[oe] [PATCH 2/2] php: fix linker errors by setting `ac_cv_func_dlopen=no`

[Max Kellermann]

From: Max Kellermann <max.kellermann at gmail.com>

The autoconf variable `ac_cv_func_dlopen` controls whether `dlopen()`
is available without linking `libdl.so`.  But that doesn't work:

 tmp-glibc/work/aarch64-oe-linux/php/7.2.10-r0/recipe-sysroot-native/usr/bin/aarch64-oe-linux/../../libexec/aarch64-oe-linux/gcc/aarch64-oe-linux/8.2.0/ld: ext/sqlite3/libsqlite/sqlite3.o: undefined reference to symbol 'dlsym@@GLIBC_2.17'
 tmp-glibc/work/aarch64-oe-linux/php/7.2.10-r0/recipe-sysroot-native/usr/bin/aarch64-oe-linux/../../libexec/aarch64-oe-linux/gcc/aarch64-oe-linux/8.2.0/ld: tmp-glibc/work/aarch64-oe-linux/php/7.2.10-r0/recipe-sysroot/lib/libdl.so.2: error adding symbols: DSO missing from command line

Leave `ac_cv_lib_dl_dlopen=yes`, because that's the one which controls
whether `-ldl` is needed.
---
 meta-oe/recipes-devtools/php/php.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta-oe/recipes-devtools/php/php.inc b/meta-oe/recipes-devtools/php/php.inc
index 99a25b94b..bfd0ddfb8 100644
--- a/meta-oe/recipes-devtools/php/php.inc
+++ b/meta-oe/recipes-devtools/php/php.inc
@@ -58,7 +58,7 @@ EXTRA_OECONF = "--enable-mbstring \
                 ${COMMON_EXTRA_OECONF} \
 "
 
-CACHED_CONFIGUREVARS += "ac_cv_func_dlopen=yes ac_cv_lib_dl_dlopen=yes"
+CACHED_CONFIGUREVARS += "ac_cv_func_dlopen=no ac_cv_lib_dl_dlopen=yes"
 
 EXTRA_OECONF_class-native = " \
                 --with-zlib=${STAGING_LIBDIR_NATIVE}/.. \
-- 
2.19.0