[Cmake] custom target dependencies (readable version)

[Alexandre Laoubi]

Hi,
after reading the manual, the faq and some cmake digests I decide to submit
this certainly quite simple problem : a custom target dependency on the main
target.

I need that some .h and .c of my projet to be generated. They should be
placed
in "inc" and "src" directories of "basis". They are created in
"genextension" directory
by the "EOgenext" executable. They depend of a descriptive file
"EXTFILE_STD.TXT"
placed also in "genextension" dir.

Thus, my basis CMakeList.txt file contains the following statements :

ADD_CUSTOM_TARGET(updateEOglext ALL)
SET(EXTFILE ${EO_SOURCE_DIR}/genextension/EXTFILE_STD.TXT)
ADD_CUSTOM_COMMAND(
 COMMAND ${EO_BINARY_DIR}/genextension/EOgenext
 ARGS -i EXTFILE_STD.TXT
 TARGET updateEOglext
 DEPENDS ${EXTFILE}
)
ADD_CUSTOM_COMMAND(COMMAND cp  ARGS EOglext.h ${EO_SOURCE_DIR}/basis/inc
 TARGET updateEOglext )
ADD_CUSTOM_COMMAND(COMMAND cp  ARGS EOglext.c ${EO_SOURCE_DIR}/basis/src
 TARGET updateEOglext )
AUX_SOURCE_DIRECTORY(src SRCS)
ADD_LIBRARY(${LIB} ${SRCS})
ADD_DEPENDENCIES(${LIB} updateEOglext)

It produces the following makefile (extract) :

basis_DEPEND_LIBS =
#---------------------------------------------------------
# static library
#
libbasis.a: $(basis_SRC_OBJS)  $(basis_DEPEND_LIBS)
    echo "Building static library libbasis.a..."
    $(RM) libbasis.a
    /usr/bin/ar cr libbasis.a  $(basis_SRC_OBJS)
    /usr/bin/ranlib libbasis.a
#---------------------------------------------------------
# Utility
#
updateEOglext:  \
/cygdrive/c/gina2/PUBLIC/ala/EOenv/EO/genextension/EXTFILE_STD.TXT
    echo "Building Utility updateEOglext..."

    /cygdrive/c/gina2/PUBLIC/ala/EOenv/cmakeEO/genextension/EOgenext -i
EXTFILE_STD.TXT
    cp EOglext.h /cygdrive/c/gina2/PUBLIC/ala/EOenv/EO/basis/inc
    cp EOglext.c /cygdrive/c/gina2/PUBLIC/ala/EOenv/EO/basis/src

Unfortunately there is no dependency at all between the final target lib
libbasis.a and updateEOglext.
I tried to express this dependency with ADD_DEPENDENCIES but...
Any way is there a mean to express the depency between the main target and a
custom one ?
Thanks.
Alexandre Laoubi