From ab1c4e6ba23831a52e735c3253edaca3b97420b9 Mon Sep 17 00:00:00 2001
From: Allen Byrne <byrn@hdfgroup.org>
Date: Thu, 3 Dec 2015 10:19:52 -0500
Subject: [svn-r28497] Avoid race condition on creating same source file.

---
 src/CMakeLists.txt | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 523ab3a..404d44a 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -836,10 +836,9 @@ add_custom_command (
 #-----------------------------------------------------------------------------
 # Add H5Tinit source to build - generated by H5Detect/CMake at configure time
 #-----------------------------------------------------------------------------
-set (common_SRCS ${common_SRCS} ${HDF5_BINARY_DIR}/H5Tinit.c)
-set (common_SRCS ${common_SRCS} ${HDF5_BINARY_DIR}/H5lib_settings.c)
+set (gen_SRCS ${HDF5_BINARY_DIR}/H5Tinit.c ${HDF5_BINARY_DIR}/H5lib_settings.c)
 
-add_library (${HDF5_LIB_TARGET} STATIC ${common_SRCS} ${H5_PUBLIC_HEADERS} ${H5_PRIVATE_HEADERS} ${H5_GENERATED_HEADERS})
+add_library (${HDF5_LIB_TARGET} STATIC ${common_SRCS} ${gen_SRCS} ${H5_PUBLIC_HEADERS} ${H5_PRIVATE_HEADERS} ${H5_GENERATED_HEADERS})
 TARGET_C_PROPERTIES (${HDF5_LIB_TARGET} STATIC " " " ")
 target_link_libraries (${HDF5_LIB_TARGET} ${LINK_LIBS})
 if (NOT WIN32)
@@ -865,7 +864,25 @@ endif (HDF5_ENABLE_DEBUG_APIS)
 set (install_targets ${HDF5_LIB_TARGET})
 
 if (BUILD_SHARED_LIBS)
-  add_library (${HDF5_LIBSH_TARGET} SHARED ${common_SRCS} ${H5_PUBLIC_HEADERS} ${H5_PRIVATE_HEADERS} ${H5_GENERATED_HEADERS})
+  file (MAKE_DIRECTORY "${HDF5_BINARY_DIR}/shared")
+  set (CMD $<TARGET_FILE:H5detect>)
+  add_custom_command (
+      OUTPUT ${HDF5_BINARY_DIR}/shared/H5Tinit.c
+      COMMAND ${CMD}
+      ARGS > ${HDF5_BINARY_DIR}/shared/H5Tinit.c
+      DEPENDS H5detect
+      WORKING_DIRECTORY ${HDF5_BINARY_DIR}/shared
+  )
+  set (CMD $<TARGET_FILE:H5make_libsettings>)
+  add_custom_command (
+      OUTPUT ${HDF5_BINARY_DIR}/shared/H5lib_settings.c
+      COMMAND ${CMD}
+      ARGS > ${HDF5_BINARY_DIR}/shared/H5lib_settings.c
+      DEPENDS H5make_libsettings
+      WORKING_DIRECTORY ${HDF5_BINARY_DIR}/shared
+  )
+  set (shared_gen_SRCS ${HDF5_BINARY_DIR}/shared/H5Tinit.c ${HDF5_BINARY_DIR}/shared/H5lib_settings.c)
+  add_library (${HDF5_LIBSH_TARGET} SHARED ${common_SRCS} ${shared_gen_SRCS} ${H5_PUBLIC_HEADERS} ${H5_PRIVATE_HEADERS} ${H5_GENERATED_HEADERS})
   TARGET_C_PROPERTIES (${HDF5_LIBSH_TARGET} SHARED " " " ")
   target_link_libraries (${HDF5_LIBSH_TARGET} ${LINK_SHARED_LIBS})
   if (NOT WIN32)
-- 
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