[Paraview-developers] failed to compile H5detect.c

[Favre Jean]

I have run into a hurdle compiling 5.3 on a Linux box with gcc version 5.3.0 (cmake 3.4.1)

the error is:

/dev/shm/jfavre/ParaView/ParaView-v5.3.0/VTK/ThirdParty/hdf5/vtkhdf5/src/H5detect.c:87:19: error: unknown type name ‘sigjmp_buf’
 #define H5JMP_BUF sigjmp_buf
                   ^
/dev/shm/jfavre/ParaView/ParaView-v5.3.0/VTK/ThirdParty/hdf5/vtkhdf5/src/H5detect.c:163:8: note: in expansion of macro ‘H5JMP_BUF’
 static H5JMP_BUF jbuf_g;

the error is caused by using the compilation flag -std=c99. Replacing it with -std=gnu99, then the compilation succeeds. Consequently, I patched the file VTK/ThirdParty/hdf5/vtkhdf5/CMakeLists.txt

-      set (CMAKE_C_FLAGS "${CMAKE_ANSI_CFLAGS} ${CMAKE_C_FLAGS} -std=c99 -fomit-frame-pointer -finline-functions -fno-common")
+      set (CMAKE_C_FLAGS "${CMAKE_ANSI_CFLAGS} ${CMAKE_C_FLAGS} -std=gnu99 -fomit-frame-pointer -finline-functions -fno-common")

I am not sure if this is applicable to other systems. This posting is for documentation. It may be useful to someone else.

-----------------
Jean/CSCS
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