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configure: More use of AC_ARG_VAR

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AC_ARG_VAR is necessary if an environment variable influences a
configure result that is then used by other tests that are cached.
With AC_ARG_VAR, a change in the variable is detected on subsequent
configure runs and the user is then advised to remove the cache.

This adds AC_ARG_VAR calls for: MSGFMT, PERL, PYTHON, TCLSH, XML2_CONFIG

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/30672.1546816567@sss.pgh.pa.us
This commit is contained in:
Peter Eisentraut
2019-01-18 08:29:42 +01:00
parent 80971bc206
commit 29b3ac7546
6 changed files with 18 additions and 3 deletions
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1
config/perl.m4
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@@ -5,6 +5,7 @@
# --------------
AC_DEFUN([PGAC_PATH_PERL],
[PGAC_PATH_PROGS(PERL, perl)
AC_ARG_VAR(PERL, [Perl program])dnl
if test "$PERL"; then
pgac_perl_version=`$PERL -v 2>/dev/null | sed -n ['s/This is perl.*v[a-z ]*\([0-9]\.[0-9][0-9.]*\).*$/\1/p']`

1
config/programs.m4
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@@ -245,6 +245,7 @@ AC_DEFUN([PGAC_CHECK_GETTEXT],
AC_CHECK_HEADER([libintl.h], [],
[AC_MSG_ERROR([header file <libintl.h> is required for NLS])])
PGAC_PATH_PROGS(MSGFMT, msgfmt)
AC_ARG_VAR(MSGFMT, [msgfmt program for NLS])dnl
if test -z "$MSGFMT"; then
AC_MSG_ERROR([msgfmt is required for NLS])
fi

1
config/python.m4
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@@ -17,6 +17,7 @@
# newer version.
AC_DEFUN([PGAC_PATH_PYTHON],
[PGAC_PATH_PROGS(PYTHON, [python python3 python2])
AC_ARG_VAR(PYTHON, [Python program])dnl
if test x"$PYTHON" = x""; then
AC_MSG_ERROR([Python not found])
fi

1
config/tcl.m4
View File

@@ -5,6 +5,7 @@
AC_DEFUN([PGAC_PATH_TCLSH],
[PGAC_PATH_PROGS(TCLSH, [tclsh tcl tclsh8.6 tclsh86 tclsh8.5 tclsh85 tclsh8.4 tclsh84])
AC_ARG_VAR(TCLSH, [Tcl interpreter program (tclsh)])dnl
if test x"$TCLSH" = x""; then
AC_MSG_ERROR([Tcl shell not found])
fi