Build fails without bison & flex

[smr99]

If either one is missing, the configure step fails such as this:

-- Looking for include file pwd.h - found
-- Could NOT find BISON (missing: BISON_EXECUTABLE)
-- Found FLEX: /usr/bin/flex (found version "2.5.39")
CMake Error at Testing/CMakeLists.txt:45 (GET_PROPERTY):
get_property could not find TARGET minccalc. Perhaps it has not yet been
created.

The issue is that progs/CMakeLists.txt will simply omit building minccalc if bison or flex is not found. However, Testing/CMakeLists.txt is not so flexible and fails trying to get properties of "minccalc".

So you could make Testing flexible enough to omit testing minccalc if the latter is not built. Alternatively, you could simply require bison/flex and remove the conditional in progs/CMakeLists.

[andrewjanke]

the logic of the autoconf build was as such:

if flex is found, build the .l and .y targets.

if flex isn't found, use the prebuilt .c versions that were built during
the make dist target but not in the git repository.

can we replicate this behavior with cmake and cpack?

a
On 13/09/2015 11:37 am, "Steven M. Robbins" notifications@github.com
wrote:

If either one is missing, the configure step fails such as this:

-- Looking for include file pwd.h - found
-- Could NOT find BISON (missing: BISON_EXECUTABLE)
-- Found FLEX: /usr/bin/flex (found version "2.5.39")

CMake Error at Testing/CMakeLists.txt:45 (GET_PROPERTY):
get_property could not find TARGET minccalc. Perhaps it has not yet been
created.

The issue is that progs/CMakeLists.txt will simply omit building minccalc
if bison or flex is not found. However, Testing/CMakeLists.txt is not so
flexible and fails trying to get properties of "minccalc".

So you could make Testing flexible enough to omit testing minccalc if the
latter is not built. Alternatively, you could simply require bison/flex and
remove the conditional in progs/CMakeLists.

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