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portable: template: use as a subproject Move template into its own subproject as it's only needed at compile-time and shouldn't be installed. This needs compiling with the host compiler which is configurable via HOSTCC and HOSTCLFAG environment variables. This diff largely from op@ but additional tweaking from myself.
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 1 9981e8e3 2023-01-19 thomas AC_INIT([template], 1.0, [op@openbsd.org])

 2 9981e8e3 2023-01-19 thomas AC_CONFIG_LIBOBJ_DIR(../compat)

 3 9981e8e3 2023-01-19 thomas AM_INIT_AUTOMAKE([foreign subdir-objects])

 4 9981e8e3 2023-01-19 thomas 

 5 9981e8e3 2023-01-19 thomas AC_ARG_VAR(HOSTCC, [The C compiler on the host.])

 6 9981e8e3 2023-01-19 thomas AC_ARG_VAR(HOSTCFLAGS, [CFLAGS for the host compiler])

 7 9981e8e3 2023-01-19 thomas 

 8 9981e8e3 2023-01-19 thomas # When CFLAGS isn't set at this stage and gcc is detected by the macro below,

 9 9981e8e3 2023-01-19 thomas # autoconf will automatically use CFLAGS="-O2 -g". Prevent that by using an

10 9981e8e3 2023-01-19 thomas # empty default.

11 9981e8e3 2023-01-19 thomas : ${CFLAGS=""}

12 9981e8e3 2023-01-19 thomas 

13 9981e8e3 2023-01-19 thomas # Save user CPPFLAGS, CFLAGS and LDFLAGS. We need to change them because

14 9981e8e3 2023-01-19 thomas # AC_CHECK_HEADER doesn't give us any other way to update the include

15 9981e8e3 2023-01-19 thomas # paths. But for Makefile.am we want to use AM_CPPFLAGS and friends.

16 9981e8e3 2023-01-19 thomas SAVED_CFLAGS="$CFLAGS"

17 9981e8e3 2023-01-19 thomas 

18 9981e8e3 2023-01-19 thomas test -n "$HOSTCC"	&& export CC="$HOSTCC"

19 9981e8e3 2023-01-19 thomas test -n "$HOSTCFLAGS"	&& export CFLAGS="$SAVED_CFLAGS $HOSTCFLAGS"

20 9981e8e3 2023-01-19 thomas 

21 9981e8e3 2023-01-19 thomas AC_PROG_CC

22 9981e8e3 2023-01-19 thomas AC_PROG_YACC

23 9981e8e3 2023-01-19 thomas 

24 9981e8e3 2023-01-19 thomas AM_CPPFLAGS="$CFLAGS"

25 9981e8e3 2023-01-19 thomas 

26 9981e8e3 2023-01-19 thomas AC_REPLACE_FUNCS([ \

27 9981e8e3 2023-01-19 thomas 	asprintf \

28 9981e8e3 2023-01-19 thomas 	err \

29 9981e8e3 2023-01-19 thomas 	getprogname \

30 9981e8e3 2023-01-19 thomas 	reallocarray \

31 9981e8e3 2023-01-19 thomas ])

32 9981e8e3 2023-01-19 thomas 

33 9981e8e3 2023-01-19 thomas AC_CHECK_DECL([TAILQ_REMOVE], [],

34 9981e8e3 2023-01-19 thomas     [AC_MSG_ERROR("*** sys/queue.h is missing key defines ***")],

35 9981e8e3 2023-01-19 thomas     [#include <sys/queue.h>])

36 9981e8e3 2023-01-19 thomas 

37 9981e8e3 2023-01-19 thomas AC_CONFIG_FILES([Makefile])

38 9981e8e3 2023-01-19 thomas AC_OUTPUT