glm: switch to build_style=cmake

Fixes #4240

srcpkgs/glm/patches/fix-path.patch

@@ -0,0 +1,11 @@
+--- CMakeLists.txt.orig	2016-05-30 17:56:45.738244928 +0200
++++ CMakeLists.txt	2016-05-30 17:57:44.079247938 +0200
+@@ -176,7 +176,7 @@
+ 
+ install(
+     FILES 
+-        "${CMAKE_CURRENT_BINARY_DIR}/${GLM_INSTALL_CONFIGDIR}/glmConfig.cmake"
++        "${CMAKE_CURRENT_BINARY_DIR}/glmConfig.cmake"
+         "${CMAKE_CURRENT_BINARY_DIR}/glmVersion.cmake"
+     DESTINATION ${GLM_INSTALL_CONFIGDIR}
+ )

srcpkgs/glm/template

@@ -1,8 +1,9 @@
 # Template file for 'glm'
 pkgname=glm
 version=0.9.7.5
-revision=1
+revision=2
 noarch=yes
+build_style=cmake
 hostmakedepends="unzip"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
 license="MIT"
@@ -12,13 +13,6 @@ distfiles="https://github.com/g-truc/glm/releases/download/${version}/glm-${vers
 checksum=f39a908c6519e70ea1e91a8732e69aed84d28c46bc01cc3dedf71ca88b06716f
 wrksrc=${pkgname}
 
-do_install() {
-	vmkdir usr/include/glm
-	vmkdir usr/share/doc
-	vcopy glm usr/include
-	vcopy doc usr/share/doc/glm
-	rm -f ${DESTDIR}/usr/include/glm/CMakeLists.txt
-	find ${DESTDIR} -type f -exec chmod 644 {} \;
-	find ${DESTDIR} -type d -exec chmod 755 {} \;
+post_install() {
 	vlicense copying.txt
 }