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configure: check for dlsym as well 

For some reason, when compiling with gcc-asan and a recent enough gcc
version(seen on 5.3+ so far), linking dlopen works without -ldl, but
dlsym fails with:

undefined reference to symbol 'dlsym@@GLIBC_2.2.5'

So this patchs checks for both dlopen and dlsym to work for determining
if -ldl is needed.
This commit is contained in:
Timo Rothenpieler 2016-09-01 11:18:00 +02:00
parent 47bc1bdafb
commit 1c37be6e95
1 changed files with 2 additions and 2 deletions
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4
configure vendored
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@ -5379,9 +5379,9 @@ check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_
check_ldflags -Wl,--as-needed
check_ldflags -Wl,-z,noexecstack
if check_func dlopen; then
if check_func dlopen && check_func dlsym; then
ldl=
elif check_func dlopen -ldl; then
elif check_func dlopen -ldl && check_func dlsym -ldl; then
ldl=-ldl
fi