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b21c569cea
Peter Eisentraut noted that commit 40b9f1921 had broken a configure
behavior that some people might rely on: AC_CHECK_PROGS(FOO,...) will
allow the search to be overridden by specifying a value for FOO on
configure's command line or in its environment, but AC_PATH_PROGS(FOO,...)
accepts such an override only if it's an absolute path. We had worked
around that behavior for some, but not all, of the pre-existing uses
of AC_PATH_PROGS by just skipping the macro altogether when FOO is
already set. Let's standardize on that workaround for all uses of
AC_PATH_PROGS, new and pre-existing, by wrapping AC_PATH_PROGS in a
new macro PGAC_PATH_PROGS. While at it, fix a deficiency of the old
workaround code by making sure we report the setting to configure's log.
Eventually I'd like to improve PGAC_PATH_PROGS so that it converts
non-absolute override inputs to absolute form, eg "PYTHON=python3"
becomes, say, PYTHON = /usr/bin/python3. But that will take some
nontrivial coding so it doesn't seem like a thing to do in late beta.
Discussion: https://postgr.es/m/90a92a7d-938e-507a-3bd7-ecd2b4004689@2ndquadrant.com
94 lines
2.4 KiB
Plaintext
94 lines
2.4 KiB
Plaintext
# config/tcl.m4
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# Autoconf macros to check for Tcl related things
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AC_DEFUN([PGAC_PATH_TCLSH],
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[PGAC_PATH_PROGS(TCLSH, [tclsh tcl tclsh8.6 tclsh86 tclsh8.5 tclsh85 tclsh8.4 tclsh84])
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if test x"$TCLSH" = x""; then
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AC_MSG_ERROR([Tcl shell not found])
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fi
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])
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# PGAC_PATH_TCLCONFIGSH([SEARCH-PATH])
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# ------------------------------------
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AC_DEFUN([PGAC_PATH_TCLCONFIGSH],
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[AC_REQUIRE([PGAC_PATH_TCLSH])[]dnl
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AC_BEFORE([$0], [PGAC_PATH_TKCONFIGSH])[]dnl
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AC_MSG_CHECKING([for tclConfig.sh])
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# Let user override test
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if test -z "$TCL_CONFIG_SH"; then
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pgac_test_dirs="$1"
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set X $pgac_test_dirs; shift
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if test $[#] -eq 0; then
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test -z "$TCLSH" && AC_MSG_ERROR([unable to locate tclConfig.sh because no Tcl shell was found])
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set X `echo 'puts $auto_path' | $TCLSH`; shift
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fi
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for pgac_dir do
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if test -r "$pgac_dir/tclConfig.sh"; then
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TCL_CONFIG_SH=$pgac_dir/tclConfig.sh
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break
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fi
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done
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fi
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if test -z "$TCL_CONFIG_SH"; then
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AC_MSG_RESULT(no)
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AC_MSG_ERROR([file 'tclConfig.sh' is required for Tcl])
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else
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AC_MSG_RESULT([$TCL_CONFIG_SH])
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fi
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AC_SUBST([TCL_CONFIG_SH])
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])# PGAC_PATH_TCLCONFIGSH
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# PGAC_PATH_TKCONFIGSH([SEARCH-PATH])
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# ------------------------------------
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AC_DEFUN([PGAC_PATH_TKCONFIGSH],
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[AC_REQUIRE([PGAC_PATH_TCLSH])[]dnl
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AC_MSG_CHECKING([for tkConfig.sh])
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# Let user override test
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if test -z "$TK_CONFIG_SH"; then
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pgac_test_dirs="$1"
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set X $pgac_test_dirs; shift
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if test $[#] -eq 0; then
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test -z "$TCLSH" && AC_MSG_ERROR([unable to locate tkConfig.sh because no Tcl shell was found])
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set X `echo 'puts $auto_path' | $TCLSH`; shift
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fi
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for pgac_dir do
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if test -r "$pgac_dir/tkConfig.sh"; then
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TK_CONFIG_SH=$pgac_dir/tkConfig.sh
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break
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fi
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done
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fi
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if test -z "$TK_CONFIG_SH"; then
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AC_MSG_RESULT(no)
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AC_MSG_ERROR([file 'tkConfig.sh' is required for Tk])
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else
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AC_MSG_RESULT([$TK_CONFIG_SH])
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fi
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AC_SUBST([TK_CONFIG_SH])
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])# PGAC_PATH_TKCONFIGSH
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# PGAC_EVAL_TCLCONFIGSH(FILE, WANTED-VARS)
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# ----------------------------------------
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# Assigns variables listed in WANTED-VARS by reading FILE and
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# evaluating it according to the quoting scheme of tclConfig.sh and
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# tkConfig.sh. Calls AC_SUBST for each variable.
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AC_DEFUN([PGAC_EVAL_TCLCONFIGSH],
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[. "$1"
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m4_foreach([pgac_item], [$2],
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[eval pgac_item=\"[$]pgac_item\"
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AC_SUBST(pgac_item)])])
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