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configure: also trace two important pkg-config envs

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`PKG_CONFIG_LIBDIR` and `PKG_CONFIG_PATH`.

To help debugging dependency issues. Example:
```
configure: pkg-config --exists openssl trace:
---- begin
PKG_CONFIG_LIBDIR: '/home/runner/libressl/build/lib/pkgconfig'
PKG_CONFIG_PATH: '/home/runner/libressl/build/lib/pkgconfig:/home/runner/nghttp3/build/lib/pkgconfig:/home/runner/ngtcp2/build/lib/pkgconfig:/home/runner/nghttp2/build/lib/pkgconfig'
trying path: /home/runner/libressl/build/lib/pkgconfig for openssl
trying path: /home/runner/libressl/build/lib/pkgconfig for libssl
trying path: /home/runner/libressl/build/lib/pkgconfig for libcrypto
---- end
```

Cherry-picked from #20920
Follow-up to 04d90b5deb #20931

Closes #20942
This commit is contained in:
Viktor Szakats 2026-03-16 18:20:51 +01:00
parent ec3f198ef0
commit b317506cac
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1 changed files with 8 additions and 2 deletions
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10
acinclude.m4
View file

@ -1336,9 +1336,15 @@ AC_DEFUN([CURL_TRACE_PCDIR], [
dnl Example pkgconf line:
dnl libpkgconf/pkg.c:746 [pkgconf_pkg_t *pkgconf_pkg_try_specific_path(pkgconf_client_t *, [...]*)]: trying path: /usr/local/lib/pkgconfig for libngtcp2_crypto_gnutls
dnl Rest of strings are for catching classic pkg-config lines.
trc=`CURL_EXPORT_PCDIR([$2]) dnl
trc=`CURL_EXPORT_PCDIR([$2])
if test -n "$PKG_CONFIG_LIBDIR"; then
echo "PKG_CONFIG_LIBDIR: '$PKG_CONFIG_LIBDIR'"
fi
if test -n "$PKG_CONFIG_PATH"; then
echo "PKG_CONFIG_PATH: '$PKG_CONFIG_PATH'"
fi
$PKGCONFIG --exists --debug $1 2>&1 | $EGREP '(trying path:|Adding directory|Looking for|Scanning directory|Cannot open directory)' | $SED 's/^.*trying path:/trying path:/'`
msg=`CURL_EXPORT_PCDIR([$2]) dnl
msg=`CURL_EXPORT_PCDIR([$2])
$PKGCONFIG --exists --print-errors $1 2>&1`
if test -n "$msg"; then
trc=`echo "$trc"; echo '==== error:'; echo "$msg"`