[libc] Add integration tests.

Summary:
This patch aims to add integration tests to check the following:
1) Header files are generated as expected.
2) Libc functions have the correct public name.
3) Libc functions have the correct return type and parameter types.
4) Symbols are exposed in the public lib.a files.

Reviewers: sivachandra, abrachet

Reviewed By: sivachandra

Subscribers: aheejin, ecnelises, dxf, mgorny, jfb, tschuett, libc-commits

Tags: #libc-project

Differential Revision: https://reviews.llvm.org/D79192

1 files changed, 4 insertions, 57 deletions

diff --git a/libc/lib/CMakeLists.txt b/libc/lib/CMakeLists.txt
index e0921d93d410..deae56e874ec 100644
--- a/libc/lib/CMakeLists.txt
+++ b/libc/lib/CMakeLists.txt
@@ -1,69 +1,16 @@
+include("${LIBC_SOURCE_DIR}/config/${LIBC_TARGET_OS}/${LIBC_TARGET_MACHINE}/entrypoints.txt")
+include("${LIBC_SOURCE_DIR}/config/${LIBC_TARGET_OS}/${LIBC_TARGET_MACHINE}/headers.txt")
 
 add_entrypoint_library(
   llvmlibc
   DEPENDS
-    # assert.h entrypoints
-    libc.src.assert.__assert_fail
-
-    # errno.h entrypoints
-    libc.src.errno.__errno_location
-
-    # signal.h entrypoints
-    libc.src.signal.raise
-    libc.src.signal.sigaction
-    libc.src.signal.sigdelset
-    libc.src.signal.sigaddset
-    libc.src.signal.sigemptyset
-    libc.src.signal.sigprocmask
-    libc.src.signal.sigfillset
-    libc.src.signal.signal
-
-    # stdlib.h entrypoints
-    libc.src.stdlib._Exit
-    libc.src.stdlib.abort
-
-    # string.h entrypoints
-    libc.src.string.bzero
-    libc.src.string.memcpy
-    libc.src.string.memset
-    libc.src.string.strcat
-    libc.src.string.strcpy
-    libc.src.string.strlen
-
-    # sys/mman.h entrypoints
-    libc.src.sys.mman.mmap
-    libc.src.sys.mman.munmap
-
-    # threads.h entrypoints
-    libc.src.threads.call_once
-    libc.src.threads.mtx_init
-    libc.src.threads.mtx_lock
-    libc.src.threads.mtx_unlock
-    libc.src.threads.thrd_create
-    libc.src.threads.thrd_join
-
-    # unistd.h entrypoints
-    libc.src.unistd.write
+  ${LIBC_ENTRYPOINTS}
 )
 
 add_entrypoint_library(
   llvmlibm
   DEPENDS
-    # math.h entrypoints
-    libc.src.math.ceil
-    libc.src.math.ceilf
-    libc.src.math.cosf
-    libc.src.math.fabs
-    libc.src.math.fabsf
-    libc.src.math.floor
-    libc.src.math.floorf
-    libc.src.math.expf
-    libc.src.math.exp2f
-    libc.src.math.round
-    libc.src.math.sincosf
-    libc.src.math.sinf
-    libc.src.math.trunc
-    libc.src.math.truncf
+  ${LIBM_ENTRYPOINTS}
 )
 
 add_redirector_library(