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Reply to topic   Topic: Compile session mod on Apache 2.4.43 dllimport not allowed
Author
Apache_clan



Joined: 30 Apr 2020
Posts: 2
Location: USA,Bay Area

PostPosted: Thu 30 Apr '20 19:30    Post subject: Compile session mod on Apache 2.4.43 dllimport not allowed Reply with quote

Build info: windows 64, visual studio 2019 developer tool. Cmake, nmake

I was able to compile about 20 modules as part of libhttpd.dll by tweaking the original CMakeLists.txt
and modules.c, but I am not successful on compiling session module.

In CMakeList.txt:
SET(LIBHTTPD_SOURCES
${extra_builtin_modules}
${PROJECT_BINARY_DIR}/modules.c
modules/session/mod_session.c

In modules.c
extern module session_module;
and included to 3 declaration functions.


My cmake:
cmake -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX=./Release/x64 -DCMAKE_BUILD_TYPE=Release -DINSTALL_MANUAL=OFF -DINSTALL_PDB=OFF -DINSTALL_MANUAL=OFF -DEXTRA_INCLUDES=C:/OpenSSL-Win64/include ../src/httpd-2.4.43

nmake error:
E:\Dev\src\httpd-2.4.43\modules\session\mod_session.c(44): error C2491: 'ap_hook_session_load': definition of dllimport function not allowed
E:\Dev\src\httpd-2.4.43\modules\session\mod_session.c(44): error C2491: 'ap_hook_get_session_load': definition of dllimport function not allowed

Checking mod_session.c that error refers to this code:
APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(ap, SESSION, int, session_load,
(request_rec * r, session_rec ** z), (r, z), DECLINED);
APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(ap, SESSION, int, session_save,
(request_rec * r, session_rec * z), (r, z), DECLINED);
APR_IMPLEMENT_EXTERNAL_HOOK_RUN_ALL(ap, SESSION, int, session_encode,
(request_rec * r, session_rec * z), (r, z), OK, DECLINED);
APR_IMPLEMENT_EXTERNAL_HOOK_RUN_ALL(ap, SESSION, int, session_decode,
(request_rec * r, session_rec * z), (r, z), OK, DECLINED);

I am not sure how to fix this error. I am researching about dllimport and dllexport but I have no idea how to fix this.

I am not an expert in programming or compiling. I hope someone can shine some light on this error.
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Apache_clan



Joined: 30 Apr 2020
Posts: 2
Location: USA,Bay Area

PostPosted: Sat 02 May '20 21:58    Post subject: Its fixed now. Due to Makefile issue with dllexport Reply with quote

The makefile is such a pain to work with, causing so many errors, like parsing includes and switching between dllexport and dllimport.

See my final build.
httpd.exe -t -D DUMP_MODULES
Loaded Modules:
core_module (static)
win32_module (static)
mpm_winnt_module (static)
http_module (static)
so_module (static)
alias_module (static)
env_module (static)
headers_module (static)
setenvif_module (static)
version_module (static)
buffer_module (static)
mime_module (static)
dir_module (static)
access_compat_module (static)
autoindex_module (static)
authn_core_module (static)
auth_digest_module (static)
auth_basic_module (static)
authn_file_module (static)
authz_core_module (static)
authz_host_module (static)
authz_user_module (static)
log_config_module (static)
session_module (static)
session_crypto_module (static)
cache_module (static)
cache_socache_module (static)
socache_shmcb_module (static)
ssl_module (static)


27,648 httpd.exe
3,317,760 libhttpd.dll
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 6822
Location: Germany, Next to Hamburg

PostPosted: Sat 02 May '20 23:43    Post subject: Reply with quote

Please post your working cmake file.

Why all modules static and not shared?
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