[devhelp] build: use AX_PKG_CHECK_MODULES

[Sébastien Wilmet <swilmet src gnome org>]

commit fae7da19512669822277ac4736e46f342bbfe9b0
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat May 6 12:09:50 2017 +0200

    build: use AX_PKG_CHECK_MODULES

 configure.ac              |   11 ++++-------
 data/libdevhelp-3.0.pc.in |    3 ++-
 2 files changed, 6 insertions(+), 8 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 388299b..237eee9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -55,13 +55,10 @@ AX_COMPILER_FLAGS([WARN_CFLAGS], [WARN_LDFLAGS], [yes])
 
 LT_LIB_M
 
-AX_REQUIRE_DEFINED([PKG_CHECK_MODULES])
-PKG_CHECK_MODULES(DEVHELP, [
-  gio-2.0 >= 2.38
-  gtk+-3.0 >= 3.22
-  webkit2gtk-4.0 >= 2.6
-  gsettings-desktop-schemas
-])
+AX_REQUIRE_DEFINED([AX_PKG_CHECK_MODULES])
+AX_PKG_CHECK_MODULES([DEVHELP],
+                    [gio-2.0 >= 2.38  gtk+-3.0 >= 3.22  webkit2gtk-4.0 >= 2.6],
+                    [gsettings-desktop-schemas])
 
 AC_ARG_WITH(zlib, [  --with-zlib=DIR         use zlib in DIR], zlibdir=$with_zlib)
 have_zlib=no
diff --git a/data/libdevhelp-3.0.pc.in b/data/libdevhelp-3.0.pc.in
index 615207f..174e256 100644
--- a/data/libdevhelp-3.0.pc.in
+++ b/data/libdevhelp-3.0.pc.in
@@ -5,7 +5,8 @@ includedir=@includedir@
 
 Name: devhelp
 Description: devhelp
-Requires: gtk+-3.0 webkit2gtk-4.0
+Requires: @AX_PACKAGE_REQUIRES@
+Requires.private: @AX_PACKAGE_REQUIRES_PRIVATE@
 Version: @VERSION@
 Libs: -L${libdir} -ldevhelp-3
 Cflags: -I${includedir}/devhelp-3.0