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m4: Fix GTK_CHECK_BACKEND() to also check for a minimum version

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This should make the macro slightly more useful.

Update the documentation mentioning the macro as well.
This commit is contained in:
Emmanuele Bassi
2011-02-17 09:33:07 +00:00
parent a88a1fc832
commit 64934a7623
3 changed files with 15 additions and 23 deletions
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29
m4macros/gtk-3.0.m4
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@ -195,34 +195,25 @@ main ()
rm -f conf.gtktest
])
dnl GTK_CHECK_BACKEND(BACKEND-NAME [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
dnl GTK_CHECK_BACKEND(BACKEND-NAME [, MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Tests for BACKEND-NAME in the GTK targets list
dnl
AC_DEFUN([GTK_CHECK_BACKEND],
[
backend=$1
if test "x$backend" = "x"; then
AC_MSG_ERROR([A backend must be specified])
fi
pkg_config_args=ifelse([$1],,gtk+-3.0, gtk+-$1-3.0)
min_gtk_version=ifelse([$2],,3.0.0,$2)
PKG_PROG_PKG_CONFIG([0.16])
GDK_TARGETS=`$PKG_CONFIG --variable=targets gdk-3.0`
if test "x$GDK_TARGETS" = "x"; then
ifelse([$3],,[AC_MSG_ERROR([GDK targets not found.])],[$3])
AC_PATH_PROG(PKG_CONFIG, [pkg-config], [AC_MSG_ERROR([No pkg-config found])])
if $PKG_CONFIG --atleast-version $min_gtk_version $pkg_config_args ; then
target_found=yes
else
ifelse([$2],,[:],[$2])
target_found=no
fi
target_found=no
for target in $GDK_TARGETS; do
if test "x$target" = "x$backend"; then
target_found=yes
fi
done
if test "x$target_found" = "xno"; then
ifelse([$3],,[AC_MSG_ERROR([Backend $backend not found.])],[$3])
ifelse([$4],,[AC_MSG_ERROR([Backend $backend not found.])],[$4])
else
ifelse([$2],,[:],[$2])
ifelse([$3],,[:],[$3])
fi
])