAGE CXX)
+    endif()
+
+    # This emulates "if ( ... IN_LIST ... )" which becomes available in CMake 3.3
+    list(FIND executables_with_common_c ${exe} exe_index)
+    if (${exe_index} GREATER -1)
+        target_sources(${exe} PRIVATE common.c)
+    endif()
+
+endforeach()